Akademik Veri Yönetim Sistemi
Diğer, ss.22, 2025
The weekly published popular science journal Herkese Bilim Teknoloji published this essay. It presents the discovery, structure, properties, and applications of graphene, highlighting its significance as one of the most important material breakthroughs of the 21st century. It focuses on the pioneering work of Andre Geim and Konstantin Novoselov, who, in 2004 at the University of Manchester, successfully isolated a single atomic layer of carbon using a simple mechanical exfoliation technique involving ordinary adhesive tape. This seemingly simple yet innovative experiment led to the production of graphene—an achievement that was first reported in Science in 2004 and later recognized with the 2010 Nobel Prize in Physics.
Graphene is described as a one-atom-thick, two-dimensional carbon allotrope arranged in a hexagonal honeycomb lattice. Its atomic structure consists of strong sigma bonds between neighboring carbon atoms and highly mobile pi electrons, which together give rise to exceptional properties. The material is extraordinarily thin, lightweight, and possesses an extremely high surface area. Despite its minimal thickness, graphene exhibits remarkable mechanical strength—up to 100–300 times stronger than steel—while remaining highly flexible. Graphene exhibits outstanding electrical and thermal conductivity, optical transparency, and impermeability to gases, including helium. These properties position graphene as a transformative material across multiple fields. Key application areas discussed include flexible and high-speed electronics, optoelectronics, biomedical technologies (such as biosensors, drug delivery systems, and antimicrobial coatings), energy storage and conversion systems, advanced composite materials, smart food packaging, and quantum computing research. Although challenges remain in large-scale production and integration, graphene’s unique combination of properties ensures its continued role as a driving force in scientific innovation and future technological development.