Ph.D, MSc, B.Ed., BSc

Asha R. Pai currently serves as Assistant Professor (Sr. Grade) at Department of Physics, School of Arts & Sciences, Amritapuri. She received her masters in Physics from Mahatma Gandhi University, Kottyam in 2003.

Honors and Awards

  • Certificate of Appreciation
    Amrita Vishwa Vidyapeetham, Amritapuri Campus
  • Certificate of Appreciation (Amala Bharatam clean up drive Nov 2012)
    Govt. of Kerala
  • State Eligibility test – SET- 2005

Research Experience

Dissertation -- Graphene based materials synthesis, Characterization and applications in dye sensitized Solar cells and immune sensors
Committee: Dr. Bipin Nair (Thesis Advisor)

Registration: Amrita Vishwa Vidyapeetham, Amritapuri (2007)

Principle Investigator -- Studies on Surface and electrical properties of graphene/graphene oxide-nano metal/ metal oxide hybrid materials for the application in immune sensor
Funded by Government of India Ministry of Human Resource Development (MHRD)National Mission on Education Through Information and Communication Technology (NME-ICT) (No. F.5-29/2007-DL)

Indian Nano electronic Users Program (INUP),
Center for excellence in Nanoelectronics, IIT Bombay



  • “Nanocrystalline ZrO2-PEG thin films sensitized with natural dye chlorophyll extracted from green leaves of Chromolaena Odorata”, Annual Nanophotonics Workshop 2009, 27th – 28th February, 2009.  (Poster presentation)

Conferences and Workshops attended

  • Science Academies, 61st Refresher course in experimental physics, Dept. of Physics, Amrita Vishwa Vidyapeetham, Amritapuri, 16th June – 1st July, 2014. (State)
  • Two Week ISTE – Workshop on Introduction to Research Methodology, 25th June – 4th July 2012, (National)
  • INUP Hands-on training workshop, CEN, IIT Bombay, 23rd – 27th April 2012, (National)
  • NANOBIO-2012, ACNSMM, Kochi, 21st -23rd February, 2012 (International conference).
  • Lecture Workshop on Recent trends in Chemical Sciences, Dept. of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, 26th – 27th August, 2011.
  • Proteomics and Genomics Workshop, Amrita School of Biotechnology and Institute of Bioinformatics, Bangalore, Amritapuri, 18th – 19th November 2011.
  • 21st Kerala Science Congress, Kollam, 28th – 31st January 2009 (State)
  • National Seminar on Women in Science: A career in Science, CUSAT, Kochi, 5th April, 2008 (National)
  • International Conference on Solar Cells (IC- SOLACE 2008), Dept. of Physics, CUSAT, Kochi, 21st – 23rd January, 2008 (International conference)
  • National Conference on Thermo Physical Properties, Amrita Vishwa Vidyapeetham, Amritapuri, 20th – 24th September, 2007. (National)

Professional Affiliations

  • INUP project Investigator, CEN, IIT Bombay,

Professional Service

Peer-Reviewed Articles for:

  • Journal of Nanoparticle research

Member ship

  • Life member of Photonic Society of India


Publication Type: Journal Article

Year of Publication Publication Type Title


Journal Article

A. R. Pai, “Green Synthesis and Characterizations of Silver Nanoparticles Using Fresh Leaf Extract Of Morinda Citrifolia And Its Anti-Microbial Activity Studies”, International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 3, pp. 459-461, 2015.[Abstract]

Objective: To develop a rapid method of synthesis of silver nanoparticles (Ag NPs) using the fresh aqueous leaf extract of Morinda Citrifolia from 0.1 M AgNO3 solution, to characterize the resulting Ag NPs and also compare their antimicrobial activity with those of standard drugs against human pathogenic bacteria. Methods: 25 ml of the aqueous extract was added to 25 ml of 0.1 M aqueous AgNO3 at room temperature. The mixture was stirred continuously for 5-10 minutes. The reduction was completed with the appearance of brownish-black colored dispersion. The resulting nanoparticles were characterized using UV-Vis absorption spectra and Particle size analysis (DLS method). Further the Antimicrobial activity was compared with the drugs against S. aureus and P. aureginosa strains using the disk diffusion method. Results: The formation of Silver nanoparticles was confirmed with the help of UV-Vis absorption spectra at ≈ 425 nm and particle size as approximately 100 nm using Particle size analysis (DLS method). The anti-microbial activity of the Ag NPs so synthesized was studied against human pathogens in wound infections such as S. aureus and P. aureginosa strains. The inhibitory activity for Ag NPs was compared with those of known drugs such as tetracycline, Ceftazidime and Amikacin at 30 mcg. The inhibitory activity of the Synthesized Ag NPs was found pronounced against P. aureginosa strains. Conclusion: A rapid method of synthesizing Ag NPs has been developed by using the fresh leaf extract of Morinda Citrifolia and it was found that the extract is a potential reducing agent to produce stable Ag NPs. The research provides a new input to the development of anti-microbial agent.

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Journal Article

A. R. Pai and Dr. Bipin G. Nair, “Synthesis of Reduced Graphene Oxide Using Novel Exfoliation Technique and its Characterizations”, Journal of Nano-and electronic Physics, vol. 5, p. 02032 , 2013.[Abstract]

For processing of graphene based composite materials Graphene oxide is considered to be the main precursor. Though epitaxial growth and chemical vapor deposition techniques have been utilized to get monolayers of graphene, wet chemical process have been used for its large scale synthesis. For the extraction of graphene monolayer the chemical route relies on the weakening of the Van der Waals cohesive force upon the insertion of reactants in the inter layer space as a consequence sp2 lattice is partially degraded into a sp2-sp3 sheet that possesses a less π-π stacking stability. The method described here uses a novel chemical exfoliation technique. The graphite from the pencil lead is used as the precursor and it is treated with alcohol-ketone-surfactant mixture and mechanically and thermally agitated so as to get the golden brown colored suspension. The material was characterized by Fourier Transform Infra Red spectroscopy. The absence of 1570 cm – 1 peak clearly indicates the oxidation of C = C bonds. The SEM images confirmed the presence of the nanoplatelets of graphene oxide. The AFM analysis confirmed the sheet thickness of the graphene oxide sheets to be < 5 nm. The sheet resistance of the sheets of thermally treated graphene oxide or reduced graphene oxide on Si wafer (p-type, 4-6 Ω/cm) was measured as 200-300 Ω/□. The Ellipsometric characterisations also matches with that of the thermally reduced graphene oxide films formed. 

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Publication Type: Patent

Year of Publication Publication Type Title



A. R. Pai and Dr. Bipin G. Nair, “Method of preparing reduced graphene oxide”, U.S. Patent 626/CHE/20142014.

Publication Type: Conference Paper

Year of Publication Publication Type Title


Conference Paper

A. R. Pai, “A Study of Two dimensional Heterostructure using Functional Graphene Nanosheets decorated with and without metal nanoparticles and Cationic Polyelectrolyte for Immunosensor Application”, in Amrtia BIOQUEST (Poster presentation), Amrita Vishwa Vidyapeetham, Amritapuri, 2013.


Conference Paper

A. R. Pai, “Study of Conversion Efficiency of Dye sensitized solar cells using Nanocrystalline ZrO2-TiO2 binary oxide sensitized with Chlorophyll dye extracted from the leaves of Chromolaena Odorata as photo electrodes and reduced graphene oxide as counter electrodes”, in International Conference on Nanomaterial for Frontier Applications & Indo-Norwegian Workshop on Advanced Materials for Solar cell Applications, ICNFA 2013 (Oral Presentation), Coimbatore, Tamil Nadu, India, 2013.


Conference Paper

A. R. Pai, “A Novel route to reduced graphene oxide using pencil graphite: its characterization and application in immunosensor”, in International conference on Nanoscience and Nanotechnology, ICONN- 2013 (Oral presentation), SRM University, Tamilnadu, India, 2013.


Conference Paper

A. R. Pai, “Synthesis of Reduced Graphene oxide using a Novel exfoliation techniques and its characterizations”, in Second International Symposium on Semiconductor Materials and Devices, ISSMD-2 (Poster presentation), Jammu and Kashmir, India , 2013.


Conference Paper

A. R. Pai, “Synthesis and Characterization of Graphite oxide from Pencil lead”, in International Conference on Nanomaterial and Nanotechnology, ICNANO – 2011 (Poster Presentation), University of Delhi, India, 2011.


Year Title
2014 Method of preparing reduced graphene oxide, Indian Patent, No. 626/ CHE/ 2014, Patent filed: February 2014.
NIRF 2018