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Ashis Sutradhar Nitai’s recent research centers on the synthesis and surface engineering of polymeric biomaterials derived from natural sources, with a focus on developing soft 2D biocomposite films. His MSc thesis involved transforming polymer solutions into amphiphilic, swellable films and modifying their surface properties through lignin and silver nanoparticle incorporation for biomedical applications. He has also conducted comparative reviews on materials used in water treatment, biomedical, and energy applications, emphasizing how synthesis methods and structural variations influence surface functionality and material performance. His broader interest lies in understanding the molecular-level physicochemical behavior of bio-based, carbon, and nanomaterials to guide the design of multifunctional systems for real-world use.
Lignin in amphiphilic biocomposite fabrication for wound healing application
In my research, I fabricated a lignin-based biocomposite film with amphiphilic and stable characteristics. The material exhibited good wettability even with amphiphilic properties and demonstrated strong adhesion on skin and wound surfaces. It also showed improved antibacterial activity in vivo, attributed to the controlled dispersion of silver nanoparticles within the composite matrix. Notably, the film exhibited minimal nanoparticle release in blood-aqueous environments in vitro, confirming its stability and biocompatibility. A detailed discussion of this work is included in my submitted manuscripts, which I hope will be published in peer-reviewed journals soon.
Scope developed with the transition of carbon fibers to defective carbon fibers
In recent years, carbon fiber (CF) and its composites have been increasingly used in high-tech industries such as biomedical sensors, automotive and aerospace parts, and energy storage devices. Pristine CF has limited properties, so various modification techniques—like laser treatment, electron-beam irradiation, and chemical treatments—are applied to enhance its performance. These techniques introduce defects in the CF structure, significantly altering its properties, such as thermal conductivity, stress tolerance, and electrochemical behavior. In this review work, we examine how controlled defects can improve the performance of mechanical, chemical, electrical, and thermal properties at the micro and nano level in defective CF, using various analytical methods to study defect characteristics, and also suggest directions for future research.
Overview of defect forming mechanism that reason of introduce the scope of different properties in Carbon fibers
Surface structure changes depending on various precursor compositions of Carbon fiber
Crystalline structure changes of Carbon fibers with doping materials
Integrated hybrid process for PFASs removal from wastewater
The work on "Remediation of PFAS in Wastewater Sources" highlights the challenges of removing PFAS, which are resistant to conventional treatment due to their strong carbon-fluorine bonds. Various techniques like adsorption, membrane filtration, advanced oxidation processes, biodegradation, and thermal treatment are explored, though each has limitations in cost, efficiency, or effectiveness. No single method fully eliminates PFAS, so research is focused on developing hybrid systems and more sustainable technologies to improve remediation outcomes.
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