Dr. N.P. Rajesh

Email id : rajeshnp@snuchennai.edu.in

Dr. N.P. Rajesh,

An alumni of Anna University has over 22 years of experience in crystal growth with over 120 international publications, 90 conference papers and 14 students completed their Doctoral degree under his supervision to add feather to his credit. He has extensive experience on the synthesis of organic inorganic & semi-organic materials, crystal growth, instrumentation for crystal growth, material characterization and device fabrication. He has been the collaborative research member in two projects abroad, one on “Materials for Information Technology and Environment” at Aichi Institute of Technology and another on “Fabrication of Semiconductor Optoelectronic Devices” at National Tsing Hua University, Taiwan. His group focuses research on the crystal growth of efficient detector and optical materials in organic, semiorganic & inorganic materials by using Bridgman, Czochralski, top seed solution growth and low temperature solution growth techniques. His group achieved the FWHM of 2.7 arc-sec for KDP crystals with modified growth parameters and attested by National Physical Laboratory, New Delhi. His group is working on the investigations on the crystal growth by top seed solution growth and its electrical and optical properties of pure and rare earth (Ln, Yb, Er, Ho, Mn) doped KTP and RTP (Nd doped and pure) single crystals for electro optic applications. The Ln doped KTP single crystal gives better transmission and less gray tracking defect during the process.

His team developed an automatic crystal translation system (ACTS) for smooth translation movements in vertical Bridgman method using National Instruments myRIO-1900 module and its integrated firmware and a graphical user interface (GUI) was developed using LabVIEW2015 software and linear actuators for smooth operation. Using this system, CsI single crystals grown with the addition of Tl, Eu, Ce and Er are under investigation for its scintillation capacity and fabrication of radiation detectors. A stepper-motor based remotely operated Automatic Crystal Puller System (ACPS) was developed for cost-effective, ease of maintenance and high precision in growing single crystals of low growth rate for high-quality crystal growth applications using Czochralski growth. The ACPS system consists of a high precision mechanical translation and rotation assembly coupled to translation and rotation stepper motors operating in micro-stepping mode. The system has a programmable bidirectional rotation speed ranging from 0.01–59.99 rpm and translational motion ranging from 0.001–99.99 mm/h with a translation resolution of 20nm. Performance evaluation of the system is carried out by growing KCl single crystals using the system and the crystal quality was valuated.


Educational Qualifications

MSc Physics – Manonmaniam Sundaranar University, Thirunelvel 1995

PhD Crystal Growth – Crystal Growth Center, Anna University, Chennai 2004

Work Experience

• 2000-2001 – Junior Scientific Officer, DAE-National Laser Program, Anna University
• 2001-2002- Visiting Scholar, National Tsing Hua University, Taiwan
• 2003-2004 – Lecturer, AKCE, Krishnankoil
• 2004-2018 – Assistant Professor, SSN College of Engineering, Kalavakkam
• 2018-2021 – Associate Professor in Department of Physics, Head SSN CREST, SSN College of Engineering, Kalavakkam
• 2021- Associate Professor in School of Science and Humanities, Head SSN CREST, Shiv Nadar University, Kalavakkam

Research Areas

• Materials Science
• Crystal Growth
• Ceramics
• Nanomaterials
• Electronic Materials

Courses Taught
Engineering Physics

Physics of Materials

List of Conferences / Seminars / FDP / ISTE-STTP organized:

• Coordinator, ISTE-STTP program on Recent Trends in Crystal Growth at AK College of Engineering (2004)
• Coordinator, International Work shop on Advances in materials science and technology in SSN College of Engineering (2005)
• Convener, Second National Symposium on crystal growth of laser related materials in SSN College of Engineering (2005)
• Convener, Second National Conference on Crystal Growth (in Tamil) in SSN College of Engineering (2005)
• Coordinator, Workshop on recent trends in crystal growth and characterization in SSN College of Engineering, Sponsored by Tamil Nadu State Council for Science and Technology (2005)
• Convener,International Workshop on Photonic Materials on 9-11 February 2012 with 5 Professors from Taiwan along with Indian Scientists (2012)
• Convener, Workshop on Mathematical Approach to Physical Sciences, Feb 14,15 2013
• Director, DST-SERC-School on Nonlinear optics and materials February 3-21,2014
• Convener, National Workshop on Radiological Aspects of Fly Ash and Environmental Radioactivity” during 18-20 September 2014
• Director, DST-SERC-School on Functional materials and its applications 2-22 September 2015
• Convener, Pre-Conference course on Quantitative Infrared Thermography 6th July 2015 Organized by Indian Society of Non-Destructive Testing and International union of QIRT
• Director, DST-SERC-School on Radiation Detector Material and its applications 23 August-12 September 2017
• Convener, Workshop on “Advances in Radiation Monitoring & Environmental Technology (ARMET-2017), 27-28 March 2017

Membership in Professional Bodies:

• Life Fellow, Optical Society of India (OSI)
• Life Fellow, The Academy of Sciences, Chennai
• Life Member, Indian Laser Association (ILA)
• Member, Indian Society for NDT (ISNDT)
• Life Member, Indian Science Congress Association (ISCA)
• Life Member, Indian Association for Crystal Growth(IACG).
• Life Member, Indian Society for Technical Education(ISTE)

Honors and Awards Received:

• Treasurer, Indian Science Congress Association (ISCA) Chennai-Chapter (2003-2009)
• DAIKO Foundation Research Fellowship to visit Japan and do research in Organic solar cells and Thin film transistors (2007)
• AICTE Career Award for Young Teachers (CAYT) in Rs. 105000/- by All India Council for Technical Education, India (2004-2005)
• Young Scientist Award in Japanese Yen 60000 by International Organization for Crystal Growth, Japan (2001)
• COSTED travel fellowship (2001) to visit Japan and Taiwan
• DST travel fellowship (2001) to visit Japan and Taiwan
• DST travel fellowship (2010) to Visit China
• Visiting Researcher Fellowship, National Tsing Hua Univeristy, Taiwan (2011)
• Adarsh Vidya Saraswati Rashtriya Puraskar award by Global Management Council 2017
• Outstanding Reviewer Award 2022, Journal of Materials Science: Materials in Electronics, Springer, USA

Scholarly Activity :

Projects :

Title: Fabrication of periodically poled structures using pure and rare earth doped KTP and RTP single crystals by flux grown method for nonlinear optical applications

Funding Agency: Department of Science and Technology -Science and Engineering Research Board

Investigator: Dr. N. P. Rajesh

Status : On processing

Amount : Rs. 36 lakhs

Duration : 2022 – 2025.

Title: Development of Piezoelectric and scintillation crystals using high temperature method.

Funding Agency: Animotronex Technologies Private Ltd, Chennai.
Investigator: Dr. N. P. Rajesh

Status: On processing

Amount: Rs. 11 lakhs

Duration: 2022 – 2023.

Title: Development of GPS based comprehensive mobile App for Water Quality Assessment Monitoring for promoting water security, farm security, urban development and civic improvement.

Funding Agency: Department of Science and Technology – State S&T Programme(SSTP)

Investigator: Dr. N. P. Rajesh

Status: On processing

Amount: Rs. 49,99,000/-

Duration: 2019 – 2022.

Title: Investigations on the electrical and optical properties of pure and rare earth doped Rubidium Titanyl Phosphate single crystals.

Funding Agency: Council of Scientific and Industrial Research

Investigator: Dr. N. P. Rajesh

Status: On processing

Amount: Rs. 25,00,000/-

Duration: 2017 – 2020.

Title: Investigations on rare-earth doped CsI single crystals for scintillation applications.

Funding Agency: Department of Science and Technology.

Investigator: Dr. N. P. Rajesh

Status: Ongoing (PI).

Amount: Rs.24,35,373/-

Duration: 2017 – 2020.

Title: Development of PMN-PT single crystal for under water applications.

Funding Agency: Department of Science and Technology.

Investigator:Dr. N. P. Rajesh

Status: Completed.

Amount: Rs.35,50,000/-
Duration: 2013 – 2016.

Title: Crystal Growth and Characterisation of KTP single crystals for EO applications.

Funding Agency: Department of Science and Technology.

Investigator:Dr. N. P. Rajesh

Status: Completed.

Amount: Rs.19,77,000/-

Duration: 2010 – 2013.

Title: Investigations on the crystal growth and nonlinear optical properties of organic and semiorganic crystals.

Funding Agency: Department of Science and Technology.
Investigator: Dr. N. P. Rajesh
Status:Completed.

Amount: Rs. 6,00,000/-

Duration: 2006 – 2009.

Title: Investigations on the crystal growth and nonlinear optical properties of organic and semiorganic crystals.

Funding Agency: Department of Science and Technology.

Investigator: Dr. N. P. Rajesh

Status: Completed.

Amount: Rs. 6,00,000/-

Duration: 2006 – 2009.

Title: Growth and device fabrication of lithium niobate single crystals.

Funding Agency: SSN Educational and charitable trust.

Investigator: Dr. N. P. Rajesh

Status: Completed.
Amount: Rs.1,50,000/-
Duration: 2006 – 2008.