Focus on Terahertz in India, the Indian Institute of Technology, and S.K. Ray

http://www.iitkgp.ac.in/fac-profiles/showprofile.php?empcode=aSddY
My Note: I was searching for Terahertz research in India, and came across this page (which I have abbreviated), I intend to dig deeper on the topic of THz in India and China. If you would like your website, company or research mentioned please email me.

Samit Kumar Ray

	S K Ray Ph.D.(IIT Kharagpur) Professor, Physics & Meteorology Head of the Department, Physics & Meteorology
	S K Ray joined the Institute in 1991

Contact Addresses

Residence	A-130, IIT Campus, Kharagpur 721302
Phone (office)	+91 - 3222 - 283838
Phone (residence)	+91 - 3222 - 283839 (IIT Phone)
email	physkr @ phy.iitkgp.ernet.in
More Information	http://www.facweb.iitkgp.ernet.in/~samit/index.htm

Research Areas

• Semicondutor nanostructures
• Condensed Matter Physics
• Thin Films
• Photovoltaics

Awards & Honours

• BOYSCAST Fellow Award (1995)
• Homi J.Bhabha Award for Research in Applied Sciences from the University Grant Commission (2002)
• INSA Young Scientist Award (1993)
• Materials Research Society of India (MRSI) Medal (2007)
• CDIL Award for Industry of IETE (1997)
• INSA Young Scientist (1993)
• Homi J. Bhabha award (2001)
• MRSI Medal (2007)
• CDIL Award, IETE (1997)

Current Sponsored Projects

• Project Title : MBE growth of strained Si/Ge layers and self-assembled Ge islands for heterostructure MOSFETs and flash memory devices
  Principal Investigator : S. K. Ray
  Sponsor : DST, New Delhi
• Project Title : Development & characterization of nanostructured thin films for SiGe quantum well infrared photodetector and ferroelectric based gas/chemical sensors
  Principal Investigator : S. K. Ray
  Co-Principal-Investigators : I. Manna & A. Dhar
  Sponsor : DRDO
• Project Title : Fabrication and characterization of Novel Photonic Crystal Structures and Si/Ge Quantum Dots for Photonic Applications
  Principal Investigator : S. K. Ray
  Co-Principal-Investigators : L. Pavesi
  Sponsor : India-Trento Programme for Advanced Research
• Project Title : Terahertz emission of Si/SiGe structures doped with shallow acceptors
  Principal Investigator : S. K. Ray
  Co-Principal-Investigators : P. Roychoudhuri
  Sponsor : DST-RFBR
• Project Title : Fabrication of group-IV semiconductor (Si&Ge) nanowires for flash memory and nanoelctronic devices
  Principal Investigator : Prof. S. K. Ray
  Co-Principal-Investigators : Prof. S. Maikap, CGU, Taiwan
  Sponsor : India-Taiwan Programme in Science & Technology

On-going Consultancy Projects

• Project Name : Thin Film Characterization
  Client : Various department s& agaencies
  Consultant : S. K. Ray
  Co-consultant(s) : A. Dhar

Publications: 2010 - 2011

• Room temperature infrared photoresponse of self assembled Ge/Si (001) quantum dots grown by molecular beam epitaxy by 1. R. K. Singha, S. Manna, S. Das, A. Dhar, and S. K. Ray Applied Physics Letters, 96, 233113 (2010)
• Microstructural characteristics and phonon structures in luminescence from surface oxidized Ge nanocrystals embedded in HfO2 matrix by S. Das, R. K. Singha, S. Gangopadhyay, A. Dhar, and S. K. Ray, J. of Applied Physics, 108, 053510 (2010)
• Photoinduced charge transfer and photovoltaic energy conversion in self-assembled N,N-dioctyl-3,4,9,10-perylenedicarboximide nanoribbons by S. Karak, S. K. Ray, and A. Dhar Applied Physics Letts, 97, 043306 (2010)
• Light emission and floating gate memory characteristics of germanium nanocrystals by S. Das, S. Manna, R.K.Singha, A.leksei Anopchenko, N. Daldosso, L. Pavesi, A. Dhar, and S. K. Ray, “ Phys. Status Solidi A, DOI 10.1002/pssa.201 (2010)
• Nonvolatile and unipolar resistive switching characteristics of pulsed laser ablated NiO films by D. Panda, A. Dhar, and S. K. Ray J. Appl. Phys., 108, 104513, (201)
• Temperature dependent growth and optical properties of SnO2 nanowires and nanobelts by S. P. Mondal, S. K. Ray, J Ravichandran and I. Manna“ Bull. Mater. Sci, 33, , p. 357 (2010)
• Microstructural, chemical bonding, stress development and charge storage characteristics of Ge nanocrystals embedded in hafnium oxide by S. Das, R. K. Singha, S. Manna, S. Gangopadhyay, A. Dhar, S. K. Ray J. Nanopart. Res., 13, p. 587 (2011)
• Improvement of efficiency in solar cells based on vertically grown copper phthalocyanine nanorods by S Karak, S K Ray and A Dhar J. Phys. D: Appl. Phys, 43, p. 245101 (2010)
• Interplay of defects in 1.2 MeV Ar irradiated ZnO by S. Chattopadhyay, S. Dutta, D. Jana, S. Chattopadhyay, A. Sarkar, P. Kumar, D. Kanjilal, D. K. Mishra, and S. K. Ray Journal of Applied Physics, 107, p.113516 (2010)
• Structural and optical properties of germanium nanostructures on Si(100) and embedded in high-k oxides by Samit K Ray, Samaresh Das, Raj K Singha, Santanu Manna, Achintya Dhar, “ Nanoscale Research Letters, 6, 224 (2011)
• Optical property modification of ZnO: Effect of 1.2 MeV Ar irradiation by Soubhik Chattopadhyay, Sreetama Dutta, Palash Pandit, D. Jana, S. Chattopadhyay, A. Sarkar,P. Kumar, D. Kanjilal, D. K. Mishra, and S. K. Ray, Phys. Status Solidi C, 8, p.512 (2011)
• Structural and impedance spectroscopy of pseudo-co-ablated (SrBi2Ta2O9)(1−x)–(La0.67Sr0.33MnO3)x Composites by S Maity, D Bhattacharya and S K Ray J. Phys. D: Appl. Phys., 44, p.095403 (2011)
• Influence of deposition temperature on structure and morphology of nanostructured SnO2 films synthesized by pulsed laser deposition by S .K. Sinha, R. Bhattacharya, S.K. Ray, I. Manna Mterials Letters, 65, pp. 146-149, (2011)

Publications: 2009 - 2010

• Enhanced broadband photoresponse of Ge/CdS nanowire radial Heterostructures by S. P. Mondal and S. K. Ray Applied Physics Letters, 94, 223119 (2009)
• Ge based nanostructures for electronic and photonic devices by S.K. Ray, R.K. Singha, S. Das, S. Manna, A. Dhar, Microelectronics & Reliability, doi:10.1016/j.micror (2010)
• Photoluminescence and electrical transport characteristics of ZnO nanorods grown by vapor-solid technique by S. Mandal, K. Sambasivarao, A. Dhar, and S. K. Ray Journal of Applied Phys, 106, 024103, (2009)
• Amperometric Detection of Glucose Biomolecules Using ZnO Tripods and Nanorods: A Comparative Study by 10. Surajit Mandal, Kurra Sambasivarao, Himadri Mullick, Achintya Dhar, Tapan Kumar Maiti, and Samit Kumar Ray Sensors Letters, Vol. 7, 1–5 (2009)
• Investigation of strain in self-assembled multilayer InAs/GaAs quantum dot heterostructures by S. Adhikary, N. Halder, S. Chakrabarti, S. Majumdar, S.K. Ray, M. Herrera, M. Bonds, N.D. Browning“ Journal of Crystal Growth, 312, pp. 724-729 (2010)
• Single Hole Charging at Room Temperature of Ge Quantum Dots Grown on Si(001) by Molecular Beam Epitaxy by R. K. Singha, S. Das, A. Dhar, S. K. Lahiri, S. K. Ray, A. Surawijaya, and S. Oda Nanoscience and Nanotechnology Letters, 1, pp. 82-86 (2009)
• Improved charge storage characteristics of the tetralayer non-volatile memory structure using nickel nanocrystal trapping layer by D. Panda, A. Dhar and S. K Ray Semicond. Sci. Technol. 24, 24, 115020 (2009)
• Dielectric and transport properties of carbon nanotube-CdS nanostructures embedded in polyvinyl alcohol matrix by S. P. Mondal, R. Aluguri, and S. K. Ray Journal of Applied Physics, 105, 114317 (2009)
• Structural and Magnetic field dependent transport properties of p-MnxGe1-x/n-Ge heterojunction by S. Majumdar, A. K. Das and S. K. Ray International Journal of Modern Physics B, 23, 3579 (2009)
• Deep-level spectroscopy studies of confinement levels in SiGe quantum wells by I.V. Antonova, E. P. Neustroev, S.A. Smagulova, M.S. Kagan, P.S.Alekseev, S.K. Ray, N.Sustersic, and J. Kolodzey, “ Journal of Applied Physics, 106, 084903 (2009)
• Confinement levels in SiGe quantum wells studied by charge spectroscopy by M. Kagan, I. Antonova, E. Neustroev, S. Smagulova, P. Alekseev, S. K. Ray, N. Sustersic, and J. Kolodzey Phys. Status Solidi ,C, 6, p.270 (2009)
• Confinement Levels in Passivated SiGe/Si Quantum Well Structures by I.V. Antonova, E.P. Neustroev, S.A. Smagulova, M.S. Kagan, P.S. Alekseev, S.K. Ray, N. Sustersic and J. Kolodzey Solid State Phenomena, 156-158, p.541 (2010)
• Organic photovoltaic devices based on pentacene/N,N0-dioctyl-3,4,9,10-perylenedicarboximide heterojunctions by S. Karak, V.S. Reddy, S.K. Ray, A. Dhar Organic Electronics, 10, pp. 1006–1010 (2009)
• Photovoltaic properties of pentacene/[6,6]-phenyl C61 butyric acid methyl ester based bilayer hetero-junction solar cells by V S Reddy, S Karak, S K Ray and A Dhar J. Phys. D: Applied Physics, 42, 145103 (2009)
• Microstructure and magnetic properties of melt-spun Cu0.95Co0.05 granular alloy by S. Majumdar, R.K.Singha, J.Yoon, M.H.Jung, M.Chakraborty, A.K.Das, S.K.Ray PhysicaB, 404, p. 1858 (2009)
• Phase composition and electrical characteristics of nickel silicide Schottky contacts formed on 4H–SiC by I Nikitina, K Vassilevski, A Horsfall, N Wright, A G O’Neill, S K Ray, K Zekentes and C M Johnson Semiconductor Science & Technology, 24, 055006 (2009)
• Improved photovoltaic properties of pentacene/N,N0-Dioctyl-3,4,9,10-perylenedicarboximide-based organic heterojunctions with thermal annealing by S. Karak, S.K. Ray, A. Dhar Solar Energy Materials & Solar Cells, 94, pp. 836–841 (2010)
• Bonding, vibrational and electrical characteristics of CdS nanostructures embedded in polyvinyl alcohol matrix, by S. P. Mondal, A. Chakraborty, A. Dhar and S. K. Ray Journal of Applied Physics, 105, 084309 (2009)
• Properties of self-assembled Ge Islands grown by molecular beam epitaxy by S. K. Ray, R. K. Singha, S. Das, K. Das and A. Dhar International Journal of Nanotechnology, Vol. 6, pp.552-566 (2009)