Physics

Achievements & Participation 2019/20

Dr. Gowrishankar R
Resource person, Workshop on Effective Teaching Approach to Applied/Engineering Physics, Jawaharlal Nehru Technological University (JNTU), Anantapur, Andhra Pradesh, 5-7 Aug 2019.

External Examiner, Practical Examination for M.Sc. in Electronics and Communications, Dept. of Electronics, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, 5-6 Dec 2019.

Dr. Murali Ravi 
Product Patent filed. CBR Number: 29859 “Small Area Imaging Gamma Camera”
This IP covers all the details of the developed Small field of View Gamma Camera which has the capability to image the organ of interest in Sitting Supine and Lying Supine orientations. 

Dr. (Mrs.) Vedavathi Aluri
Completed an online certification course on Udemy, Python for Data Science and Machine Learning Boot-camp.

Attended a workshop on Characterization Techniques, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh, 7 Dec 2019.

Attended a virtual Faculty Development Programme on Managing Online Classes and co-creating Massive Open Online Courses (MOOCs) 2.0, Teaching Learning College, Ramanujan College (University of Delhi), 18 May – 1 Jun 2020.

Prof. S Siva Sankara Sai 
Attended the IEEE International Conference on Advanced Networks and Telecommunications Systems (IEEE-ANTS-2019), Goa, 16-19 Dec 2019.

Dr. (Miss) Deepa Seetharaman
Attended a workshop on Characterization Techniques, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh, 7 Dec 2019.

Attended a hands-on training course on Calibration, maintenance and use of Simultaneous TGA/DSC Analyzer, TA Instruments Division, Bangalore, 17 Feb 2020.

Dr. (Mrs.) C Prathibha
Attended a workshop on Characterization Techniques, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh, 7 Dec 2019.

Attended an Elsevier Webinar on Improving Research Planning Skills, Technical Institute, 28 Apr 2020.

Dr. V Sai Muthukumar
Participated in a virtual event on Biophotonics Congress: Biomedical Optics, Optical Society of America, 20-23 April 2020. 

Achievements & Participation 2019/20

Miss Anjana Biswas
Attended a workshop on Characterization Techniques, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh, 7 Dec 2019.

Miss Susshma N
Course on Gamma Ray Spectroscopy, UGC-DAE CSR, Kolkata Centre, Kolkata, West Bengal, 2-13 December, 2019.

Achievements 2019/20

Organizational Visits
At the end of each academic year, final year graduating students from various departments go on official visits to reputed organizations to get a feel of how what they learn in the classroom is applied in the real world. Students are accompanied by a few faculty members on these trips. During the academic year 2019/20, these included:

M.Sc. in Physics and M.Tech. in Optoelectronics & Communications Students, 10 Feb 2020.
Organizations visited: Geological Survey of India (GSI), Sri Sathya Sai Airport, Puttaparthi

Projects & Dissertations
Listed below are the postgraduate and professional programme projects and dissertations for the academic year 2018/19:

SSSIHL Projects & Dissertations – 2019/20 – M.Sc. in Physics | M.Tech. in Optoelectronics & Communications

National Examinations
A high percentage of SSSIHL postgraduate students qualified in national exams such as the GATE/JEST or the CSIR-UGC NET in 2018/19. The list below includes the national rank for each exam (if available):

GATE
Mahendrakar Vaibhav (Physics) – 261
R Sai Santhosh (Physics) – 587
M Venkatesh Prasad Sagar (Physics) – 798
Sai Krishna N (Physics) – 1221
Malhar Anupam Nagar (Physics) – 1361
Josyula Sai Prashanth (Physics) – 1610
Nithishkumar C V (Physics) – 1928
Damagatla Sai Vamshi Krishna (Physics)
Ankush Kumar Gupta (Physics) – 3730

JEST
Mahendrakar Vaibhav (Physics) – 11

To access the Research Areas for the department, click here.

Publications 2019/20

Abishek H, Chelli Sai Manohar, V Sai Muthukumar, B Siva Kumar, Maurizio Ferrari, K N Naresh, Krishna Chaitanya V, Paper-microfluidics based SERS substrate for PPB level detection of Catechol, Optical Materials, 94, 305-310, (2019). DOI: https://doi.org/10.1016/j.optmat.2019.05.041

Aditya Dileep Kurdekar, Chelli Sai Manohar, L A Avinash Chunduri, Mohan Kumar Haleyurgirisetty, Indira K Hewlett, Venkataramaniah Kamisetti, Computational design and clinical demonstration of a copper nanocluster based universal immunosensor for sensitive diagnostics, Nanoscale Advances, 2, 304-314, (2020). DOI: https://doi.org/10.1039/C9NA00503J

S Tukaram, R Bhimireddi, K B R Varma, Sr_(1.7)(Na_0.5Bi_0.5)_0.3Bi₄Ti₅O₁₈ ceramics in the system Sr_(2−x )(Na_0.5Bi_0.5)_x Bi₄Ti₅O₁₈ (where 0 ≤ x ≤ 0.5), J American Ceramic Society, 102(7), 4082, (2019). DOI: https://doi.org/10.1111/jace.16230

R Bhimireddi, S Tukaram, K B R Varma, Polymer composite of poly (vinylidene fluoride)— 2-methyl- 4-nitroaniline via hot-pressing technique; structural, optical and electrical properties, Materials Research Express, 6(7), 076303, (2019). DOI: https://doi.org/10.1088/2053-1591/ab12a8

Nandakumar H, Srivastava S, ABC-OCT – A Cross-Platform Implementation of Real-Time Fourier-Domain Optical Coherence Tomography, Journal of Open Research Software, 8(1), 7, (2020). DOI: http://doi.org/10.5334/jors.272

Sumukh Nandan R, R Gowrishankar, Shailesh Srivastava, Active loss compensation in the resonant optical gyroscope with a “reflector”: towards a cost-effective alternative for the navigational grade, Applied Optics, 58(31), 8589-8597, (2019). DOI: https://doi.org/10.1364/AO.58.008589

Murali Ravi, Angu Sewa, Shashidhar T G, Siva Sankara Sai Sanagapati, FPGA as a Hardware Accelerator for Computation Intensive Maximum Likelihood Expectation Maximization Medical Image Reconstruction Algorithm, IEEE Access, 7, 111727-111735, (2019). DOI: https://doi.org/10.1109/ACCESS.2019.2932647

Ranjan Rai, Muralikrishna Molli, Magnetic, optical and photocatalytic properties of yttrium doped KBiFe₂O₅, Applied Physics A, 125, 878, (2019). DOI: https://doi.org/10.1007/s00339-019-3175-7

Sumukh Nandan R, Shailesh Srivastava, R Gowrishankar, Non-reciprocal biasing for performance enhancement of the resonant fiber gyroscope with ‘Reflector’ using In-line Faraday rotators: Design, analysis and characterization, Optical Fiber Technology, 53, 102038, (2019). DOI: https://doi.org/10.1016/j.yofte.2019.102038

Jayachandra Prasad T, Neelima G, Ravi N, Kiran N, Nanda Kumar Reddy Nallabala, Venkata Krishnaiah Kummara, Suresh K, Paramesh Gadige, Optical and spectroscopic properties of Ho³⁺-doped fluorophosphate glasses for visible lighting applications, Materials Research Bulletin, 124, 110753, (2020). DOI: https://doi.org/10.1016/j.materresbull.2019.110753

Hari Nandakumar, Satya Prasanna Mallick, Shailesh Srivastava, Sensing high frequency sub-nanometer vibrations using optical coherence tomography with real-time profilometry of multiple inner layers, Optics and Lasers in Engineering, 127, 105992, (2020). DOI: https://doi.org/10.1016/j.optlaseng.2019.105992

Lavanya Rathi P, Deepa S, Structural, magnetic, thermal and optical properties of Sn²⁺ cation doped magnetite nanoparticles, Ceramics International, 46(3), 2969-2978, (2019). DOI: https://doi.org/10.1016/j.ceramint.2019.09.294

P S J Bharadwaj, Swarup Kundu, Vijay Sai Kollipara, Kalidindi B R Varma, Structural, optical and magnetic properties of Sm³⁺ doped yttrium orthoferrite (YFeO₃) obtained by sol–gel synthesis route, Journal of Physics: Condensed Matter, 32(3), 035810, (2019). DOI: https://doi.org/10.1088/1361-648X/ab4845

P S J Bharadwaj, Swarup Kundu, Vijay Sai Kollipara, Kalidindi B R Varma, Synergistic effect of trivalent (Gd³⁺, Sm³⁺) and high-valent (Ti⁴⁺) co-doping on antiferromagnetic YFeO₃, RSC Advances, 10(37), 22183-22195, (2020). DOI: https://doi.org/10.1039/d0ra02532a

Conference Presentations / Proceedings 2019/20

Hema Chander Ch, Paramesh Gadige, Study of coffee-ring patterns from drying drops of clay particle suspensions and effect of electric field, CompFlu 2019 (5 Dec 2019) Indian Institute of Science Education and Research Bhopal (IISERB), Bhopal, Madhya Pradesh.

Padala Sairam Reddy, Sai Kiran Posam, Siva Sankara Sai S, Sai Kishore Bhyri, Novel RWSA algorithm for Flex-Grid Optical networks giving best Optical performance, Spectrally efficient and Cost optimized network design, IEEE International Conference on Advanced Networks and Telecommunications Systems (IEEE-ANTS 2019) (16-19 Dec 2019) Goa, India.

Pranav Godway, Gowrishankar R, Vikram S, V S S Lakshmana Rao B, Sai Krian Kumar Reddy Y, Siva Sankara Sai Sanagapati, B V Avinash, Smart Traffic Management System Based on Software Defined Internet of Things Architecture, IEEE International Conference on Advanced Networks and Telecommunications Systems (IEEE-ANTS 2019) (16-19 Dec 2019) Goa, India. Proceedings: https://doi.org/10.1109/ANTS47819.2019.9118094

Lavanya Rathi P, Gowrishankar R, Deepa S, Dielectric and Magnetic properties of Oxides of Tin and Iron and their Composites – A Comparative Study, 64^th DAE Solid State Physics Symposium (DAE-SSPS 2019) (18-22 Dec 2019) Indian Institute of Technology, Jodhpur, Rajasthan.

Anjana Biswas and Prathibha C, Fabrication and Characterization of Low Cost 1-D TiO2 Nanotubes and their use in Defluoridation of Water, 64^th DAE Solid State Physics Symposium (DAE-SSPS 2019) (18-22 Dec 2019) Indian Institute of Technology, Jodhpur, Rajasthan.

R Sai Santosh, D Sai Shyam, Tomonori Fukuchi, Chary Rangacharyulu, K Venkataramaniah, K Vijay Sai, Design and optimization of a collimator for a New PET system using GATE simulation, 64^th DAE-BRNS Symposium on Nuclear Physics (23-27 Dec 2019) Lucknow University, Uttar Pradesh. Proceedings: http://sympnp.org/proceedings/64/G3.pdf

C V Nithishkumar, M Venkatesh Prasad, K Vijay Sai, K Venkataramaniah, Arun K Jain, Non-existence of ¹²C_(g,s)+¹²C_(g,s) configuration in ²⁴Mg_(g,s) due to mismatch of ¹²C_(g,s) deformed configurations at the surface, 64^th DAE-BRNS Symposium on Nuclear Physics (23-27 Dec 2019) Lucknow University, Uttar Pradesh. Proceedings: http://sympnp.org/proceedings/64/B72.pdf

C Scheidenberger, D S Shreesha Rao, Sagar Venkatesh Prasad, C V Nithishkumar, K Venkataramaniah, K Vijay Sai, B Pfeiffer, A new weighted-slope method for extrapolation of Experimental Masses of Nuclei far from the valley of stability, 64^th DAE-BRNS Symposium on Nuclear Physics (23-27 Dec 2019) Lucknow University, Uttar Pradesh. Proceedings: http://sympnp.org/proceedings/64/A3.pdf

B Pfeiffer, D S Shreesha Rao, K Vijay Sai, K Venkataramaniah, C Scheidenberger, Garvey-Kelson relations revisited for Masses of Nuclei far from the valley of stability, 64^th DAE-BRNS Symposium on Nuclear Physics (23-27 Dec 2019) Lucknow University, Uttar Pradesh. Proceedings: http://sympnp.org/proceedings/64/A45.pdf

P C Sood, R Gowrishankar, Occurrence of low-lying K=8 2qp structures in actinides and beyond, 64^th DAE-BRNS Symposium on Nuclear Physics (23-27 Dec 2019) Lucknow University, Uttar Pradesh. Proceedings: http://sympnp.org/proceedings/64/A23.pdf

R Gowrishankar, Venkatesh Prasad M, Nitishkumar C V, P C Sood, Low-lying structures in neutron rich ²⁵⁶₉₉Es₁₅₇, 64^th DAE-BRNS Symposium on Nuclear Physics (23-27 Dec 2019) Lucknow University, Uttar Pradesh. Proceedings: http://sympnp.org/proceedings/64/A122.pdf

D Sai Shyam, Tomonori Fukuchi, R Sai Santosh, K Vijay Sai, Chary Rangacharyulu, Cascade gamma correlations in beta minus decays for a novel modality of medical imaging – simulations, 10^th International Conference on Isotopes (10ICI) (3-7 Feb 2020) Kuala Lumpur, Malaysia.

Ranjan Rai, Muralikrishna Molli, Temperature dependent magnetic properties of KBiFe₂O₅, International Conference On Advances In Basic Sciences (ICABS19) (7-9 Feb 2019) Bahal, Haryana. Proceedings: https://doi.org/10.1063/1.5122447

Fabrication of glass- ceramics comprising of semi conducting metal oxide crystallites at different length scales and study their gas sensing characteristics
UGC-BSR Startup – ₹10 Lakhs (2019-2022)

Principal Investigator: Dr. Gadige Paramesh

The glass-ceramics (glasses embedded with nanocrystallites) of semiconducting oxide phases crystallized in glass-matrices will be novel materials that possess unique properties and find various applications as sensors, photocatalysts and for biomedical applications. The semiconducting metal oxide glass-ceramics are not explored fully and has great significance in the current research. In the present project, it is intended to develop glass-ceramics of semiconducting oxide phases such as TiO2, ZnO, CuO or Cu2O, NiO etc. and study their physical as well as gas sensor characteristics.

The project will deliver fabrication of semiconducting oxide glass-ceramic sensors and studying gas sensing characteristics.

Social Relevance: Various gases are widely used in industries, hospitals as well as emitted during mining, drilling or due to chemical wastage dumping. Their detection and control is very important for social safety. Gas sensors serve the purpose and there exists great importance to develop stable gas sensors.

Gamma-Ray and Ion Beam Irradiation Studies on Lead-Free Piezoelectric Ceramics and their Polymer Composites
UGC-DAE-CSR Kolkata – ₹45,000 (2019-2020)

Principal Investigators: Dr. Gadige Paramesh

Lead based ferroelectric and piezoelectric properties were studied with radiation exposure. Recently, lead-free piezoelectric ceramics are in focus due to high toxicity of the lead element. In this prospect, there exist great importance in understanding the properties of lead-free piezoceramic materials under high energy irradiations and evaluating their performances.

Gamma ray and ion beam irradiation studies and investigating the post-irradiation performance of piezoceramics and their polymer composites.

Social Relevance: High energy radiation is emitted in the space has impact on materials used for space applications. Therefore, it needs to be understood, the behavior or performance of the materials used in sensors/devices irradiated with high energy gamma rays/ionic radiation that exist in space.

Understanding the jamming dynamics and nonlinear viscoelasticity of non-equilibrium viscous liquids with non-linear dielectric and rheo-dielectric studies
DST SERB – ₹37.1 Lakhs* (2019-2020) *Project funds going to RRI (not SSSIHL)

Principal Investigators: Prof. Ranjini Bandyopadhyay (Raman Research Institute, Bangalore) and Dr. Gadige Paramesh

Glasses and soft materials are the important class of materials with widespread applications in various fields of technology (Civil, optical, biomedical sectors, etc.). All glass forming liquids exhibit universal slowdown of the dynamics (of its constituents with which it makes up) and an evolution of regions of heterogeneous dynamics as the mysterious glass-transition is approached.

In this project, we use dielectric and rheological studies to understand the origin of the glass transition which is associated with the universal slowdown of the dynamics of glass constituents (atoms, molecules, macromolecules or colloidal particles). This basic understanding will further help to develop new glassy materials for various applications.

Design and Development of nanomaterial based dip sticks and tea bags for instant removal of fluoride from water
Kurita Water and Environment Foundation (KWEF) – ₹2.8 Lakhs (2019-2020)

Principal Investigators: Dr. (Mrs.) C Prathibha

Nanoscience has opened new avenues to many useful and powerful applications in the field of environmental remediation. Nanomaterials offer the possibility of efficient removal of various pollutants like fluorides, nitrates and various toxic ions from drinking water. By developing the hybrid nanoadsorbents, the efficiency of the existing technique, adsorption for contaminant removal can be enhanced. a common problem of using nanomaterials as adsorbents for defluoridation is their removal from aqueous solution, post defluoridation treatment. Development of hybrid nanoadsorbents is a solution to this problem. These nanoadsorbents pave way to transform our work in to technology development.

Developed nanoadsorbents could be directly used as tea bags and dip sticks for instant removal of fluoride from water. They could also be used in development of cost-effective filters for defluoridation of water.

The most significant inorganic pollutant in groundwater affecting human health at the global scale, according to the WHO, is fluoride. Nineteen states of India have been identified as endemic to fluorosis due to excess of fluoride in drinking water. Nanoadsorbents developed in the project can be used to design a simple, affordable and safe fluoride water filters, tea bags and dipsticks, which can be used in the fluoride affected areas of several parts of India and more particularly Anantapur district of Andhra Pradesh, which is one of the most affected states.

Experimental Investigations on the level structures of doubly odd Ta isotopes
UGC-DAE CSR Kolkata – ₹6.8 Lakhs (2019-2020)

Principal Investigators: Dr. Gowrishankar R, Dr. (Miss) Deepa Seetharaman and Dr. K Vijay Sai

The Scope of this project is experimental investigations on the level structures of a few Tantalum isotopes like 186Ta, 184Ta and 178Ta. The work is carried out on collaboration mode, wherein the PI can access the experimental facilities like particle accelerators, reactors, Gamma Array detectors, etc. from any of the DAE institutions, such as VECC, BARC, etc.

The analysis of the experimental results would throw light on the low-lying levels of the doubly odd Ta isotopes for which the current data is minimal and inconclusive. The collaborative work will utilise the National facilities set up by Govt of India and establish good relationship between Universities and such central facilities.

Design and Development of Gamma-Florescence Dual Imaging Sentinel Lymph Node Navigation Surgery Intraoperative Probe
DAE-BRNS – ₹94 Lakhs (2018-2021)

Principal Investigators: Prof. S Siva Sankara Sai

Scope: The Dual Imaging Intraoperative probe for imaging the sentinel node is an innovative step towards providing the doctor with ease of access to technology at the operation theatre. The probe consists of two parts. The one which assesses the functionality (metabolism) of the ROI and the other which provides the anatomical details. This equips the surgeon to identify the exact location of the ‘sentinel’ lymph node located amongst 40 other lymph nodes at the axial region. The convenience of the bedside imaging facility allows the surgeon to perform post-operative validation of the surgery to avoid repeated incisions.

Deliverables:

• A prototype of portable Dual Modality Intra-Operative probe for Sentinel Node Surgery Navigation.
• Establishing the validity of its use through clinical trials in the operation theatre.

Social Relevance: Presently, nearly 13 million new cancer cases and 7.6 million cancer deaths occur worldwide each year. The availability of a low-cost bedside imaging device will reduce the need for repeated medical interventions by allowing post-operative validation. This will ensure affordability of high-quality technology to patients thus providing better healthcare.

Femtosecond laser Enabled Micro-fabrication of Micro-Total-analysis Optofluidic Systems (FEMTOS)
Department of Science & Technology (DST) – ₹24 Lakhs (2018-2021)
Principal Investigators: Dr. S Venketesh

FLAP-MED: Femtosecond laser Assisted Prototyping Micro Electro-Optofluidic Devices
Department of Science & Technology (DST) – ₹48 Lakhs (2018-2020)
Principal Investigators: Dr. S Venketesh

Design and development of Glass based optofluidic platform by Femtosecond Laser Micromachining
Department of Science & Technology (DST) – ₹46 Lakhs (2020-2022)
Principal Investigators: Dr. S Venketesh

The projects (all three above) aim to realize opto-fluidic lab on chip devices for lost cost settings with applications in disease detection and cell manipulation.

There are two main parts:

1. The ‘chip’ design optimization and fabrication
2. The chip reader: which is being co-developed by industrial partners

The low-cost technologies will help in resource limited settings.

Dr. Sadhu Sai Pavan Prashanth
Dr. (Mrs.) Bharathi P

Sri Sai Kiran Aditha
Photovoltaic Materials
Supervisor: Prof. K Venkataramaniah

Sri Sumukh Nandan R
Fiber Optic Sensors, Gyroscopes
Supervisors: Dr. Gowrishankar R and Dr. Shailesh Shrivastava

Sri K Raja Simha
Femtosecond Laser Micromachining, Integrated Optics and Lab-on-chip devices
Supervisor: Dr. Shailesh Shrivastava

Sri P Sai Jagannadha Bharadwaj
Materials for Energy and Sensing Applications
Supervisor: Dr. K Vijay Sai

Sri Santosh C R
Ultrafast Fiber Lasers
Supervisors: Dr. R Gowrishankar and Dr. Shailesh Shrivastava

Sri Ranjan Rai
Materials Science
Supervisor: Dr. Muralikrishna Molli

Miss Lavanya Rathi P
Materials Science: Magnetic materials
Supervisor: Dr. (Miss) Deepa Seetharaman

Sri Dhavala Lokeswararao
Electro-ceramic materials for Energy devices
Supervisor: Dr. K Vijay Sai

Miss Anjana Biswas
Materials Science: Development of nanomaterials for sensing and adsorption of contaminants from water
Supervisor: Dr. (Mrs.) C Prathibha

Sri Ashwin S
Computational Material Science and Modelling
Supervisor: Dr. V Sai Muthukumar

Sri Prajal Chettri
Femtosecond Laser Micromachining
Supervisor: Dr. Shailesh Shrivastava

Miss Susshma N
Nuclear Physics
Supervisor: Dr. Gowrishankar R