Dr.R.D.S.Yadava

Professor
Ph D (BHU)
Contact Information:
Tel. +91 542 2366052(R),+91-9450246572(Mo), Fax: +91-542-2368390
Email Id:[email protected], [email protected]

 
 
Academic Qualifications:
 
S. No.DegreeInstitutionYear
1.B.Sc.Banaras Hindu University, Varanasi1974
2.M.Sc.Banaras Hindu University, Varanasi1976
3.Ph. D.Banaras Hindu University, Varanasi1981
 
Brief writeup on area of specialization/awards/achievements:
 

(a) Electronic Nose Research: Our research interest is focused on developing electronic nose (eNose) technology for detection of explosives, chemical agents, body odor and environmental pollutants. The specific target applications are landmine detection, chemical weapon detection, biometric identification, health monitoring and industrial hazard monitoring. The present eNose research efforts pertain to the sensor array based machine learning system whose working paradigm is analogous to the biological smell sensing organ. The eNose is thus a biomimetic electronic system integrated with odor discrimination intelligence. In this, the olfactory receptor neurons are replaced by the sensor array, the olfactory bulb is replaced by signal processor, and the cortex part of human brain where odor perception occurs is replaced by machine intelligence. Our research efforts are directed on all the major fronts of this field, namely, the sensor array design and development, signal processing methods and algorithms, and the machine intelligence consisted of pattern recognition and data/information fusion methods.
(b) Coupled Nonlinear Oscillations Research: Our research efforts in this field are directed to modeling and analysis of dynamics of self-sustained autonomous nonlinear oscillators and their coupled systems based on SAW, QCM and microcantilever resonators. The objective is design innovations for making high performance sensors. Future extension to integrated sensor system mimicking biological rhythmic processes such as firing of neurons or heart beat is intended.
(c) Defence Research & Development Experience: For 25 years from December 2005 to October 1980, I worked as R&D Scientist through various positions from Scientist 'B' to Scientist 'F' at Solid State Physics Laboratory, Defence Research and Development Organization, Government of India, Delhi. While in DRDO, I worked for a number of development projects and programs ranging from the narrow gap semiconductor materials, infrared (IR) sensors and sensor array to the surface acoustic wave (SAW) signal processing devices, vapor sensors and radar pulse compression subsystem. In addition, I worked on several research problems such as noise phenomena, ac conductance and breakdown in metal-oxide-semiconductor field-effect (MOSFET) structures, fractal basis for variable range hopping conduction, 1/f fluctuations and dielectric response of metal-insulator percolation systems, and phenomena of radiation blistering in solids.

Awards:
National Scholarship Holder, SSPL Scientist of the Year

 
Current Research Projects:
 

While working in DRDO (Oct 1980 - Dec 2005), carried out several research and development projects spanning over semiconductor materials and devices, infrared sensors, surface acoustic wave devices and sensors, radar signal processing and chemical agent sensors. Since Dec 2005, after joining BHU, undertook the following projects.

  • DST sponsored project "Feasibility study for development of electronic nose technology" (2007 onwards: Rs. 24.12 Lakhs) PI
  • DRDO sponsored project "Development of data fusion models and algorithms for molecular recognition in polymeric multisensor platforms" (2008 onwards: Rs. 40.112 Lakhs) PI
  • DRDO sponsored project "Detection of biogenic amines (BA) based on quartz crystal microbalance (QCM) and fiber optic chemical sensors (FOCS) for monitoring food safety against bacterial degradation" (2008 onwards: Rs. 14.12 Lakhs) Co-PI
 

List of 10 major Publications:

  1. Solvation, transduction and independent component analysis for pattern recognition in SAW electronic nose, R D S Yadava, Ruchi Chaudhary, Sensors and Actuators B, vol. 113, 2006, pp. 1-21.
  2. Preprocessing of SAW sensor array data and pattern recognition, Sunil K Jha, R D S Yadava, IEEE Sensors J., vol. 9, no. 10, Oct 2009, pp. 1202-1208.
  3. Denoising by singular value decomposition and its application to electronic nose data processing, Sunil K Jha, R D S Yadava, IEEE Sensors J., in press.
  4. Enhancing mass sensitivity of SAW delay line sensor by chirping transducers R D S Yadava, Sensors and Actuators B, vol. 114, 2006, pp. 127-131.
  5. Multifrequency characterization of viscoelastic polymers and vapor sensing based on SAW oscillators, R D S Yadava, R Kshetrimayum, Mamta Khaneja, Ultrasonics, vol. 49, 2009, pp. 638-645.
  6. Hole scattering mechanisms in Hg1-xCdxTe, R D S Yadava, A K Gupta, A V R Warrier, Journal of Electronic Materials, vol. 23, 1994, pp. 1259-1278.
  7. Theory of Te Precipitation and related effects in CdTe Crystals, R D S Yadava, R K Bagai, W N Borle, Journal of Electronic Materials 21, 1992, pp.1001-1015.
  8. A finite fractal cluster theory of 1/f noise in percolation systems near metal-insulator transition, R D S Yadava, Z. Physik B: Condensed Matter, vol. 76, 1989, pp. 365-374.
  9. Electrostatic charging of a fractal metallic cluster and variable range hopping conductivity in thin discontinuous metal films, R D S Yadava, Journal of Physics: Condensed Matter, vol. 1, 1989, 7245-7249.
  10. The bubble coalescence model of radiation blistering R D S Yadava, Journal of Nuclear Materials, vol. 98, 1981, pp. 47-62.
Full List of Publications:
(A. Chemical Sensors, Electronic Nose, Pattern Recognition, Machine Intelligence, SAW Signal Processing Devices and Systems)
  1. Simulation and Information Processing Approach for Development of Polymeric Electronic Noses. R.D.S.Yadava (Book Chapter, 2012, in press).
  2. Synchronization based SAW sensor using delay line coupled dual oscillator phase dynamics. Shashank. S. Jha, R.D.S.Yadava. Sensors & Transducers J. vol. 141, Issue 6, June 2012, pp. 71-91.
  3. A data enrichment and information fusion approach for enhancing chemical identification efficiency based on SAW sensor transients, P. Singh, R.D.S.Yadava. Jpn. J. Applied Physics (in press).
  4. Enhancing sensor array intelligence through Bayesian fusion of multiple feature extraction and radial basis function neural network combinations. Prabha Verma, R.D.S.Yadava. (2012, to be published).
  5. Novel information generation and fusion approaches for chemical identification by SAW sensor transients. Prashant Singh, R.D.S.Yadava. (2012, to be published).
  6. Data mining approach to polymer selection for making SAW sensor array based electronic nose. Sunil K. Jha, R.D.S.Yadava. (2012, to be published).
  7. Neuro, fuzzy and neuro�fuzzy approach for concentration estimation of volatile organic chemicals by SAW sensor array electronic nose. Sunil K. Jha, R.D.S.Yadava. (2012, to be published).
  8. Fuzzy c-means clustering based uncertainty measure for sample weighting boosts pattern classification efficiency. Prabha Verma, R.D.S.Yadava. IEEE Conf. on Computational Intelligence and Signal Processing, IEEE CISP-2012, pp.31-35.
  9. Discrete wavelet transform and principal component analysis based vapor discrimination by optimizing sense and purge cycle duration of SAW chemical sensor transients. Prashant Singh, R.D.S.Yadava. IEEE Conf. on Computational Intelligence and Signal Processing, IEEE CISP-2012, pp. 71-75.
  10. Wavelet based fuzzy inference system for simultaneous identification and quantitation of volatile organic compounds based on SAW sensor transients. Prashant Singh, R.D.S.Yadava. Swarm, Evolutionary and Memetic Computing, SEMCCO-2011, Part-II, LNCS vol. 7077, 2011, pp. 319-327, Springer-Verlag.
  11. Effect of film thickness and viscoelasticity on separability of vapor classes by wavelet and PCA analyses of polymer coated SAW sensor transients. Prashant Singh, R.D.S.Yadava. Meas. Sci. Technol. vol. 22, 2011, 025202 (15pp).
  12. Transient feature extraction based on phase space fusion by partial-least-square regression analysis of sensor array signals. Prashant Singh, R.D.S.Yadava. IEEE Conf. on Emerging Trends in Electrical and Computer Technology, IEEE ICETECT-2011, pp. 676-680.
  13. A fusion approach to feature extraction by wavelet decomposition and principal component analysis in transient signal processing of SAW odor sensor array. Prashant Singh, R.D.S.Yadava. Sensors & Transducers J. vol. 126, no. 3, 2011, 64-73.
  14. Designing optimal model SAW sensor array electronic nose for body odor discrimination. Sunil K. Jha, R.D.S.Yadava. Sensors Lett. vol. 9, no. 5, 2011, 1612-1622.
  15. Denoising by singular value decomposition and electronic nose data processing. Sunil K. Jha, R.D.S.Yadava. IEEE Sensors J. vol. 11, no.1, 2011, pp. 35-43.
  16. Detection of outliers in surface acoustic wave (SAW) chemical sensor array responses by one-class support vector machine. Sunil K. Jha, R.D.S.Yadava. Proc. IEEE Conf. on Recent Advances in Intelligent Computational Systems, IEEE RAICS-2011, Sept 22-24, 2011, pp. 896-901.
  17. Application of fuzzy inference system based on fuzzy subtractive clustering for quantitative recognition in electronic nose systems. Sunil K. Jha, R.D.S. Yadava. Proc. NSPTS-16 (Lucknow) Journal of Science, vol. 8, no.1, 2011,309-313.
  18. On genetic algorithm and multiple preprocessors assisted feature boosting for electronic nose signal processing. Prabha Verma, Divya Somvanshi, R.D.S.Yadava. Int. J. Computational Intelligence Research vol. 7, no. 3, 2011, 271-294.
  19. Genetic algorithm assisted enhancement in pattern recognition efficiency of radial basis neural network. Prabha Verma, R.D.S.Yadava. Swarm, Evolutionary and Memetic Computing, SEMCCO 2011 Proceedings, Part I, LNCS vol. 7076, 2011, pp. 257-264. Springer-Verlag.
  20. Information fusion based on multiplicity of data pre-processing boosts the AdaBoost classifier. Divya Somvanshi, R.D.S.Yadava. Int. J. Computational Intelligence Research vol. 7, no. 2, 2011, 169-180.
  21. Evidence generation for Dempster-Shafer fusion using feature extraction multiplicity and radial basis network. Prabha Verma, R.D.S.Yadava. Proc. IEEE Conf. on Emerging Trends in Electrical and Computer Technology, IEEE ICETECT-2011, Mar 23-24, 2011, pp. 542-545.
  22. Statistical pattern analysis assisted selection of polymers for odor sensor array?electronic nose for human body odor detection. Sunil K. Jha, R.D.S. Yadava. Proc. IEEE Conf. Signal Processing, Communication, Computing and Network Technologies, IEEE ICSCCN-2011, pp.575-580.
  23. Viscoelastic effects in polymer coated SAW sensors � boon or bane? Prashant Singh, R.D.S.Yadava. Proceedings NSPTS-16 (Lucknow) Journal of Science, vol. 8, no.1, 2011, 368-373.
  24. Power scaling of chemiresistive sensor array data for odor classification. Sunil K. Jha, R.D.S.Yadava. J. Pattern Recognition Research, vol. 1, 2011, 65-74.
  25. Performance assessment of PCA, MF and SVD methods for denoising in chemical sensor array based electronic nose system. Sunil K. Jha, R.D.S. Yadava. Sensors and Transducers J., vol. 129, no. 6, 2011, 57-68.
  26. Sensor array intelligence by Bayesian fusion of information generated by radial basis neural network in combination with multiple feature extraction methods. Prabha Verma, R.D.S. Yadava. Proc. NSPTS-16 (Lucknow) Journal of Science, vol. 8, no.1, 2011, 347-351.
  27. Modeling the electrical response of polymer-coated SAW resonators using equivalent circuit based on COM theory. R. Kshetrimayum, R.D.S. Yadava, R. P. Tandon. Ultrasonics, vol. 51, 2011, 547�553.
  28. Synchronization of two coupled nonlinear surface-acoustic-wave (SAW) oscillators. Shashank S. Jha, R.D.S. Yadava. Proc. 6th National Conf. Nonlinear Systems & Dynamics, Jan 27-30, 2011, Trichy.
  29. Coupled nonlinear surface acoustic wave oscillator system � a novel sensor configuration. Shashank S. Jha, R. D. S. Yadava. 19th IEEE Workshop on Nonlinear Dynamics of Electronic Systems, Mar 9-11, 2011, Kolkata.
  30. A novel SAW sensor configuration based on synchronization coupling of two oscillator system, Shashank S. Jha, R.D.S.Yadava, Proc. NSPTS-16 (Lucknow) Journal of Science, vol. 8, no. 1, 2011, pp. 78-82.
  31. Stochastic resonance in polymer coated SAW sensors induced by nonlinear viscoelastic effects. Vivek K. Verma, R.D.S.Yadava. Proc. NSPTS-16 (Lucknow) Journal of Science, vol. 8, no. 1, 2011, pp. 352-359.
  32. Using parametric nonlinearity in SAW sensor transients and Information Fusion for improving electronic nose intelligence. Prashant Singh, R.D.S. Yadava. Int. J. Computational Intelligence Research, vol. 6, no. 4, 2010, 919-927.
  33. Development of surface acoustic wave electronic nose using pattern recognition system. Sunil K. Jha, R.D.S.Yadava, Defence Science J. vol. 60, no. 4, 2010, 364-376.
  34. Feature extraction by wavelet decomposition of surface acoustic wave (SAW) sensor array transients. Prashant Singh, R.D.S.Yadava, Defence Science J. vol. 60, no. 4, 2010, 377-386.
  35. Boosting Principal Component Analysis by Genetic Algorithm. Divya Somvanshi, R.D.S.Yadava. Defence Science J. vol. 60, no. 4, 2010, 392-398.
  36. Pattern recognition methods for SAW sensor array based electronic nose. Sunil K. Jha, R.D.S.Yadava. Proc. IEEE Conf. Computational Intelligence and Computing Research, IEEE ICCIC-2010, pp. 273-276.
  37. Quality control of herbal medicines by using spectroscopic techniques and multivariate statistical analysis, pharmaceutical biology. S.K. Singh, S.K. Jha, A. Chaudhary, R.D.S. Yadava, S.B. Rai. Pharmaceutical Biology vol. 48, no. 2, 2010, 134-141.
  38. Preprocessing of SAW sensor array data and pattern recognition. Sunil K. Jha, R.D.S. Yadava, IEEE Sensors J. vol. 9, no. 10, 2009, 1202-1208.
  39. Multifrequency characterization of viscoelastic polymers and vapor sensing based on SAW oscillators. R.D.S.Yadava, R.Kshetrimayum, Mamta Khaneja, Ultrasonics vol. 49, 2009, 638-645.
  40. Mass sensitivity analysis and designing of surface acoustic wave resonators for chemical sensors. R. Kshetrimayum, R.D.S.Yadava, R.P.Tandon, Meas. Sci. Technol. vol. 20, 2009, 055201 (10pp).
  41. SAW interdigital transducer designs for multiple frequency oscillators and sensors. R. Kshetrimayum, Mamta Khaneja, R.P.Tandon, R.D.S.Yadava. 14th National Symposium on Ultrasonics, Feb 16-18, 2006, New Delhi. J. Pure and Applied Ultrasonics vol. 29, no. 1, 2007, 46-53.
  42. Solvation, transduction and independent component analysis for pattern recognition in SAW electronic nose. R.D.S.Yadava, Ruchi Chaudhary. Sens. Actuators B 113, 2006, 1-21.
  43. Enhancing mass sensitivity of SAW delay line sensors by chirping transducers. R.D.S.Yadava. Sens. Actuators B 114, 2006, 127-131.
  44. A comparative analysis of one-port Colpitts and two-port Pierce SAW oscillators for DMMP vapor sensing. A.T.Nimal, M.Singh, U.Mittal, R.D.S.Yadava. Sens. Actuators B vol. 114, 2006, 316�325.
  45. Piezoelectric crystals for surface acoustic wave (SAW) devices and sensors applications. R Kshetrimayum, R P Tandon, R.D.S.Yadava. Advances in Technologically Important Crystals, eds. B. Kumar and R. P. Tandon. Macmillan, Delhi, 2006, pp. 385-390.
  46. Acoustic wave immunosensing of Escherichia Coli in water. D.Deobagkar, V.Limaye, Sweta Sinha, R.D.S.Yadava. Sens. Actuators B vol. 104, 2005, 85-89.
  47. Adsorption studies of carbowax coated surface acoustic wave (SAW) sensor for 2,4-dinitro toluene (DNT) vapor detection. G.K.Kannan, A.T.Nimal, U.Mittal, R.D.S.Yadava, J.C.Kapoor. Sens. Actuators B vol. 101, 2004, 328-334.
  48. Detection of landmine signature using SAW based polymer-coated chemical sensor. G.K.Kannan, R.Bhalla, J.C.Kapoor, A.T.Nimal, U.Mittal, R.D.S.Yadava. Defence Science J. vol. 54, no. 3, 2004, 309-315.
  49. SAW sensors based electronic nose- a technology assessment from the perspective of indigenous development. R D S Yadava. DRDO Workshop on NBC Materials and Sensors (DRDE Gwalior, 27-28 Jan 2003).
  50. Design and development of a SAW chemical sensor system. A T Nimal, U Mittal, M Singh, M Khaneja and R D S Yadava, DRDO Workshop on NBC Materials and Sensors (DRDE Gwalior, 27-28 Jan 2003).
  51. A SAW based biosensor for detection of potability of water. D.Deobagkar, V.Limaye, R.D.S.Yadava, Sweta Sinha, A.T.Nimal, U.Mittal. Seventh World Congress on Biosensors (Kyoto, Japan, 15-17 May 2002), P I 2.53.
  52. Development of surface acoustic wave based TNT sensor using poly (dimethyl) siloxane as chemical interface. G.K.Kannan, B.Rashmi, J.C.Kapoor, A.T.Nimal, U.Mittal. R.D.S.Yadava. Proc. National Conference on Sensor Technology, CFEES, Delhi, Sept 26-27, 2002, pp. 185-189.
  53. SAW sensor technology for detection of CW agents � an appraisal. R.D.S.Yadava. Proc. 8th National Seminar on Physics and Technology of Sensors (NSPTS-8), Kalpakkam, Feb 27�Mar 01, 2001, pp. I-12.1-12.7.
  54. Optimizing transducer design for SAW chemical and biological sensors. Mamta Khaneja, R.D.S.Yadava. Proc. 8 th National Seminar on Physics and Technology of Sensors (NSPTS-8), Kalpakkam, Feb 27�Mar 01, 2001, pp. C-36.1-36.4.
  55. Development of a microcontroller based SAW chemical sensor. A.T.Nimal, U.Mittal, R.D.S.Yadava. Proc. 8 th National Seminar on Physics and Technology of Sensors (NSPTS-8), Kalpakkam, Feb 27�Mar 01, 2001, pp. C-71.1-71.3.
  56. Realizing chemical sensors using SAW delay lines. A.T.Nimal, U.Mittal, R.D.S.Yadava. Proc. 7th National Seminar on Physics and Technology of Sensors (NSPTS-7), Pune, Feb 14-16, 2000, pp. C-23.1-23.5.
  57. An acoustic wave bio-sensor for detection of potability of water. S Sinha, A T Nimal, U Mittal, R D S Yadava, V Limaye and D Deobagkar. Proc.7-th National Seminar on Physics and Technology of Sensors, Pune, Feb 14-16, 2000, pp. C-39.1-39.6.
  58. Analysis of design and compensation methods for suppression of sidelobes in SAW pulse compression filters. R.D.S.Yadava, Mamta Khaneja. Proc. International Radar Symposium (IRS India�99), Bangalore, Dec 14-17, 1999, pp. 408-417.
  59. Performance sensitivity of SAW band pass filters on fabricational errors. Mamta Khaneja, R.D.S.Yadava. Proc. International Radar Symposium (IRS India�99), Bangalore, Dec 14-17, 1999, pp. 386-397.
  60. On the adaptation of Remez exchange algorithm for the design of linear phase SAW filters. Mamta Khaneja, R.D.S.Yadava. Proc. Int. Conference and Exhibition on Ultrasonics (New Delhi, 2-4 Dec 1999), pp. 168-71.
  61. Utilizing surface skimming bulk waves for detection of E-coli in water. Sweta Sinha, U.Mittal, A.T.Nimal, R.D.S.Yadava, Veena Limaye, Deepti Deobagkar. Proc. Int. Conference and Exhibition on Ultrasonics (New Delhi, 2-4 Dec1999), pp.156-159.
  62. Portable surface acoustic wave sensor for detection of SO2 in vapor phase. A.T.Nimal, Sweta Sinha, U.Mittal, R.D.S.Yadava. Proc. Int. Conference and Exhibition on Ultrasonics (New Delhi, 2-4 Dec1999), pp. 160-163.
  63. A comparative study of FM pulse compression techniques based on digital and SAW devices. Manisha Mittal, A.T.Nimal, R.D.S.Yadava. Proc. Int. Conference and Exhibition on Ultrasonics (New Delhi, 2-4 Dec1999), pp. 164-167.
  64. SAW based techniques for smart chemical sensing and identification. R D S Yadava. International Workshop on Smart Materials, tructures and Systems (Banglore, Dec.1998).
  65. Matched SAW chirp filters for pulse compression radars. R.D.S.Yadava. Mamta Batra, P.C.Nagpal. Proc. National Symposium on Recent Advances in Microwaves and Lightwaves (New Delhi, Dec. 1995), pp. 319-325.
(B. R & D Project Reports, CEP Courses, Workshops)
  1. Development of Data Fusion Models and Algorithms for Molecular Recognition in Polymeric Sensor Platforms. R D S Yadava (Principal investigator), Banaras Hindu University, Varanasi. Defence R&D Project No. ERIP/ER/ 0703643/M/01/1025 Dec 14, 2007.
  2. Feasibility Study for Development of Electronic Nose Technology. R D S Yadava (Principal investigator), Banaras Hindu University, Varanasi. DST Project No. DST/TSG/PT/2007/06 Sept 18, 2007.
  3. Proceedings of 5 Days CEP Course on "Advanced Sensor Technologies". R D S Yadava (coordinator), Solid State Physics Laboratory, Delhi, Feb 9-13, 2004.
  4. Development of High Sensitivity Microsensors based on Surface Acoustic Wave (SAW) Devices for Detection of Chemical Warfare Agents and Explosives. R D S Yadava (coordinator), Solid State Physics Laboratory, Defence R&D Organization, Delhi, Project Report No. SSPL-164-R-2003.
  5. Design, Development and Production of Surface Acoustic Wave (SAW) Devices and Subsystems for Commercial and Strategic Applications. Sponsor: DoE, Govt. of India; Execution: R D S Yadava (coordinator), Solid State Physics Laboratory, Defence R&D Organization, Delhi, Project Report No. SSPL-161-R-2002.
  6. Studies towards Development of Surface acoustic Wave (SAW) Biosensors. R D S Yadava (coordinator), Solid State Physics Laboratory, Defence R&D Organization, Delhi, Report No. SSPL-162-R-2002.
  7. Development of advanced SAW technology for signal processing and environment monitoring. Sponsor: DST under Indo-Russia ILTP, Code: INT/ILTP/A-2(b).15, Oct 2002.
  8. SAW Technology Mission document on "Surface Acoustic Wave (SAW) Devices ? an Overview and Applications in Strategic and Civilian Sectors". Brought out jointly by SSPL (R D S Yadava) Delhi, BEL Bangalore, ITI Bangalore, IIT Delhi and DoE (now) MIT New Delhi (1998).
  9. Proceedings of 5 Days Workshop on "SAW Devices - Physics, Technology and Applications". R D S Yadava (coordinator), 7-11 July 1997, held at SSPL Delhi.
(C. Semiconductor Materials, Devices, Fractals, Percolation)
  1. Hole scattering mechanisms in Hg1-xCdxTe. R D S Yadava, A K Gupta, A V R Warrier. J. Electron. Materials vol. 23, no. 12, 1994, 1259-1278.
  2. Precipitation in CdTe crystals studied through Mie scattering. R D S Yadava, B S Sundersheshu, M Anandan, R K Bagai, W N Borle. J. Electron. Materials vol. 23, no. 12, 1994, 1349-1357.
  3. Expression for intrinsic carrier concentration in Hg1-xCdxTe. R D S Yadava. Solid State Commun. vol. 92, no. 4. 1994, 357-360.
  4. A study on contaminations during bulk growth of CdTe crystals. R K Bagai, R D S Yadava, B S Sundersheshu, G L Seth, M Anandan, W N Borle. J. Crystal Growth vol. 139, 1994, 259-265.
  5. Theory of Te Precipitation and related effects in CdTe Crystals. R D S Yadava, R K Bagai, W N Borle. J. Electronic Materials vol. 21, no. 10, 1992, 1001-1015.
  6. Anodic polarization of HgTe, CdTe and Hg0.8Cd0.2Te� oxide formation kinetics and composition. R D S Yadava, A V R Warrier. J. Materials Science vol. 26, 1991, 423-428.
  7. On the nature of alloying in HgTe-CdTe solid solutions at low temperature from electrode potential measurements. R D S Yadava, AVR Warrier. Solid State Commun. vol. 78, no. 5, 1991, 449-453.
  8. Scaling characteristic of ac conductivity and dielectric function in fractal regime of the metal-insulator transition. R D S Yadava. Z. Physik B: Condensed Matter 86 (1992) 93-99.
  9. A finite fractal cluster theory of 1/f noise in percolation systems near metal-insulator transition. R D S Yadava. Z. Physik B: Condensed Matter 76 (1989) 365-374.
  10. Electrostatic charging of a fractal metallic cluster and variable range hopping conductivity in thin discontinuous metal films. R D S Yadava. J. Physics.: Condensed Matter 1 (1989) 7245-7249.
  11. Scaling size distribution of oxide defects, trema-fractal oxide layer and breakdown statistics of metal-oxide semiconductor devices. R D S Yadava, Applied Physics Letters vol. 54, no. 9, 1989, 834-836.
  12. Fractal nature of defect clustering in gate oxides of MOS devices. R D S Yadava, R K Bhan. J. Electrochemical Society vol. 136, no. 3, 1989, 889-890.
  13. Searching a fractal basis for low frequency 1/f fluctuations � MOSFET structure in case. R D S Yadava. Jpn. J. Applied Physics vol. 28, no. 5, 1989, 929-940.
  14. Analytic approach to the ac conductance method for rapid characterization of interface states in MOS structures. R.D.S.Yadava. Solid State Electronics vol. 33, no. 1, 1990, 127-137.
  15. Donor-like localization and activated conduction in compensated n-Hg0.8Cd0.2Te. R D S Yadava, A V R Warrier. J. Electronic Materials vol. 18, no. 4, 1989, 537-541.
  16. Grain growth mechanism during recrystallization of a tellurium-rich Hg1-xCdxTe cast. R D S Yadava, S Sinha, A V R Warrier. J. Crystal Growth vol. 73, 1985, 343-349.
  17. Development of mercury-cadmium-telluride for infrared detectors. B B Sharma and R D S Yadava. Technical Report No. SPL 83 U1/SPL-69.
  18. Electron probe microanalysis of Hg1-xCdxTe by wavelength dispersive spectrometry. R D S Yadava, R K Sharma, B B Sharma, M Vijaykumar and P C Angelo. Proc. Conf. Compound Semiconductors and Related Technologies (IIT Madras, 21-23 Sept 1983), eds. P R Vaya and J Sobhanadri, pp. 132-144.
  19. Photoconductive HgCdTe infrared detectors in 8�14 �m region. R D S Yadava, Nisha Chabbra, Harjeet Kaur, Geeta Mohan, R K Madaria, B B Sharma, A V R Warrier. Proc. Conf. Compound Semiconductors and Related Technologies (IIT Madras, 21-23 Sept 1983), eds. P R Vaya and J Sobhanadri, pp.185-202.
  20. Infrared detector quality mercury-cadmium-telluride crystal growth and evaluation. R D S Yadava and B B Sharma. Proc. Int. Conf. Physics of Semiconductor Devices (Delhi, Dec.1981), pp. 216-18. 52.

(D. Ion Irradiation, Radiation Damage, Blistering)
  1. Role of ion beam heating in blistering behavior of solids. R D S Yadava. Radiation Effects 63 (1982) 231-236.
  2. The bubble coalescence model of radiation blistering. R D S Yadava. J. Nuclear Materials 98 (1981) 47-62.
  3. Effect of hydrogen bombardment on Ni40Fe6Co20Cr12Mo6B16 amorphous alloy. R D S Yadava, N I Singh and A K Nigam. J. Nuclear Materials 102 (1981) 109-116.
  4. Proton irradiation effects in Fe40Ni40P14B6 metallic glass :blistering. R D S Yadava, N I Singh, A K Nigam, V Singh. J. Nuclear Materials 92 (1980) 366-70.
  5. High fluence hydrogen implantation in copper: blistering and grain boundary movement. R D S Yadava, N I Singh, A K Nigam. Radiation Effects 51 (1980) 233-240.
  6. Sponge-like blisters on copper by H+-ion implantation at ambient temperatures. R D S Yadava, N I Singh, A K Nigam. J. Phys. D: Applied Physics 13 (1980) 2077-2080.
  7. Experimental evidence for stress-induced blister formation. R D S Yadava, N I Singh, A K Nigam. J. Nuclear Materials 92 (1980) 371-374.
  8. Surface behavior of metallic glass following hydrogen implantations. R D S Yadava, V Singh. Proc. Symp. Vac. Tech. Metallurgical Applications. (Hyderabad, 1981), pp.27/1-5.
  9. Laser�induced surface alloy formation and diffusion of antimony in aluminum. A K Jain, V N Kulkarni, D K Sood, M Sundararaman, R D S Yadava. Nuclear Instruments and Methods 168 (1980) 275-282.
  10. Evaporation loss and diffusion of antimony in silicon under pulsed laser irradiation. A K Jain, V N Kulkarni, D K Sood, M Sundararaman, R D S Yadava. Nuclear Instruments and Methods 168 (1980) 473-477.

(E. Unpublished)
  1. Development of a miniaturized air sampler for portable SAW electronic nose based on differential adsorbent scrubbing. D. Barlewar, U. Mittal, R D S Yadava.
  2. A review of design methodologies for surface acoustic wave filters. R D S Yadava.
  3. Piezoelectric materials for SAW devices � issues and status. R D S Yadava.
  4. EMI effects and signal distortion in simultaneously running SAW multioscillator system on a single board for electronic nose applications. R D S Yadava, U. Mittal, D. Barlewar, Mamta Khaneja
  5. Surface acoustic wave devices and sensors. R D S Yadava.
  6. Cr-contacts on n-type HgCdTe � a mixed phase model and size effects. R D S Yadava, Anita Sharma, A V R Warrier.
  7. Self-organisation, fractality and 1/f noise in percolation systems. R D S Yadava.
  8. Optical absorption in Hg1-xCdxTe crystals below fundamental edge. R D S Yadava, A K Gupta.
  9. Ternary phase diagram for HgTe-CdTe-Te system. R D S Yadava.
  10. Radiation induced shrinkage of void swelling. R D S Yadava.
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