PROFILE

Dr. Mohan Singh Mehata (??. ???? ???? ?????) earned his Ph.D. from Kumaun University, Uttarakhand, and has held prestigious research positions and fellowships in the USA, Japan, China, and Taiwan, including JSPS (Japan), COE (Japan), Michigan Technological University, Chinese Academy of Sciences (CAS), and Carnegie Mellon University. He is a recipient of multiple honors, including the DST Young Scientist Fellowship, DTU’s annual Research Excellence Award (since 2018), and the Innovation Award. He has published over 140 papers, including three in Nature Publishing Group journals, and holds four granted patents.

He has supervised 10 Ph.D. and 40 Master’s students and has led major funded projects exceeding 2 crore from DST, DAE-BRNS, DST-RFBR, and SERB-DST. Dr. Mehata also serves on the MEXT Fellowship screening committee (Govt. of Japan) and as a jury member/reviewer for INSPIRE-MANAK (DST).

His research focuses on semiconductor and metal nanoparticles, quantum dots and 2D materials with applications in environmental sensing, photocatalysis and optoelectronic devices (including QLEDs).

PREVIOUS POSITIONS/ EXPERIENCE

Education and Post-Ph.D. Experience (India and Abroad)

Academic & Professional Positions

2025-
-----------

2022 – 2025

Associate Professor, Engineering Physics, Department of Applied Physics, Delhi Technological University (DTU), India

2010 – 2022
Assistant Professor, Engineering Physics, Department of Applied Physics, Delhi Technological University (DTU), India

2019 (Sept – Oct)
Visiting Professor, National Chiao Tung University, Taiwan

2015 (June – July)
Visiting Professor, Chinese Academy of Sciences (CAS), Government of China

2014 (May – July)
Visiting Professor, Chinese Academy of Sciences (CAS), Government of China

2009 – 2010
Post-Doctoral Fellow, Hokkaido University, Sapporo, Japan

2007 – 2009
JSPS Standard Post-Doctoral Fellow, Japan Society for the Promotion of Science (JSPS), Government of Japan

2007
Post-Doctoral Fellow, Research Institute for Electronic Science (RIES), Hokkaido University, Japan

2005 – 2007
Young Scientist (DST), Department of Physics, Kumaun University, Nainital, India

2004 – 2005
Research Scientist, Research Institute for Electronic Science (RIES), Hokkaido University, Japan

2004
Research Fellow, Michigan Technological University, Michigan, USA

2003 – 2004
Lecturer (Contractual), Kumaun University, Nainital, India

Education

Ph.D. in Physics (1995 – 2002)
Specialization: Fluorescence Spectroscopy
Thesis: “Ultrafast Fluorescence Spectroscopy of Some Molecular Systems”

M.Sc. in Physics (1992 – 1994)
Specialization: Electronics

B.Sc. in Physics, Chemistry, and Mathematics (1989 – 1992)
Recipient of Graduate Seemant Fellowship (1990–92), Govt. P.G. College, Pithoragarh, Uttarakhand

TEACHING (COURSES TAUGHT)

Teaching Profile

Undergraduate Level (B.Tech. – All Branches & Engineering Physics)

  • Physics (Physics-I and Physics-II)

  • Atomic and Molecular Physics

  • Laser and Instrumentation

Postgraduate Level (M.Tech. and M.Sc.)

  • Atomic and Molecular Physics

  • Lasers and Spectroscopy

  • Design and Synthesis of Materials

  • Physics of Nanomaterials

Doctoral Level (Ph.D.)

  • Physics of Nanomaterials

  • Design and Synthesis of Materials

Laboratories Created and Developed

  1. Laser Spectroscopy Laboratory (Ph.D., M.Sc./M.Tech.)

  2. Advanced Physics Laboratory–I (M.Sc.)

  3. Condensed Matter Physics Laboratory (B.Tech. Engineering Physics)

MEMBERSHIPS

Professional Affiliations

  • Member, American Chemical Society (ACS)
    Membership No.: 30715031 (2017–2022)

  • Life Fellow Member, Indian Science Congress Association (ISCA)
    Membership No.: L39263 (2019)

  • Life Fellow Member, Optical Society of India (OSI)
    Membership No.: L.839 (2018)

  • Life Member, National Laser Association, Centre for Advanced Technology (CAT), Indore
    Membership No.: LM-759 (2001)

  • Member, Vigyanik (Hindi Vigyan Sahitya Parishad), Bhabha Atomic Research Centre (BARC), Mumbai

  • Life Member, Indian Society for Radiation and Photochemical Sciences (ISRAPS)
    Membership No.: L-455 (2019)

  • Life Member, Laser and Spectroscopy Society of India (LASSI), Banaras Hindu University (BHU), Varanasi
    Membership No.: M.S. 439

  • Life Member, Indian JSPS Alumni Association (IJAA)

PUBLICATIONS

Papers in refereed journals

102. Mehata, M.S*, Sharma, V., Tandon, A., Aybush, A., Gostev, F., Nadtochenko, V.

Micro- to femtosecond exciton dynamics of light-emitting metal incorporated zinc-selenide (ZnSe) quantum dots for possible white QLEDs.

Materials Research Bulletin, Submitted (2025). ISI Impact Factor=5.70

101. Aneesha, Mehata M. S.*

Reusable fluorescent WS2 QDs sensor for ultralow-level detection of Cr6+ in real water samples.

Materials Today Communications, 49 (2025) 114183. ISI Impact Factor = 4.50

100. Bhatt N., Mehata M.S.*

WSe2 Quantum Dots: A Fluorescent probe for ultra-sensitive detection of explosive 2,4,6-trinitrophenol.

Materials Research Bulletin, 192 (2025) 113633. ISI Impact Factor = 5.70.

99. Sharma V., Kumar D., Mehata M. S.*

Advancing photocatalytic efficiency of Mn2+-doped ZnSe nanoparticles for sustainable water treatment: removal of toxic organic pollutants.

Materials Science & Engineering, B 321 (2025) 118542. ISI Impact Factor=4.60.

98. Aneesha, Mehata M.S.*

Waterborne explosives: A rapid detection method using MoSe2 quantum dots.

Materials Research Bulletin, 185 (2025) 113287. ISI Impact Factor = 5.70.

97. Isha, Aneesha, Mehata M. S.*

Synthesis of graphene quantum dots (GQDs) from paddy straw for bilirubin detection.

Plasmonics (correspondence), 20 (2025) 2359-2366. ISI Impact Factor = 3.30

96. Husain S., Pandey N., Fatma N., Pant S., Mehata, M. S.*.

Quantum computational and spectroscopic investigation of 3-aminosalicylic acid.

Journal of Fluorescence, 35 (2025) 4111–4128. ISI Impact Factor=3.10.

95. Mehata M. S.*, Aneesha

Selectively probing ferric ions in aqueous environments using protonated and neutral forms of 7-azaindole as a multiparametric chemosensor. 

Photochemical & Photobiological Sciences 22 (2023) 1505-1516. ISI Impact Factor = 3.4.

94. Shukla S., Mehata M. S.*

Selective picomolar detection of carcinogenic chromium ions using silver nanoparticles capped via biomolecules from flowers of Plumeria obtuse.

Journal of Molecular Liquids 380 (2023) 121705. ISI Impact Factor = 6.633.

93. Aneesha, Ohta N., Mehata M. S.*

In situ synthesis of WS2 QDs for sensing of H2O2: Quenching and recovery of absorption and photoluminescence.

Materials Today Communications 34 (2023) 105013. ISI Impact Factor = 4.50.

92. Bhatt N., Mehata M. S.*

A sustainable approach to develop gold nanoparticles with Kalanchoe fedtschenkoi and their interaction with protein and dye: Sensing and catalytic probe.

Plasmonics 18 (2023) 845–858. ISI Impact Factor = 3.0.

91. Fatima N., Pant S., Pandey N., Mehata M.S.*

Excited-state properties of 6-methoxyflavone in the presence of halide ions in aqueous media

Methods and Applications in Fluorescence 11 (2023) 045002. ISI Impact Factor = 3.849.

90. Meena V.S., Saini A.K., Singh A., Jain S., Singh R., Mehata, M. S.*

Structural, compositional, morphological and electrical characteristics of thermally evaporated Au Ohmic Contact on p-type HgCdTe substrate for possible infrared detectors.

Optical Materials 141 (2023) 113943. ISI Impact Factor=3.90.

89. Meena V.S., Saini A.K., Singh A., Jain S., Rana D.K., Mehata, M. S.*

Design and development of four-layer anti-reflection coating stacks (ZnS and YF3 thin films) for HgCdTe-based mid-wave infrared detectors.

Materials Science in Semiconductor Processing 163 (2023) 107556. ISI Impact Factor = 4.644.

88. Pandey, N., Pant S., Mehata M. S.*,

Effect of halide ions on the fluorescence properties of 3-aminoquinoline in aqueous medium.

Luminescence 38 (2023) 1192-1198. ISI Impact Factor 2.90

87. Husain S., Pandey N., Fatma N., Pant S., Mehata, M. S.*,

Spectral characteristics of 3, 5-diaminobenzoic acid in pure and mixed solvents: Experimental and theoretical study

Journal of Molecular Liquids 368 (2022) 120783. ISI Impact Factor = 6.633.

86. Meena V.S., Mehata M. S.*

Thermally grown indium (In) thin-film for creating Ohmic contact and In-bumps for HgCdTe-based IR detectors.

Applied Surface Sciences 596 (2022) 153501. ISI Impact Factor=7.392.

85. Fatma N., Pant S., Mehata M. S.*,

Reinvestigation on photoluminescence of 7-hydroxyflavone in aqueous medium: Proficient fluorescence enhancement.

Journal of Photochemistry & Photobiology A: Chemistry 431 (2022) 114014. ISI Impact Factor 5.141.

84. Ruby, Aryan, Mehata M. S.*

Surface plasmon resonance allied applications of silver nanoflowers synthesized from Breynia vitisidaea leaf extract.

Dalton Transactions 51 (2022) 2726 - 2736. ISI Impact Factor=4.569.

83. Bhatt, P, Pant, C.K., Pandey, P, Pandey, Y., Sati, S.C., Mehata, M. S.

Adsorption of cytosine on prebiotic siliceous clay surface induced with metal dications: Relevance to origin of life

Materials Chemistry and Physics, 291 (2022) 126720. ISI Impact Factor=4.778.

82. Kumar D., Singh M.K., Mehata M. S.*

Exploration of grown cobalt-doped zinc oxide nanoparticles and photodegradation of industrial dye.

Materials Research Bulletin 150 (2022) 111795. ISI Impact Factor=5.60.

81. Bisht B., Dey P., Singh A.K., Pant S., Mehata, M.S.*

Spectroscopic Investigation on the Interaction of Direct Yellow-27 with Protein (BSA).

Methods and Applications in Fluorescence 10 (2022) 044009. ISI Impact Factor = 3.849.

80. Shukla S. Masih A., Aryan, Mehata M. S.*

Catalytic activity of silver nanoparticles synthesized using Crinum asiaticum (Sudarshan) leaf extract.

Materials Today: Proceedings 56 (2022) 3714–3720.

79. Meena V.S., Saini A.K., Rana D.K., Mehata M. S.*

Synthesis and characterization of thermally-evaporated CdS thin-films.

Materials Today: Proceedings 67 (2022) 643–647.

78. Kumar D., Mehata M. S.*

Synthesis of diamagnetic ZnO nano-crystallites via sol-gel method and their photocatalytic activity.

Indian Journal of Engineering & Materials Sciences 29 (2022) 437-444. ISI Impact Factor=0.881.

77. Sharma V., Mehata M. S.*

A parallel investigation of un-doped and manganese ion-doped zinc selenide quantum dots at cryogenic temperature and application as an optical temperature sensor

Materials Chemistry and Physics, 276 (2022) 125349. ISI Impact Factor=4.778.

76. Sharma P., Singh M.K., Mehata M. S.*

Sunlight-driven MoS2 nanosheets mediated degradation of dye (crystal violet) for wastewater treatment.

Journal of Molecular Structure, 1249 (2022) 131651. ISI Impact Factor = 3.841.

75. Sharma V., Mehata M. S.*

Photoluminescence turn-off based dual analytes (Hg2+ and Pb2+) sensor in aqueous medium using 3-marcaptoproponic acid protected Mn2+ doped ZnSe quantum dots.

Chemical Physics Letters 787 (2022) 13927. ISI Impact Factor=3.10.

74. Pandey N., Tiwari N., Pant S., Mehata M. S.*

Solvatochromism and estimation of ground and excited state dipole moments of 6-aminoquinoline.

 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 267 (2022) 12049. ISI Impact Factor = 4.831.

73. Mehata M. S.*, Singh, M.K., Rana, S., Awasthi, K. Sharma, P., Ohta, N.,

Temperature-dependent absorption and electro-absorption of 2D-molybdenum disulfide (MoS2) thin films.

Journal of Physical Chemistry C, 125 (2021) 26566−26574. ISI Impact Factor=4.177.

72. Mehata M. S.*

An efficient excited-state proton transfer fluorescence quenching based probe (7-hydroxyquinoline) for sensing trivalent cations in aqueous environment.

Journal of Molecular Liquids 326 (2021) 115379. ISI Impact Factor=6.633.

71. Mehata M. S.*

Green route synthesis of silver nanoparticles using plants/ginger extracts with enhanced surface plasmon resonance and degradation of textile dye.

Materials Science & Engineering B 273 (2021) 115418. ISI Impact Factor=4.05.

70. Mehata M. S.*, Biswas S.

Synthesis of fluorescent graphene quantum dots from graphene oxide and their application in fabrication of GQDs@AgNPs nanohybrids and sensing of H2O2.

Ceramics International 47 (2021) 19063–19072. ISI Impact Factor=5.532.

69. Singh M.K., Mehata M. S.*

Temperature-dependent photoluminescence and decay times of different phases of grown TiO2 nanoparticles: Carrier dynamics and trap states.

Ceramics International, 47 (2021) 32534-32544. ISI Impact Factor=5.532.

68. Pandey N., Mehata M. S.*, Pant S., Tewari N.

Structural, electronic and NLO properties of 6-aminoquinoline: A DFT/ TD?DFT study.

Journal of Fluorescence, 31 (2021) 1719-1729. ISI Impact Factor=2.525.

67. Sharma V., Mehata M. S.*

Synthesis of photoactivated highly fluorescent Mn2+-doped ZnSe quantum dots as effective lead sensor in drinking water.

Materials Research Bulletin 134 (2021) 111121. ISI Impact Factor=5.60.

66. Sharma, V., Mehata, M. S.*

Rapid optical sensor for recognition of explosive 2,4,6-TNP traces in water through fluorescent ZnSe quantum dots.

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 260 (2021) 119937. ISI Impact Factor=4.831.

65. Meena, V.S., Mehata, M. S.*

Investigation of grown ZnS film on HgCdTe substrate for passivation of infrared photodetector.

Thin Solid Films, 731 (2021) 138751. ISI Impact Factor=2.358.

64. Aryan, Ruby, Mehata, M.S.*

Green synthesis of silver nanoparticles using Kalanchoe pinnata leaves (life plant) and their antibacterial and photocatalytic activities.

Chemical Physics Letters, 778 (2021) 138760. ISI Impact Factor=3.10.

63. Pandey, N., Mehata, M. S.*, Pant, S.

Interaction between picric acid and 5-aminoquinoline: A theoretical study,

Journal of Atomic, Molecular, Condensed Matter & Nano Physics, 8 (2021) 63–69.

62. Fatma, N., Mehata, M. S.*, Pandey, N., Pant, S.

Experimental and theoretical interpretations of spectral behavior of 6-methoxyflavone.

Journal of Photochemistry & Photobiology A: Chemistry 404 (2021) 112945. ISI Impact Factor= 5.141.

61. Husain, S., Mehata, M. S.*, Pandey, N., Mishra, H., Pant, S.

Reinvestigation of the photophysics of 3-aminobenzoic acid in neat and mixed binary solvents.

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 247 (2021) 119100. ISI Impact Factor = 4.19.

60. Adhikari, M., Joshi, N.K., Joshi, H. C., Mehata, M. S., Mishra, H., Pant, S.

Revisiting the photochemistry 2,5-dihydroxy benzoic acid (gentisic acid): Solvent and pH effect.

Journal of Physical Organic Chemistry 34 (2021) e4168, ISI Impact Factor=2.39.

59. Sharma, P., Mehata, M. S.*

Rapid sensing of lead metal ions in an aqueous medium by MoS2 quantum dots fluorescence turn-of.

Materials Research Bulletin 131 (2020) 110978. ISI Impact Factor=5.60. Citation Nos. 02.

58. Singh, M.K., Mehata, M. S.*

Enhanced photoinduced catalytic activity of transition metal ions incorporated TiO2 nanoparticles for degradation of organic dye: Absorption and photoluminescence spectroscopy.

Optical Materials 109 (2020) 110309. ISI Impact Factor=3.754.

57. Pandey, N., Mehata, M. S.*, Fatma, N., Pant, S.

Modulation of Fluorescence properties of 5-aminoquinoline by Ag+ in aqueous media via charge transfer.

Journal of Photochemistry & Photobiology A: Chemistry 396 (2020) 112549. ISI Impact Factor= 5.141. Citation Nos. 01.

56. Sharma, P., Mehata, M. S.*

Colloidal MoS2 quantum dots based optical sensor for detection of 2,4,6-TNP explosive in an aqueous medium.

Optical Materials 100 (2020) 109646. ISI Impact Factor=3.754. Citation Nos. 02.

55. Fatma, N., Mehata, M. S.*, Pandey, N., Pant, S.

Flavones fluorescence-based dual response chemosensor for metal ions in aqueous media and fluorescence recovery.

Journal of Fluorescence, 30 (2020) 759-772. ISI Impact Factor=2.22. Citation Nos. 01.

54. AnchorRashmiAnchor, MotloungAnchor S.V., AnchorMehata, M.S., Dwivedi, Y.

Bright red emission from doubly doped YAG:Pr/Sm nanophosphor and color modulation.

Optical Materials, 107 (2020) 110106. ISI Impact Factor=3.754.

53. Mehata, M. S.*, Ratnesh, R.K.,

Luminescent properties and exciton dynamics of core-multi-shell semiconductor quantum dots leading to QLEDs.

Dalton Transactions, 48 (2019) 7619–7631. ISI Impact Factor = 4.569. Citation Nos. 07.

Selected as HOT article/ featured article of the Journal (2019).

52. Singh, M.K., Mehata, M. S.*

Phase-dependent optical and photocatalytic performance of synthesized titanium dioxide (TiO2) nanoparticles.

Optik, 193 (2019) 163011. ISI Impact Factor = 2.840. Citation Nos. 10.

51. Nandan, Y., Mehata, M. S.*

Wavefunction engineering of type-I/type-II excitons of CdSe/CdS core-shell quantum dots.

Scientific Reports, 9 (2019) 2 (Nature Publishing Group.). ISI Impact Factor = 4.996. Citation Nos. 57.

The article is in the 9th position of Top 100 Scientific Reports (NPG) Materials Science papers in 2019.

50. Pandey, N., Mehata, M.S.*, Fatma, N., Pant, S.

Efficient fluorescence quenching of 5-aminoquinoline: Silver ion recognition study.

Journal of Luminescence 205 (2019) 475-481. ISI Impact Factor=3.60. Citation Nos. 05.

49. Kumari, K. Tiwari, N., Mehata, M.S., Pandey, N., Tiwari, K., Ratnesh, R.K., Joshi, H., Pant, S.

Steady state and time-resolved fluorescence study of 7, 8-benzoquinoline: Reinvestigation of excited state protonation.

Journal of Molecular Structure, 1180 (2019) 855-860. ISI Impact Factor = 3.20. Citation Nos. 03.

48. Mehata, M.S.*

Spectral and time-resolved properties of photoinduced hydorxyquinolines doped thin polymer films.

Optical Materials 75 (2018) 751-756. ISI Impact Factor=3.754. Citation Nos. 04.

47. Ratnesh, R.K., Mehata, M.S.*

Tunable single and double emission semiconductor nanocrystal quantum dots: A multianalyte sensor.

Methods and Applications in Fluorescence 6 (2018) 035006. ISI Impact Factor = 3.849. Citation Nos. 02.

46. Gosteva, F. E., Shelaeva, I. V., Aibusha, A. V., Kostrova, A. N., Titova, A. A., Kochevb, S.Yu., Kabachiib, Yu. A., Mehata, M.S., Nadtochenko V. A.

Relaxation kinetics of excitonic states in ZnSe quantum dots: A femtosecond laser spectroscopy study.

High Energy Chemistry, 52 (2018)283–288, ISI Impact Factor = 0.842.

45. Yadav, O., Varshney, A., Ratnesh, R.K, Mehata, M.S., Kumar, A.

A2B Corroles: Fluorescence signaling systems for sensing fluoride Ions.

Spectrochimica Acta A: Molecular and Biomolecular Spectroscopy 202 (2018) 207-213. ISI Impact Factor = 4.831. Citation Nos. 04.

44. Jha S.K. Kumari R., Choudhary S., Guha P., Satyam P.V., Yadav B.S., Naqvi Z., Kushvaha S.S., Ratnesh R.K., Mehata, M.S., Jain, A., Panwar, A.K., Singh,F, Tyagi, P.K.

Facile synthesis of semiconducting ultrathin layer of molybdenum disulfide.

Journal of Nanoscience and Nanotechnology 18 (2018) 614-622, I.F. = 1.35. Citation Nos. 03.

43. Jain S., Mehata, M. S.*

Medicinal plant leaf extract and pure flavonoid mediated green synthesis of silver nanoparticles and their enhanced antibacterial property.

Scientific Reports 7 (2017) 15867 (www.nature.com). ISI Impact Factor= 4.996. Citation Nos. 420.

The article is in the Top 100 Scientific Reports (Nature Publishing Group) Chemistry papers in 2017.

42. Mehata M.S.*, Yang, Y., Han, K.L.

Probing charge transfer and short-lived triplet states of a bio-sensitive molecule, 2,6-ANS: Transient absorption and time-resolved spectroscopy.

ACS Omega 2 (2017) 6782-6785. ISI Impact Factor =4.132. Citation Nos. 02.

41. Ratnesh R. K., Mehata M. S.*

Investigation of biocompatible and protein sensitive highly luminescent quantum dots/nanocrystals of CdSe, CdSe/ZnS and CdSe/CdS.

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 179 (2017) 201–210. ISI Impact Factor = 4.831. Citation Nos. 23.

The article selected and appeared in the cover page of the volume of the Journal.

40. Mehata, M.S.*, Singh, A.K., Sinha, R.K.

Investigation of charge-separation/change in dipole moment of 7-azaindole: Quantitative measurement using solvatochromic shifts and computational approaches.

Journal of Molecular Liquids 231 (2017) 39–44. ISI Impact Factor = 6.633. Citation Nos. 10.

39. Ratnesh R.K., Mehata M. S.*

Synthesis and Optical Properties of Core-Multi-Shell CdSe/CdS/ZnS Quantum Dots: Surface modifications.

Optical Materials 64 (2017) 250-256. ISI Impact Factor = 3.754. Citation Nos. 28.

38. Mehata M. S.*, Singh, A.K., Sinha, R.K.

Experimental and theoretical study of hydroxyquinolines: Hydroxyl group position dependent dipole moment and charge-separation in the photoexcited state leading to    fluorescence.

Methods and Applications in Fluorescence 4 (2016) 045004. ISI Impact Factor = 3.849. Citation Nos. 05.

The article is selected for the highlights of 2016.

37. Sharma R.K., Gajanan L.K., Mehata M. S.*, Hussain F., Kumar A.

Synthesis, characterization and fluorescence turn-on behavior of new porphyrin analogue: meta-benziporphodimethenes.

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 169 (2016) 58–65.   ISI Impact Factor = 4.831. Citation Nos. 05.

36. Sharma R.K., Gajanan L.K., Mehata M. S.*, Hussain F., Kumar A.

meta-Benziporphodimethenes: New cell-imaging porphyrin analogue molecules.

ChemistrySelect 1 (2016) 3502-3509 (Wiley-VCH). ISI Impact Factor = 2.307. Citation Nos. 03.

35. Verma A., Mehata, M. S.*

Controllable synthesis of silver nanoparticles using Neem leaves and their antimicrobial activity.

Journal of Radiation Research and Applied Science 9 (2016) 109-115. ISI Impact Factor = 2.96. Citation Nos. 325.

The article is among the most downloaded articles of the journal.

34. Mehata, M.S.*

Enhancement of charge transfer and quenching of photoluminescence of capped CdS Quantum Dots.

Scientific Reports 5 (2015) 12056 (www.nature.com). ISI Impact Factor = 4.996. Citation Nos. 32.

33. Mehata, M.S., Yang, Y., Qu, Z.J., Chen, J.S., Zhao, F.J. Han, K.L.

Spin mixed charge transfer states of iridium complex Ir(ppy)3: Probed by transient absorption and time-resolved photoluminescence. (Correction).

RSC Advances 5 (2015) 75210.

32.  Ratnesh, R.K., Mehata, M. S.*

Controlled synthesis and optical properties of tunable CdSe quantum dots and effect of pH.

AIP Advances 5 (2015) 097114. ISI Impact Factor = 1.697, Citation Nos. 21.

31. Mehata, M.S.*, Yang, Y., Qu, Z.J., Chen, J.S., Zhao, F.J. Han, K.L.

Spin mixed charge transfer states of iridium complex Ir(ppy)3: Probed by transient absorption and time-resolved photoluminescence.

RSC Advances (Communication), 5 (2015) 34094-34099. ISI Impact Factor = 4.036. Citation Nos. 19.

30. Pandey P., Pant C.K., Gururani K., Arora P., Pandey N., Bhatt, P., Sharma, Y., Negi, J.S. Mehata, M.S.

Affinity of Smectite and Divalent Metal Ions (Mg2+, Ca2+, Cu2+) with L-Leucine: An Experimental and Theoretical Approach Relevant to Astrobiology.

Origins of Life and Evolution of Biospheres 45 (2015) 411–426. ISI Impact Factor = 1.95. Citation Nos. 02.

29. Chug, S., Tiwari, J.P., Mehta, M. S., Chand, S.

Analysis of Device Parameter of PEDOT: PSS and MoO3 based conventional organic solar cells.

International Journal of Applied Engineering Research  9 (2014) 941-947.

28. Liu, Y.H., Mehata, M. S., Lan, S.C.

TDDFT Study of the Polarity Controlled Ion-Pair Separation in an Excited-State Proton Transfer Reaction.

Spectrochimica Acta A: Molecular and Biomolecular Spectroscopy 128 (2014) 280-284 (Elsevier Sci.). ISI Impact Factor = 4.831. Citation Nos. 41.

27. Pandey P., Pant C.K., Gururani K., Arora P., Kumar S., Sharma Y., Pathak H.D., Mehata, M. S.

Surface Interaction of L-alanine on Hematite: An Astrobiological Implication.

Origins of Life and Evolution of Biospheres, 43 (2013) 331-339. (Springer). ISI Impact Factor = 1.95. Citation Nos. 08.

26. Mehata M.S., Hsu C.H., Lee Y.P., Ohta, N.:

Electroabsorption and electrophotoluminescence of poly(2,3-diphenyl-5-hexylphenylene vinylene).

Journal of Physical Chemistry C, 116 (2012) 14789-14795 (Am. Chem. Soc). ISI Impact           Factor = 4.81. Citation Nos. 11.

25. Mehata M. S.*

Stark Shifts and exciton dissociation in CdSe Nanoparticle grafted cconjugated polymer.

Applied Physics Letters, 100 (2012) 151908-151908-4. (American Institute of Physics). ISI Impact Factor = 3.971. Citation Nos. 14.

24. Mehata M.S.*, Ohta N.

Photo- and field-induced charge-separation and phosphorescence quenching in organometallic complex Ir(ppy)3.

Applied Physics Letters, 98 (2011) 181910-181910-3 (American Institute of Physics). ISI Impact Factor = 3.971. Citation Nos. 07.

The article is accepted as it (submitted) is by the Editorial board.

23. Liu Y.H., Mehata M.S., Liu J.Y.

Excited-state proton transfer via hydrogen-bonded acetic acid (AcOH) wire for 6-hydroxyquinoline.

Journal of Physical Chemistry A, 115 (2011)19-24 (Am. Chem. Soc.). ISI Impact Factor = 2.944. Citation Nos. 72.

22. Mehata, M. S., Majumder, M. Mallik, B, Ohta, N.

External electric field effects on optical property and excitation dynamics of capped CdS quantum dots (QDs) embedded in a polymer film.

Journal of Physical Chemistry C, 114 (37) (2010) 15594–15601 (Am. Chem. Soc.) ISI Impact Factor = 4.81. Citation Nos. 36.

21. Mehata, M.S., Hsu, C.H., Lee, Y.P., Ohta, N.

Electric field-induced enhancement/quenching of photoluminescence of p-conjugated polymer S3-PPV: Excitation energy dependence.

Journal of Physical Chemistry B, 114 (19) (2010) 6258-6265 (Am. Chem. Soc.) ISI Impact Factor = 3.466. Citation Nos. 17.

20. Mehata, M.S., Hsu, C.H., Lee, Y.P., Ohta, N.:

Electric field-induced enhancement/quenching of photoluminescence of p-conjugated polymer S3-PPV: Excitation energy dependence. (Corrections).

Journal of Physical Chemistry B, 114 (31) (2010) 10234 (Am. Chem. Soc.) ISI Impact Factor = 4.1.

19. Mehata, M.S., Hsu, C.H., Lee, Y.P., Ohta, N.

Electric field effects on photoluminescence of polyfluorene thin films: Dependence on excitation wavelength, field strength and temperature.

Journal of Physical Chemistry C, 113 (27) (2009) 11907-11915 (Am. Chem. Soc). ISI Impact Factor = 4.81. Citation Nos. 15.

18. Mehata, M.S., Awasthi, K. Iimori, T., Ohta, N.

Electric field effects on state energy and molecular orientation of 2-hydroxyquinoline in solid polymer films.

Journal of Photochemistry and Photobiology A, 204 (2009) 39-45 (Elsevier Sci.). ISI Impact Factor = 5.141. Citation Nos. 11.

17. Pant, C.K., Hem Lata, Pathak, H.D., Mehata, M. S.*

Heat initiated prebiotic formation of peptides from glycine-aspartic acid and glycine-valine in aqueous environment and clay suspension.

International Journal of Astrobiology, 8 (2009) 107-115 (Cambridge Univ. Press). ISI Impact Factor = 1.72. Citation Nos. 13.

16. Mehata, M.S.*

Proton translocations and electronic relaxation along hydrogen-bonded molecular wire in a 6-hydroxyquinoline/Acetic acid complex.

Journal of Physical Chemistry B, 112 (28) (2008) 8383-8386 (Am. Chem. Soc.). ISI Impact Factor = 3.466. Citation Nos. 24.

15. Mehata, M. S., Iimori, T, Ohta, N.

Electric-field-induced changes in fluorescence decay and spectrum of tris(8-hydroxyquinoline) aluminum in a polymer film.

Chemical Physics Letters, 457 (2008) 62-65 (Elsevier Science Pub.) ISI Impact Factor = 3.10. Citation Nos. 10.

14. Mehata, M. S.*

Photoinduced excited state proton rearrangement of 6-hydroxyquinoline along a hydrogen-bonded AcOH wire.

Chemical Physics Letters, 436 (2007) 357-361 (Elsevier Sci. Pub.) ISI Impact Factor = 3.10. Citation Nos. 22.

13. Mehata, M. S., Iimori, T., Yoshizawa, T., Ohta, N.

Electroabsorption spectroscopy of 6-hydroxyquinoline doped in polymer films: Stark shifts and Orientational effects.

Journal of Physical Chemistry A, 110 (2006) 10985-10991 (Am. Chem. Soc.) ISI Impact Factor = 2.944. Citation Nos. 27.

The article is accepted as it is by the Editorial board of ACS journal (JPC A).

12. Mehata, M.S.*

Fluorescence characteristics of 2-hydroxyquinoline in various solvents.

Journal of Instrument Society of India, 35 (2005) 249-256 (IISc., Bangalore; IF = 0.2). Citation Nos. 04.

11. Mishra, H., Misra, V., Mehata, M. S., Pant, T.C., Tripathi, H.B.:

Fluorescence studies of salicylic acid doped polyvinyl alcohol film as a water/humidity sensor.

Journal of Physical Chemistry A, 108 (2004) 2346-2352 (Am. Chem. Soc.) ISI Impact Factor = 2.944. Citation Nos. 95.

10. Mehata, M.S.*, Joshi, H.C., Tripathi, H.B.:

Fluorescence characteristics of 6-hydroxyquinoline in Nafion polymer matrix.

Spectrochimica Acta A: Molecular and Biomolecular Spectroscopy, 59 (2003) 559-567 (Elsevier Sci.) ISI Impact Factor = 4.831. Citation Nos. 14.

9. Kalra, S., Pant, C.K., Pathak, H.D and Mehata, M. S.*

Studies on the adsorption of peptides of glycine/alanine on montmorillonite clay with or without co-ordinated divalent cations.

Colloids and Surfaces A, 212 (2003) 43-50 (Elsevier). ISI Impact Factor = 5.518. Citation Nos. 34.

8. Mehata, M.S.*, Joshi, H.C., Tripathi, H.B.:

Complexation of 6-hydroxyquinoline with trimethylamine in polar and non-polar solvents.

Chemical Physics Letters, 366 (2002) 628-635 (Elsevier Sci.) ISI Impact Factor IF = 3.10. Citation Nos. 17.

7. Mehata, M.S.*, Tripathi, H.B.:

Fluorescence quenching of 6-methoxyquinoline: An indicator for sensing chloride ion in aqueous media.

Journal of Luminescence, 99 (2002) 47-52. (Elsevier Sci.). ISI Impact Factor = 4.171. Citation Nos. 41.

6. Mehata, M. S.*, Joshi, H.C., Tripathi, H.B.:

Excited state intermolecular proton transfer reaction of 6-hydroxyquinoline in protic polar medium.

Chemical Physics Letters, 359 (2002) 314-320 (Elsevier Sci.) ISI Impact Factor = 3.10. Citation Nos. 41.

The reviewer of the Journal considers the published work as a Novel.

5. Mehata, M. S.*, Joshi, H.C., Tripathi, H.B.:

Steady state and time-resolved spectroscopic studies of 7-hydroxyquinoline in various polymeric matrices.

Spectrochimica Acta A, 58 (2002) 1589-1598. (Elsevier Sci.). ISI Impact Factor = 4.831. Citation Nos. 17.

The paper is nominated for Herald Thomas Award.

4. Mehata, M.S.*, Joshi, H.C., Tripathi, H.B.:

Edge excitation red shift and charge transfer study of 6-methoxyquinoline in polymer matrices.

Journal of Luminescence, 93 (2001) 275-280 (Elsevier Sci.). ISI Impact Factor = 4.171. Citation Nos. 16.

3. Mehata, M.S.*, Tripathi, H.B.:

Photophysics of 6-methoxyquinoline in Nafion polymer matrix.

Indian Journal of Physics, 75 (2001) 189-192 (Springer.) ISI Impact Factor = 1.95. Citation Nos. 07.

2. Kalra, S., Pant, C.K., Pathak, H. D. and Mehata, M. S.

Adsorption of glycine and alanine on montmorillonite with or without coordinated divalent cations.

Indian Journal of Biochemistry and Biophysics, 37 (2000) 341-346 (CSIR). ISI Impact Factor = 1.92. Citation Nos. 14.

1. Purohit, G., Joshi, G.C., Mehata, M. S., Tripathi, H.B.:

Spectroscopic study of 8-hydroxyquinoline in polymeric matrices.

Journal of Optics, 31 (2002) 1-7. (Springer). ISI Impact Factor = 2.38. Citation Nos. 05. 

 

BOOKS/BOOK CHAPTERS (IF ANY)

 

Book and Book Chapters

8. Singh V., Sharma R., Mehata M.S., A.K. Panwar, Mohan M.

Springer Proceedings in Physics as the Proceedings of the International Conference on Atomic, Molecular, Optical & Nano Physics with Applications. Book DOI: 10.1007/978-981-16-7691-8.

Springer Singapore, Edited Book, In press (2025).

7. Singh V., Sharma R., Mohan M., Mehata M.S., Razdan A.K.

Springer Proceedings in Physics as the Proceedings of the International Conference on Atomic, Molecular, Optical & Nano Physics with Applications. Book DOI: 10.1007/978-981-16-7691-8.

Springer Singapore, Edited Book, vol. 271, 2022. ISBN 978-981-16-7690-1.

Book Chapters

6. Ghosh D., Aneesha and Mehata M.S.*

A green approach for the synthesis of stable silver nanoparticles using Kalanchoe blossfeldiana and their characterization, V. Singh et al. (eds.), Proceedings of the international conference on atomic, molecular, materials, Nano and optical physics with applications, Springer Proceedings in Physics.

Springer Nature Singapore Pte Ltd., vol. (2024) Accepted.

5. Bhushan B., Ddhiya A., Yadav V.K., Sharma G. and Mehata M.S.*

Surfactant Free and Facile Synthesis of Cuboidal Shaped CuO Nanoparticles for Acetone Sensing, V. Singh et al. (eds.), Proceedings of the international conference on atomic, molecular, materials, Nano and optical physics with applications, Springer Proceedings in Physics.

Springer Nature Singapore Pte Ltd., vol. (2024) Accepted.

4. Gangwar, A., Mehata, M.S. (2024).

Investigating Efficiency of Glucose-Derived Graphene Quantum Dots in Photocatalysis. In: Krupanidhi, S.B., Sharma, A., Singh, A.K., Tuli, V. (eds) Recent Advances in Functional Materials and Devices. AFMD 2023. Springer Proceedings in Materials, vol 37. pp 275–288, Springer, Singapore. https://doi.org/10.1007/978-981-99-6766-7_25.

Springer Singapore, Edited Book, vol 37, 2023, pp.  ISBN 978-981-99-6765-0

3. Ruby, Aryan, and Mehata M.S.*

Green Synthesis of Silver Nanoparticles Using Abutilon theophrasti Leaves and their Photocatalytic Activity for Water Treatment, V. Singh et al. (eds.), Proceedings of the international conference on atomic, molecular, optical & nano physics with applications, Springer Proceedings in Physics 271. https://doi.org/10.1007/978-981-16-7691-8_6.

Springer Nature Singapore Pte Ltd., vol. 271, 2022, pp. 63-73 ISBN 978-981-16-7690-1.

2. Mehata M.S.*

Fluorescence: Fundamentals and Applications; Foundations in Photonics and Fiber-Optics Applications. Ed. T.K. Gangopdhay, P. Kumbhakar, M.K. Mandal.

CRC Press, Taylor and Francis Group, (October 11, 2019). pp. 157-176. ISBN 9780367134570.

1. Purohit G., Joshi G.C., Mehata M.S., Tripathi H.B.

Second-order nonlinear optical properties of 8-hydorxyquinoline in crystalline form and polymeric matrix.

Proc. ICLMD, Eds. Mallik, A. and Dayal, R.R. (New Allied Pub. Ltd.) (1999) 161-164. ISBN-817023-993- 1.   

PATENTS (IF ANY)

Technology Transferred/Patents

 Mehata M.S.*, Sharma, V., Tandon, A. (2024):

Title: Light-emitting metal and dual metal-doped zinc selenide quantum dots and method thereof.

Indian Patent No. 531913, Date of Grant:  05.04.2024.

Indian Patent Application No.: 201911052787; Date of filing: 19.12.2019; Date of Publication: 27.12.2019.

Mehata M.S.* (2024): Apparatus and method for detecting electric field modulated absorption and photoluminescence of a sample.

     Indian Patent No. 529469, Date of Grant:  21.03.2024.

Indian Patent Application No.: 202111006180; Date of filing: 12.02.2021; Date of publication: 19.02.2021.

Mehata M.S.* (2023):  System and method for detecting trivalent metal ions.

Indian Patent No. 463021, Date of Grant:  27.10.2023.

Application No.: 202011055098; Date of filing 18.12.2020; Date of publication: 01.01.2021.

Mehata M.S.* and Aneesha (2023): Probe for the detection of ferric ions in aqueous environments and method thereof.

     Indian Patent No. 481999, Date of Grant:  13.12.2023.

Indian Patent Application No.: 202211013803; Date of filing: 14.03.2022; Date of publication: 25.03.2022.

HONOURS AND AWARDS (IF ANY)

Honors, Awards and Recognitions

International & National Awards

  • Innovation Research Award, Delhi Technological University, India (2024 and 2025)

  • Cumulative Citation Award (Silver), Delhi Technological University, India (2024)

  • Research Excellence Award (Commendable Research Award), Delhi Technological University (2018, 2019, 2020, 2021, 2022, 2023 and 2025)

  • Research Excellence Award (Early Research Impact and Influence Award), Delhi Technological University (2023, 2024 and 2025)

  • Featured in the Top 2% Scientists (World Ranking) listed by Stanford University/Elsevier (2023, 2024)

  • Young Scientist Award, UCOST, Government of Uttarakhand, India (17 Nov 2007)

  • Young Scientist Fellow, DST (Department of Science and Technology, Government of India) (2004)

International Research Fellowships & Postdoctoral Positions

  • Postdoctoral Research Associate, Carnegie Mellon University, USA (2010)

  • JSPS Postdoctoral Fellow, Japan Society for the Promotion of Science (2007–2009)

  • JST Postdoctoral Fellow, RIES, Hokkaido University, Japan (June 2007)

  • Postdoctoral Fellow, RIES, Hokkaido University, Japan (Dec 2009)

  • COE (Center of Excellence) Research Scientist, Hokkaido University, Japan (Nov 2004)

  • Research Fellow, Michigan Technological University (MTU), USA (Jan 2004)

Visiting Appointments

  • Visiting Professor, National Chiao Tung University, Department of Applied Chemistry & Institute of Molecular Science, Hsinchu, Taiwan (Sept–Oct 2019)

  • Visitor, N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia (1–15 Sept 2018)

  • Visiting Scholar/Professor, Chinese Academy of Sciences (CAS), Government of China (2014, 2015)

Editorial and Professional Roles

  • Editorial Advisory Board Member, Current Green Chemistry, Bentham Science (since 2018)

  • Editorial Board Member, International Journal of Science and Engineering Applications (IJSEA)

  • Editorial Board Member, SOP Transactions on Nano-Technology, Scientific Online Publishing

  • Board Member, International Association of Scientific Innovation and Research (IASIR), USA

  • Outstanding Reviewer, Materials Chemistry and Physics, Elsevier (2018)

Additional Distinctions

  • Nominated for the Herald Thomas Award (Mehata et al., Spectrochimica Acta A, 2002, 58, 1589)

  • Graduate Seemant Fellowship (B.Sc.), P.G. College, Pithoragarh (1990)

  • National Cadet Corps ‘B’ Certificate

  • SERB Qualified Unique Identification Document (SQUID): SQUID-1970-MM-3880, Science and Engineering Research Board, DST, Government of India

SPONSORED/CONSULTANCY PROJECTS

Completed / Ongoing Research Projects

Principal Investigator (PI) Projects

  1. FIRP–DTU Project (PI)
    Title: Biogenic nanoparticles: A green approach to solving environmental and health challenges
    Funding: 10,00,000
    Duration: 2025–2027
    Institution: Department of Applied Physics, Delhi Technological University, Delhi.

  2. SERB–DST Project (PI)
    Title: Photoinduced charge transfer dynamics of quantum dots/molecules under the influence of external perturbation
    Funding: 62,17,134
    Duration: 2017–2021
    Institution: Department of Applied Physics, Delhi Technological University, Delhi.

  3. DST–RFBR Indo-Russian Joint Research Project (PI)
    Title: Ultrafast dynamics of excitons and charge carriers in white-light-emitting quantum dots produced at low temperature
    Funding: 19,75,200
    Duration: 2017–2019
    Institution: Department of Applied Physics, Delhi Technological University, Delhi.

  4. DAE–BRNS Project (PI)
    Title: External electric field effect on the photoinduced charge transfer dynamics
    Funding: 17,50,250
    Duration: 2012–2016
    Institution: Department of Applied Physics, Delhi Technological University, Delhi, India.

  5. JSPS Project (PI)
    Title: Photoexcitation dynamics and molecular motion in the presence of external electric fields
    Funding: ¥30.0 Lakh
    Duration: 2007–2009
    Institution: Research Institute for Electronic Science (RIES), Hokkaido University, Japan.

  6. DST Project (PI)
    Title: Study of photoinduced excited-state dynamics in hydrogen-bonded fluorophores with applications in optical sensing, lasing action, and second-harmonic generation
    Funding: 12,44,064
    Duration: 2004–2007
    Institution: Department of Physics, Kumaun University, Nainital, India.

Projects with Coordination / Active Role

  1. DST–FIST Project (Coordinator)
    Objective: Support for Fluorescence Spectroscopy facilities
    Funding: 1.53 Crore
    Duration: 2012–2017
    Institution: Department of Applied Physics, Delhi Technological University, Delhi.

  2. UGC–SAP Programme (III Phase)
    Role: Active contributor to strengthening the Photophysics Laboratory and the Department
    Funding: 33 + 20 Lakhs and 05 + 05 JRF positions
    Duration: 2004–onwards
    Institution: Department of Physics, Kumaun University, Nainital.

  3. DST–FIST Project (Kumaun University)
    Role: Active contributor
    Funding: 33 Lakh
    Duration: 2003–2008
    Institution: Department of Physics, Kumaun University, Nainital.

START-UPS (IF ANY)

MOOC COURSES DEVELOPED (IF ANY)

PROFESSIONAL DEVELOPMENT

National-Level Responsibilities

  • Expert Reviewer, INSPIRE Awards–MANAK (National Level) 2020–21, 2021–22, 2022–23, 2023–24

  • Member, Selection Committee for National Award for Innovation in Educational Administration, Directorate of Education, New Delhi, Oct 20, 2016; Sept 15, 2017

  • Member, Selection Committee, Japanese Government (MEXT) Fellowship for Ph.D. and MS, 2018–2023

  • Expert (Physics, Material Science & Nanotechnology), 15th & 16th Uttarakhand State Science & Technology Congress, June 22–24, 2022

  • Sector Officer, Municipal Corporation of Delhi (MCD) Elections — March 2012

  • Member, Quick Response Team (QRT), Delhi Assembly Elections — 2013

  • External Flying Squad, Kumaun University Examinations — 2003

  • NSS Certificate Holder

University-Level Responsibilities (Delhi Technological University)

  • Coordinator (Consultancy), Research & Development Cell (R&D) — Feb 2025–present

  • Member, Vinod Dham Center of Excellence for Semiconductors and Microelectronics — Sep 2023–present

  • Member, Departmental Research Committee (DRC), Vinod Dham Center — Oct 2023–present

  • Member, Board of Studies (BOS), Applied Physics — 2019–2024

  • Member, Physical Verification Committee, DTU Library System — 2019

  • Member, Overall Coordination Committee for Orientation-cum-Induction Programme for 1st Semester UG students — 2019

  • Participant (Silver Medal), Annual Sports Conclave, DTU — Nov 11–13, 2022

  • Member, Core Committee, Desh Ke Mentor Conclave (DCPCR & DTU) — May 11, 2023

  • Departmental Representative, DTU Innovation & Startup Policy — June 10, 2023

  • IPR Expert, Dean IRD Office, DTU

  • Deputy Chairperson, Patent Evaluation Committee and Member, IPR Standing Committee — 2019–2020

ADVISEES

ANY OTHER INFORMATION