IIT Delhi Study Shows Graphene’s Exceptional Protection for Glass Against Water Exposure
IIT Delhi researchers show that atomically thin graphene enhances glass durability by shielding it from mechanical and chemical damage underwater.
IIT Delhi Study Shows Graphene’s Exceptional Protection for Glass Against Water Exposure
The Indian Institute of Technology (IIT) Delhi researchers - Prof. Nitya Nand Gosvami from the Department of Materials Science and Engineering, Prof. N. M. Anoop Krishnan from the Department of Civil Engineering, and Prime Minister’s Research Fellow Dr. Sourav Sahoo have demonstrated that an ultra-thin graphene layer, approximately one nanometer thick, can significantly enhance the durability of glass when exposed to water.
Owing to its exceptional chemical shielding properties and mechanical strength, graphene acts as a protective barrier, preventing degradation and extending the lifespan of glass surfaces in aqueous environments. This breakthrough has promising implications for various industries, including optics, construction, and biomedical applications.
This study presents a straightforward yet highly effective approach to developing ultra-durable glass coatings, making it particularly beneficial for moisture-sensitive applications such as smartphone screens, camera lenses, automotive windshields, solar panels, and optical instruments exposed to humid or wet conditions. The findings are detailed in the research paper titled "Graphene Mitigates Nanoscale Tribochemical Wear of Silica Glass in Water," published in Small (https://doi.org/10.1002/smll.202410040).
“Repeated scratch tests carried out at the nanoscale revealed that just a few layers of graphene can transform fragile silica glass into a damage-resistant surface in water by preventing severe wear. Interestingly, zero wear was observed when scratched with both hard diamond and reactive silicon countersurfaces, despite the latter being aggressively corrosive to glasses,” Prof. Nitya Nand Gosvami said.
“Molecular simulations reveal the secret behind graphene’s effectiveness: it prevents the chemical ‘sticking’ of glass to reactive bodies sliding in the presence of water. This shielding ability of graphene protects the glass from combined physical and chemical damage,” stated Prof. N. M. Anoop Krishnan.
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The duration of IIT Delhi BTech courses is four years. The full-time degree programme is divided into eight semesters. During the BTech course duration, the students have to do compulsory foundation courses in the areas of basic sciences, humanities, engineering sciences, and social sciences along with the departmental core and elective courses. Moreover, IIT Delhi offers internship opportunities to UG students, the duration of short-term internships is 1.5 to 2 months and is 6 months for long-term internships.
Apart from this, the Indian Institute of Technology, Delhi also offer an integrated BTech and MTech programme. The duration of this dual degree course is five years against the standard duration of both the courses - BTech (four years) and MTech (two years).
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