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Shri Mata Vaishno Devi University

Nanotechnology Cell

(Approved by UGC under Section 2(F) & Section 12(B) of UGC Act of 1956)


© 2015 with      Team Nanotechnology Cell, Shri Mata Vaishno Devi University, Kakryal,

Katra-182320 (J&K), India Phone: +91 1991 285699 extn. 2509;  

Fax: +91 1991 285694 Email: nanocell@smvdu.ac.in   

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     Information Brochure

Dr. Vinay Kumar

Coordinator, Nanotechnology Cell  

 Department of Physics

Shri Mata Vaishno Devi University

 

Area of research: solid-state lighting, wLED’s, latent finger print development, CRT phosphors, material modification using swift heavy ion irradiation; radiation dosimetry.

Research Projects (s) : 3 (Three)

Publication (s)



1.       Thermoluminescence studies of CaS: Bi nanocrystalline phosphors
V Kumar, R Kumar, SP Lochab, N Singh Journal of Physics D: Applied Physics 39 (24), 5137 (2006)

2.  Synthesis and characterization of bismuth doped calcium sulfide nanocrystallites V Kumar, N Singh, R Kumar, SP Lochab
Journal of Physics: Condensed Matter 18 (22), 5029 (2006)

3.    Thermoluminescence and dosimetric properties of bismuth doped CaS nanocrystalline phosphorV Kumar, R Kumar, SP Lochab, N Singh
Radiation Effects & Defects in Solids 161 (8), 479-485 (2006)

4.      Effect of swift heavy ion irradiation on nanocrystalline CaS: Bi phosphors: Structural, optical and luminescence studies
V Kumar, R Kumar, SP Lochab, N SinghNuclear Instruments and Methods in Physics Research Section B, 262 (2) 194 2007

5. Swift heavy ion induced structural modification and photo-luminescence in CaS: Bi nanophosphors, V Kumar, R Kumar, SP Lochab, N Singh, Journal of Nanoparticle Research 9 (4), 661-667 (2007).

6. Thermoluminescence response of CaS: Bi 3+ nanophosphor exposed to 200MeV Ag+15 ion beamV Kumar, HC Swart, OM Ntwaeaborwa, R Kumar, SP Lochab, V Mishra,Optical materials 32 (1), 164-168 (2009)

7. Peculiar feature of KCl+ SbCl3 phosphors: PL and XRD studies
A Saxena, DNS Srivastwa, S Sharma, S Thakur, V Kumar,
Journal of Modern Optics 56 (17), 1880-1884 2009

8. Ex situ synthesis and optical properties of ZnO–PbS nanocomposites
OM Ntwaeaborwa, RE Kroon, V Kumar, T Dubroca, J-P Ahn, J-K Park, HC Swart, Journal of Physics and Chemistry of Solids 70 (11), 1438-1442 (2009)

9. Surface chemical reactions during electron beam irradiation of nanocrystalline CaS: Ce3+ phosphorVinay Kumar, Varun Mishra, Shreyas S Pitale, IM Nagpure, E Coetsee, OM Ntwaeaborwa, JJ Terblans, HC Swart, Journal of Applied Physics 107 (12), 123533 (2010)

10. Combustion synthesis and luminescence investigation of Na3Al2 (PO4)3: RE (RE= Ce3+, Eu3+ and Mn2+) phosphorIM Nagpure, KN Shinde, Vinay Kumar, OM Ntwaeaborwa, SJ Dhoble, HC Swart, Journal of Alloys and Compounds 492 (1-2), 384-388 (2010)

11. Luminescence investigations of Ce3+ doped CaS nanophosphors
V Kumar, SS Pitale, V Mishra, IM Nagpure, MM Biggs, OM Ntwaeaborwa, ...
Journal of Alloys and Compounds 492 (1), L8-L12 (2010)

12. Auger electron spectroscopy and X‐ray photoelectron spectroscopy study of the electron‐stimulated surface chemical reaction mechanism for phosphor degradation, HC Swart, JJ Terblans, E Coetsee, Vinay Kumar, OM Ntwaeaborwa, MS Dhlamini, JJ Dolo , Surface and Interface Analysis 42 (6‐7), 922-926 (2010)

13. Photoluminescence properties of SrAl2O4: Eu2+, Dy3+ thin phosphor films grown by pulsed laser deposition
OM Ntwaeaborwa, PD Nsimama, Shreyas Pitale, IM Nagpure, Vinay Kumar, E Coetsee, JJ Terblans, HC Swart, PT Sechogela, Journal of Vacuum Science & Technology A 28 (4), 901-905 (2010)

14. Electron beam induced green luminescence and degradation study of CaS: Ce nanocrystalline phosphors for FED applications
Vinay Kumar, Varun Mishra, MM Biggs, IM Nagpure, OM Ntwaeaborwa, JJ Terblans, HC Swart, Applied Surface Science 256 (6), 1720-1724 (2010)

15 A surface chemical behaviour investigation of a promising low voltage cathodoluminescent LiSrBO3:Sm3+ phosphor V Kumar, SS Pitale, I Nagpure, OM Ntwaeaborwa, JJ Terblans, HC Swart, Luminescence, 25, 218–287 (2010 )

16 Synthesis of Ce3+ doped SrS nanocrystalline phosphors using a simple aqueous methodV Kumar, SS Pitale, MM Biggs, IM Nagpure, OM Ntwaeaborwa, HC Swart, Materials Letters 64 (6), 752-754 (2010).

17 Dependence of Eu3+ luminescence dynamics on the structure of the combustion synthesized Sr5(PO4)3 F host, IM Nagpure, SJ Dhoble, Manoj Mohapatra, Vinay Kumar, Shreyas S Pitale, OM Ntwaeaborwa, SV Godbole, HC Swart,  Journal of Alloys and Compounds 509 (5), 2544-2551 (2011)

18 Cathodoluminescent properties and surface characterization of bluish-white LiAl5O8: Tb phosphor, SS Pitale, V Kumar, IM Nagpure, OM Ntwaeaborwa, E Coetsee, HC Swart, Journal of Applied Physics 109 (1), 013105 (2011)

19 Luminescence characterization and electron beam induced chemical changes on the surface of ZnAl2O4: Mn nanocrystalline phosphor
SS Pitale, V Kumar, IM Nagpure, OM Ntwaeaborwa, HC Swart
Applied Surface Science 257 (8), 3298-3306 (2011)

20 Investigations on the low voltage cathodoluminescence stability and surface chemical behaviour using Auger and X-ray photoelectron spectroscopy on LiSrBO3: Sm3+  phosphorSS Pitale, IM Nagpure, V Kumar, OM Ntwaeaborwa, JJ Terblans, Materials Research Bulletin 46 (7), 987-994 (2011)

21 Luminescence investigations on LiAl5O8: Tb 3+ nanocrystalline phosphors, SS Pitale, V Kumar, I Nagpure, OM Ntwaeaborwa, HC Swart. Current Applied Physics 11 (3), 341-345 (2011)

22 Luminescence response and CL degradation of combustion synthesized spherical SiO2: Ce nanophosphor
IM Nagpure, Shreyas S Pitale, KG Tshabalala, Vinay Kumar, OM Ntwaeaborwa, JJ Terblans, HC Swart,

Materials Research Bulletin 46 (12), 2359-2366 (2011)

23 Synthesis, spectral and surface investigation of NaSrBO3: Sm3+ phosphor for full color down conversion in LEDs
V Kumar, AK Bedyal, SS Pitale, OM Ntwaeaborwa, HC Swart
Journal of Alloys and Compounds 554, 214-220 (2013)

24 Spectral and surface investigations of Mn2+ doped SrZnO2 nanocrystalline phosphors, AK Bedyal, Vinay Kumar, Vishal Sharma, SS Pitale, E Coetsee, MM Duvenhage, OM Ntwaeaborwa, HC Swart, Journal of Materials Science 48 (9), 3327 (2013)

25 Spectral and surface investigations on SrZnO2: Tb3+ nanophosphors
V Kumar, AK Bedyal, HC Swart, OM Ntwaeaborwa
Journal of Integrated Science and Technology 1 (1), 19-22  (2013)

26 Thermo-luminescence kinetic parameters of γ-irradiated Sr4Al14O25: Eu2+, Dy3+ phosphorsAK Bedyal, V Kumar, VK Singh, SP Lochab, F Singh, OM Ntwaeaborwa,Radiation Effects and Defects in Solids 168 (11-12), 1022-1029 (2013)

27 Application of He-Ne Laser to Study of the Variation of Refractive Index of Liquid Solutions with the Concentration
VK Singh, BBS Jaswal, V Kumar, R Prakash, P Rai
Journal of Integrated Science and Technology 1 (1), 13-18 (2013)

27 Luminescence and surface properties of Tb3+ doped Sr3(VO4) 2 nanophosphors, V Kumar, AK Bedyal, V Sharma, OM Ntwaeaborwa, HC Swart, Journal of Integrated Science and Technology 1 (1), 5-8 (2013 )

28 Thermoluminescence Response of Gamma Irradiated SrAl2O4: Eu2+/Dy3+ Nanophosphor, AK Bedyal, V Kumar, SP Lochab, F Singh, OM Ntwaeaborwa, HC Swart, International Journal of Modern Physics: Conference Series 22, 365-373  (2013)

29 X-ray absorption spectroscopy and photoluminescence study of rare earth ions doped strontium sulphide phosphors, A Vij, S Gautam, V Kumar, R Brajpuriya, R Kumar, N Singh, KH Chae
Applied Surface Science 264, 237-241 (2013)

30 Spectral and surface investigations of Ca2V2O7:Eu3+ nanophosphors prepared by citrate-gel combustion method: a potential red-emitting phosphor for near UV light-emitting diodes, V Kumar, AK Bedyal, J Sharma, V Kumar, OM Ntwaeaborwa, HC Swart
Applied Physics A, 116, 1785–1792 (2014 )

31 TOF SIMS analysis and enhanced UVB photoluminescence by energy transfer from Pr3+ to Gd3+ in Ca3(PO4)2:Gd3+, Pr3+ phosphor prepared by urea assisted combustion, P Mokoena, Mukut Gohain, Vinay Kumar, B Bezuidenhoudt, Hendrik Swart, O Ntwaeaborwa,  Journal of Alloys and Compounds, 595,33–38 (2014)

32 Spectral and surface investigations on Eu3+ doped K3Y(PO4)2 nanophosphor: A promising orange–red phosphor for white light-emitting diodesP Gupta, AK Bedyal, V Kumar, Y, Khajuria, V Kumar, E Coetsee-Hugo, Optical Materials, 36, 996-1001. (2014)

33 Applications of AES, XPS and TOF SIMS to phosphor materials
HC Swart, JJ Terblans, OM Ntwaeaborwa, RE Kroon, E Coetsee,
Surface and Interface Analysis (DOI: 10.1002/sia.5393) (2014)

34 A promising orange-red emitting nanocrystalline NaCaBO3: Sm3+ phosphor for solid state lightning AK Bedyal, V Kumar, OM Ntwaeaborwa, HC SwartMaterials Research Express 1 (1), 015006 (2014)

35 Importance of laser-induced breakdown spectroscopy for hard tissues (bone, teeth) and other calcified tissue materials, Vivek K Singh, Vinay Kumar, Jitendra Sharma, Lasers in Medical Science ( DOI 10.1007/s10103-014-1549-9) (2014)

36 Importance of Laser Induced Breakdown Spectroscopy for Biomedical Applications: A Comprehensive Review, Vivek K. Singh, Vinay Kumar, Jitendra Sharma, Yugal Khajuria, and Kaushal Kumar, Materials Focus 3, 169–182 (2014)

37 Synthesis and photoluminescence properties of Ca3B2O6:Tb3+ nanophosphors Mohit Manhas, Vinay Kumar, OM Ntwaeaborwa, HC Swart AIP Conference Proceedings 1591, 502-504 (2014)

38 Synthesis and photoluminescence study of Dy3+ doped Sr3B2O6:Nanophosphors, Neharika, Vinay Kumar, OM Ntwaeaborwa, HC Swart, AIP Conference Proceedings 1591, 558-560 (2014)

39 Tunable and white emission from ZnO:Tb3+  nanophosphors for solid state lighting applications Vinod Kumar, S Som, Vijay Kumar, Vinay Kumar, OM Ntwaeaborwa, E Coetsee, HC Swart, Chemical Engineering Journal, 255, 541–552 (2014)

40 Enhanced UVB emission and analysis of chemical states of Ca5(PO4)3OH:Gd3+, Pr3+  phosphor  prepared by co-precipitation, PP Mokoena, IM Nagpure, Vinay Kumar, RE Kroon, EJ Olivier, JH Neethling, HC Swart, OM Ntwaeaborwa, Journal of Physics and Chemistry of Solids ,75, 998–1003 (2014)

41 Photoluminescence and thermoluminescence properties of Tb3+ doped K3Gd(PO4)2 nanophosphor, Palvi Gupta, AK Bedyal, Vinay Kumar, Y Khajuria, SP Lochab, SS Pitale, O.M. Ntwaeaborwa, H.C. Swart Materials Research Bulletin, 60, 401–411 (2014 )

42 Swift heavy ion induced structural, optical and luminescence modification in NaSrBO3:Dy3+ phosphor, AK Bedyal, Vinay Kumar, V Sharma, Fouran Singh, SP Lochab, OM Ntwaeaborwa, HC Swart, Journal of  Material  Science, 49, 6404–6412 (2014)

43 Potential of Sr4Al14O25: Eu2+,Dy3+ inorganic oxide-based nanophosphor in Latent fingermark detection, Vishal Sharma, Amrita Das, Vinay Kumar, O. M. Ntwaeaborwa, H. C. Swart , Journal of  Material  Science 49, 2225-2234. (2014 )

44 A Promising Orange-Red Nanocrystalline Potassium Lanthanum Orthophosphate for White Light-Emitting DiodesP Gupta, AK Bedyal, V Kumar, Y, Khajuria, O. M. Ntwaeaborwa, and H. C. Swart Indian Journal of Materials Science 2014, Article ID 794680, 4 pages (2014)

45 A near UV-converted LiMgBO3:Dy3+ nanophosphor: surface and spectral investigations. A K Bedyal, V Kumar, R Prakash, O M Ntwaeaborwa, H C Swart, Applied Surface Science, 329, 40–46 (2015)

46 Spectroscopic studies and quantum chemical investigations of (3, 4-dimethoxybenzylidene) propanedinitrile, Vinay Kumar, Yugal Khajuria, Vivek K Singh, Rajni Kant, Ujval Gupta ,Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy , 140, 65–73 (2015 )

47 Discrimination of Various Writing/Office/Photocopying Papers by Using Diffuse Reflectance UV-Vis-NIR Spectroscopy: Application in Forensic Questioned Documents, Vishal Sharma, Raj Kumar, Vinay Kumar, Applied Spectroscopy, 69,714–720. (2015)

48 Enhanced orange-red emission from KSrVO4:Sm3+ nanophosphor for possible application in blue light-emitting diode based white LED P Biswas, Vinay Kumar, OM Ntwaeaborwa, HC Swart, Material Research Express (IOP), 2, 025010  (2015)

49  Crystal structure and kinetic studies of gamma exposed Ca3B2O6:Tb3+ nanophosphor Vinay Kumar, Mohit Manhas, Garima Agrawal, HC Swart, OM Ntwaeaborwa ,Indian Journal of Physics, DOI 10.1007/s12648-015-0657-0 (2015)

50. Thermoluminescence and Kinetic Parameters of gamma-exposed Sr3B2O6 :Sm3+ Nanophosphors, Neharika, V Kumar, OM Ntwaeaborwa, HC Swart Int. J Lumin applic 5 (1), 15-19 (2015)

51. Synthesis and Thermoluminescence studies of gamma ray induced Ca3B2O6:Bi3+ nanophosphor M Manhas, V Kumar, OM Ntwaeaborwa, HC Swart , Int. J Lumin applic 5 (1), 89-93 (2015 )

52. Luminescence, Optical and Surface Studies of Green Emitting KCaBO3:Tb3+ Nanophosphors AK Bedyal, V Kumar, OM Ntwaeaborwa, HC Swart Int. J Lumin applic 5 (1), 47-50 (2015 )

53. Surface And Thermoluminescence Study Of Dy3+ Doped Sr3B2O6 Nanocrystalline Phosphor, Neharika, V Kumar, J Sharma, OM Ntwaeaborwa, HC Swart Advanced Materials Letters, 6, 402-406 (2015)

54. The influence of Ag9+ ion irradiation on the structural, optical and luminescence properties of Sm3+ doped NaSrBO3 : Stability of color emission AK Bedyal, V Kumar, VK Singh, F Singh, SP Lochab, OM Ntwaeaborwa, Nuclear Instruments and Methods in Physics Research B 351, 27-34 (2015)

55. Thermoluminescence of calcium phosphate co-doped with gadolinium and praseodymium, P.P. Mokoena , M.L. Chithambo, Vinay Kumar, H.C. Swart, O.M. Ntwaeaborwa, Radiation Measurements 77, 26-33 (2015 )

56  Combustion Synthesis and Characterization of Inorganic Nano-Crystalline SrAl2O4:Eu3+: Its Application in Detection of Latent Fingerprints A. Das, Vinay Kumar, Vishal Sharma, Tata-McGraw Hill., ISBN: 13:978-93-39221-09-6, 210-215  (2015)

57  A novel yellowish white Dy 3+ activated α-Al2O3 phosphor: Photoluminescence and optical studies Sandeep Kumar, Ram Prakash, Vinay Kumar, Functional Materials Letters 6 , 1550061 (2015).

58 M. Manhas, Vinay Kumar, O. M. Ntwaeaborwa, H. C. Swart, “Photoluminescence and thermoluminescence investigation of Ca3B2O6:Sm3+ phosphor”, Material Research Express, 2, 075008. (2015)

59. Palvi Gupta, A. K. Bedyal, Vinay Kumar ,Y. Khajuria, Vishal Sharma ,O.M. Ntwaeaborwa  H. C. Swart, “Energy transfer mechanism from Gd3+ to Sm3+ in K3Gd(PO4)2:Sm3+ phosphor”, Material Research. Express, 2 076202 (2015).

60.  Raj Kumar, Vinay Kumar, Vishal Sharma, “Discrimination of Various Paper Types Using Diffuse Reflectance Ultraviolet–Visible Near-Infrared (UV-Vis-NIR) Spectroscopy: Forensic Application to Questioned Documents”, Applied Spectroscopy, 69 (2015) 714-720.

 2015

61. Sandeep Kumar, Ram Prakash, Vinay Kumar, G.M. Bhalerao, R. J. Choudhary , D. M. Phase, “Surface and spectral studies of Eu3+ doped α-Al2O3 synthesized via solution combustion synthesis”, Advanced Powder Technology, 26 (4), 2015, 1263-1268. (2015 )


62.  Palvi Gupta, A.K. Bedyal, Vinay Kumar, V.K. Singh, Y. Khajuria, O.M. Ntwaeaborwa, H.C. Swart “ Thermoluminescence and glow curves analysis of γ-exposed Eu3+ doped K3Y(PO4)2 nanophosphors”, Material Research Bulletin 73 (2016) 111