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HELLO! I'M joice.

Dr. Joice Sophia Ponraj is a Research Fellow at Department of Micro and Nanofabrication associated with the Microfabrication and Exploratory Nanotechnology (MeN) group. Her research project at INL is aimed at the realisation of miniaturised gas sensors from two-dimensional nanosheets and to understand their hybrid devices.

 

 
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About Joice

Dr. Joice Sophia Ponraj obtained her Master of Science in Physics from Manonmaniam Sundaranar University, India in 2006 and Master of Philosophy in Physics from Anna University, Chennai, India in 2007. In 2014, she was awarded her Doctor of Philosophy in Epitaxial Growth of Germanium, Gallium Arsenide, Indium Gallium Phosphide and their Nanomechanical Studies from Anna University, Chennai, India. She was bestowed “Italian-Indian Bilateral Programme for Young Indian Researchers” hosted by University of Ferrara, Italy and National Doctoral Fellowship by the All India Council of Technical Education, India during her PhD. She was awarded prestigious Training and Research in Italian Laboratories fellowship three times by International Centre for Theoretical Physics, Trieste to work in Istituto dei Materiali per l'Elettronica ed il Magnetismo-CNR, Parma, Italy as a visiting researcher during 2011 to 2014.

Joice joined Institute of Functional Nano & Soft Materials, Suzhou University, China in 2014 for her postdoctoral research and also awarded the individual Chinese Post-doctoral Funding.  She worked as Assistant Professor in University of Information Science and Technology, St. Paul The Apostile, Ohrid, Republic of Macedonia. She returned back to India as she bagged the prestigious INSPIRE Faculty Award for young researcher of India with fellowship award and individual project funding to start as an independent researcher. She is working as DST INSPIRE Faculty Awardee from 2016 in the field of advanced photonic materials and devices. During the course, she received the highly competitive SERB Extramural Project Funding to work in wearable sensing devices.

Her research interests are synthesis and studies of 2D materials and semiconducting nanostructures; micro/nano fabrication of nanodevices; nanostructures and 2D materials based sensors, sensing system and renewable energy storage and hybrid/coated graphene fibre based wearable electronics and optoelectronics. She has to her credit 30 refereed publications and two book chapters in the area of semiconducting thin films and two-dimensional materials that includes several high impact publications including Advanced Energy Materials, ACS Nano, Advanced Functional Materials, Advanced Science, Laser & Photonics Reviews, Advanced Optical Materials and Nanoscale.

 

 

The Cofund project

Miniaturized gas sensors from two-dimensional MoX2 nanosheets 

The miniaturization of devices needs continuous down-scaling of sensor functions towards nanoscale. The objective of the proposed project is to develop and demonstrate new device concepts of nanoscale mechanically resonating gas sensors from MoX2 nanosheets. Specifically, the specific surface area, semiconducting properties, sensitivity and charge storing capability supplement a major contribution in gas sensor performance which could be considered with utter care by engineering these properties in MoX2 to realize selective gas sensing devices. The main focus will be dedicated to analyze different ways in improving their performance such as sensitivity, selectivity, stability and time of response to make use of enhanced functional properties of such nanoscale 2D MoX2. The sensors based on MoX2 are advantageous due to their continuous miniaturization together with better functionality and reliability of existing components. Interestingly, this research will lead to a hot trend right now in the optomechanical studies of free standing 2D MoX2 nanosheets. This work may be extended to study the in-depth device concepts and different cost-effective techniques.

This proposal will help to achieve secure, sustainable future NEMS devices which form the greatest scientific and societal challenges of the present research scenario. The significance is that we are aiming at realizing sensing devices to achieve miniaturized on-chip electronics in the application of environment pollution monitoring and industrial gas processes tracking for fast, selective detection to effectively monitor, handle and solve the issue of leakages by sensing gas molecules.

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