This document lists publications by Manish K. Bafna and collaborators P. Sen and P.K. Sen in international journals, international conferences, and national conferences from 2004-2015. The publications focus on theoretical and experimental studies of the optical and photoluminescence properties of semiconductor quantum dots and quantum wires, including their temperature dependence and effects of biexcitons. Many publications examine InGaAs/GaAs and CdSe quantum dots specifically. The listed conferences include Photonics, Nanostructured Materials, and various National Laser Symposia.
Efficient charge transfer induced organic/inorganic based hybrid heterojunction of Ppy/GaN nanorods for high-performance self-powered UV photodetection
Over five years research and development experience in silicon wafer based solar photovoltaics. Specialized in characterization of silicon wafer and solar cells. Developed and establish methods for the measurement of diffusion length in higher lifetime wafers, front and back surface recombination in silicon solar cell.
Efficient charge transfer induced organic/inorganic based hybrid heterojunction of Ppy/GaN nanorods for high-performance self-powered UV photodetection
Over five years research and development experience in silicon wafer based solar photovoltaics. Specialized in characterization of silicon wafer and solar cells. Developed and establish methods for the measurement of diffusion length in higher lifetime wafers, front and back surface recombination in silicon solar cell.
Microwave radiation guidelines and debate during the last 50 yearsMikko Ahonen
Radiofrequency (RF) radiation guidelines. Debate between East and West on health effects. Science and politics. ICNIRP, FCC and IEEE. Radars, mobile phones, base stations and Wi-Fi. Relevant also to future technologies (like 5G).
Electrical characterization of non conducting materials using reflection basedPallavi Malame
ME project thesis ppt.
Electrical characterization of variety of liquids like oils, sugar solution, honey and milk using open ended coaxial cable technique (simulation as well as experimentally) which is a reflection based microwave method. and Electrically characterization of variety of solids like substrates and wood using waveguide fixture method (simulation as well as experimentally) which is based on Transmission/Reflection based method.
A universal challenge facing the development of electrochemical materials is our lack of understanding of physical and chemical processes at local length scales in 10-100 nm regime, and acquiring this understanding requires a new generation of imaging techniques that can resolve local chemistry and fast dynamics in electrochemical materials at the time and length scales relevant to strongly coupled reaction and transport phenomena. In this article, we introduce the scanning thermo-ionic microscopy (STIM) technique for probing local electrochemistry at the nanoscale, utilizing Vegard strain induced via thermal stress excitations for imaging. We have implemented this technique using both resistive heating through a microfabricated AFM thermal probe, as well as photo-thermal heating through a 405 nm laser, and have applied it to a variety of electrochemical materials. The dynamics of ionic motion can be captured from point-wise spectroscopy studies, while the spatial inhomogeneity can be revealed by STIM mapping. Since it utilizes thermal stress-induced oscillation as its driving force, the responses are insensitive to the electromechanical, electrostatic, and capacitive effects, and is immune to global current perturbation, making in-operando testing possible. In principle, STIM can provide a powerful tool for probing local electrochemical functionalities at the nanoscale.
Waveguide Fixture Based Permittivity Determination of Non-Conducting MaterialsPallavi Malame
In this paper, measurement system used for property determination through dielectric constant of non conducting materials like substrates and wood is presented. The system works on the principle of transmission/reflection based microwave technique. The proposed system electrically characterizes a material using a waveguide fixture and Vector Network Analyzer (VNA).
Dr. Mitat A. Birkan presents an overview of his program, Space Propulsion and Power, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Jim Hwang presents an overview of his program, GHz-THz Electronics, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
A PROXIMITY FEED DUAL BAND CIRCULAR SHAPED ANTENNA WITH SEMICIRCULAR GROUND P...Amitesh Raikwar
In this work, we present a Circular Shaped proximity feed
Microstrip Patch Antenna. The antenna is comprised of circular
shaped radiation patch and this radiating patch is faded
by proximity coupling. The ground plane of the antenna has
Semicircular pattern to improve the coupling level of the
patch. The simulated result shows it provides the return loss
less than -10 dB for two frequencies 1.27 GHz and 1.43 GHz
which could be a useful frequencies for wireless communication
system. The simulation work is carried out on IE3D
software, a product of Zeland Software Company.
NOVEL METHODOLOGY OF THE ULTRA SONIC BEAM IN LINEAR ARRAY TRANSDUCER FOR HIGH...Journal For Research
In this paper, the focusing of ultrasound beam is considered. Electronic circuitry is considered as support to the theme of the work. The results presented in this paper are notable for improved resolution. The extension of the application diversity is also proposed based on use of Piezo electric transceducers.
IL marketing nel settore dei servizi richiede approfondimenti particolari.
Alcuni esempi qui riportati risalgono a campagne marketing di una decina di anni fa, ancora valide come esempi
Microwave radiation guidelines and debate during the last 50 yearsMikko Ahonen
Radiofrequency (RF) radiation guidelines. Debate between East and West on health effects. Science and politics. ICNIRP, FCC and IEEE. Radars, mobile phones, base stations and Wi-Fi. Relevant also to future technologies (like 5G).
Electrical characterization of non conducting materials using reflection basedPallavi Malame
ME project thesis ppt.
Electrical characterization of variety of liquids like oils, sugar solution, honey and milk using open ended coaxial cable technique (simulation as well as experimentally) which is a reflection based microwave method. and Electrically characterization of variety of solids like substrates and wood using waveguide fixture method (simulation as well as experimentally) which is based on Transmission/Reflection based method.
A universal challenge facing the development of electrochemical materials is our lack of understanding of physical and chemical processes at local length scales in 10-100 nm regime, and acquiring this understanding requires a new generation of imaging techniques that can resolve local chemistry and fast dynamics in electrochemical materials at the time and length scales relevant to strongly coupled reaction and transport phenomena. In this article, we introduce the scanning thermo-ionic microscopy (STIM) technique for probing local electrochemistry at the nanoscale, utilizing Vegard strain induced via thermal stress excitations for imaging. We have implemented this technique using both resistive heating through a microfabricated AFM thermal probe, as well as photo-thermal heating through a 405 nm laser, and have applied it to a variety of electrochemical materials. The dynamics of ionic motion can be captured from point-wise spectroscopy studies, while the spatial inhomogeneity can be revealed by STIM mapping. Since it utilizes thermal stress-induced oscillation as its driving force, the responses are insensitive to the electromechanical, electrostatic, and capacitive effects, and is immune to global current perturbation, making in-operando testing possible. In principle, STIM can provide a powerful tool for probing local electrochemical functionalities at the nanoscale.
Waveguide Fixture Based Permittivity Determination of Non-Conducting MaterialsPallavi Malame
In this paper, measurement system used for property determination through dielectric constant of non conducting materials like substrates and wood is presented. The system works on the principle of transmission/reflection based microwave technique. The proposed system electrically characterizes a material using a waveguide fixture and Vector Network Analyzer (VNA).
Dr. Mitat A. Birkan presents an overview of his program, Space Propulsion and Power, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Jim Hwang presents an overview of his program, GHz-THz Electronics, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
A PROXIMITY FEED DUAL BAND CIRCULAR SHAPED ANTENNA WITH SEMICIRCULAR GROUND P...Amitesh Raikwar
In this work, we present a Circular Shaped proximity feed
Microstrip Patch Antenna. The antenna is comprised of circular
shaped radiation patch and this radiating patch is faded
by proximity coupling. The ground plane of the antenna has
Semicircular pattern to improve the coupling level of the
patch. The simulated result shows it provides the return loss
less than -10 dB for two frequencies 1.27 GHz and 1.43 GHz
which could be a useful frequencies for wireless communication
system. The simulation work is carried out on IE3D
software, a product of Zeland Software Company.
NOVEL METHODOLOGY OF THE ULTRA SONIC BEAM IN LINEAR ARRAY TRANSDUCER FOR HIGH...Journal For Research
In this paper, the focusing of ultrasound beam is considered. Electronic circuitry is considered as support to the theme of the work. The results presented in this paper are notable for improved resolution. The extension of the application diversity is also proposed based on use of Piezo electric transceducers.
IL marketing nel settore dei servizi richiede approfondimenti particolari.
Alcuni esempi qui riportati risalgono a campagne marketing di una decina di anni fa, ancora valide come esempi
1. INTERNATIONAL JOURNALS
1. Manish K. Bafna, Manish Kumar Bafna, P. Sen and P. K. Sen (2006), Temperature
dependence of the photoluminescence properties of self assembled InGaAs/GaAs single
quantum dot, J. Appl. Phys., 100 pp 103515.
2. M. K. Bafna, P. Sen and P. K. Sen (2006) “Effect of temperature on nonlinear optical
properties of InGaAs/GaAs single quantum dot”, Indian Journal of Pure and Applied
Physics, 44, pp. 152-156.
3. P. K. Sen, Saral Gupta and Manish Bafna (2004) Biexcitonic effect on the nonlinear
optical properties of GaAs/AlxGa1-xAs quantum wire near the band edge, Superlattices
and Microstructures, 35, 125-135.
4. P. K. Sen, Manish Bafna and Saral Gupta (2004) Biexcitonic effect on optical nutation in
semiconductor quantum wires, J. Appl. Phys., 96 issue 10 pp 5552( also published in
virtual Journal of Applied Physics) .
5. M. K. Bafna, P. Sen and P. K. Sen (2012) “Theoretical study of spin splitting in parabolic
semiconductor quantum dots”, Indian Journal of Pure and Applied Physics,Vol.50(8)571-
575(2012).
6. Manish K. Bafna, P. Sen and P. K. Sen, Coherent transient effects on in a
InGaAs/GaAs semiconductor quantum dot, Indian Journal of Pure and Applied
Physics,vol.51(08)555-557(2013).
7. Manish K. Bafna, P. Sen and P. K. Sen ,Study of dipole moment calculations for
various transitions on polarization state of output radiation Indian Journal of Pure
and Applied Physics vol.53(04)221-224(2015).
INTERNATIONAL CONFERENCES
1. Pranay K. Sen, Manish Bafna and Saral Gupta, Biexcitonic enhancement of nonlinear
optical processes on near band gap in GaAs quantum well structures, International
Conference Photonics – 2002 (Dec. 16-18, 2002) (Mumbai).
2. Pranay K. Sen, Manish K. Bafna and S. K. Gupta, Coherent transient effects in quantum
wires, Porc. Of International Conference on Optoelectronics Technology (ICOT-2004) (12-
14, Jan. 2004), pp. 381-390, North Maharashtra Univ., Jalgaon (Invited Talk).
2. 3. M. K. Bafna, P. Sen and P. K. Sen, Temperature dependence of optical properties of
InGaAs/GaAs single quantum dot, 7th
Int. Conf. on Optoelectronics, Fiber Optics and
Photonics, Photonics-2004 (9-11 Dec., 2004), (Cochin), 305.
4. H. K. Gahir, M. K. Bafna, P. Sen and P. K. Sen, Heavy-hole transitions and polarization
characteristics of radiation output from CdSe quantum dot, 7th
Int. Conf. on
Optoelectronics, Fiber Optics and Photonics, Photonics-2004 (9-11 Dec., 2004) (Cochin),
373.
5. Manish K. Bafna, H. K. Gahir, P. Sen and Pranay K. Sen - Effect of Shape and Size
Anisotropies on Energy Levels of CdSe Quantum Dots, Eighth International Conference on
Nanostructured Materials (NANO-2006), D-48, p.60 (Oral Presentation).
6. Manish K. Bafna, Mohd. Shakil Qureshi, P. Sen and Pranay K. Sen, Temperature
Dependence of Photoluminescence Spectra of InGaAs/GaAs Quantum Dots, Eighth
International Conference on Nanostructured Materials(NANO-2006), D-47, p.60 (Poster
Presentation ).
7. Mohd. Shakil Qureshi, Manish K. Bafna, P. Sen and Pranay K. Sen - Coherent Control in
InGaAs/ GaAs Quantum Dot, Eighth International Conference on Nanostructured
Materials (NANO-2006), D-46( Oral Presentation ).
8. P. Sen, Manish K. Bafna and Pranay K. Sen (December 13 – 16, 2006) Temperature
dependence of the photoluminescence linewidth of In0.4Ga0.6As/GaAs quantum dot,
Photonics-2006 Hyderabad, p.166 .
NATIONAL CONFERENCES
1. Saral K. Gupta and P. K. Sen, Intensity dependent optical properties of GaAs/AlxGa1-xAs
quantum wire in presence of biexcitons, Proceedings of National Laser Symposium (22-24
Dec. 2003, IIT-Kharagpur) pp. 469-470.
2. Manish K. Bafna, Saral K. Gupta and P. K. Sen, Role of biexciton density on the optical
nutation in GaAs/AlxGa1-xAs quantum wire near the band edge, Proceedings of National Laser
Symposium (22-24 Dec. 2003, IIT-Kharagpur) pp. 471-472.
3. Saral K. Gupta, Manish K. Bafna and Pranay K. Sen, Optical nutation in a magnetized
semiconductor quantum wire, Proceedings of National Laser Symposium (22-24 Dec. 2003,
IIT-Kharagpur) pp. 481-482.
4. Manish K. Bafna, P. Sen and P. K. Sen, Coherent transient effect in GaAs/AlxGa1-xAs
semiconductor quantum dot, Proceedings of 4th
DAE-BRNS National Symposium (10-13 Jan.
2005) BARC, Mumbai.
3. 5. Pranay K. Sen, Manish K. Bafna and S. K. Gupta, Biexcitonic effect on optical coherent
transient in quantum wires, Proceedings of National Conference on Lasers and their
Applications in Basic and Applied Sciences (NCLBAS-2005) (10-13 Jan. 2005) Shantiniketan,
pp. 12 (Invited Talk).
6. Manish K. Bafna, P. Sen and P. K. Sen, Coherent transient effect in GaAs/AlxGa1-xAs
semiconductor quantum dot, Proceedings of National Symposium on Science, Technology &
Application of Nanomaterials (NSNM-05) (21-22 March 2005) Baroda, pp. 33 (Oral
Presentation).
7. Manish K. Bafna, P. Sen and P. K. Sen, Effect of temperature on optical properties of
InGaAs/GaAs single quantum dot, Proceedings of National Symposium on Science,
Technology & Application of Nanomaterials (NSNM-05) (21-22 March 2005) Baroda, pp. 34 .
8. Pratima Sen, Mohd. Shakil Qureshi and Manish K. Bafna, Biexciton two-photon absorption
in single CdSe semiconductor quantum dot, Proceedings of 5th
DAE-BRNS National Laser
Symposium (NLS-5) (7-10 Dec., 2005, Vellore, Tamil Nadu), p. 74.
9. Manish K. Bafna, P. Sen and P. K. Sen, Strain Induced coherent transient Effects on in a
InGaAs/GaAs semiconductor quantum dot, Proceedings of 8th
DAE-BRNS National Laser
Symposium (NLS-08) (7-10 Jan., 2008, New Delhi), p. 58.