Affiliation:
1. MEMS Microfluidics and Nanoelectronics (MMNE) Lab Department of Electrical and Electronics Engineering Birla Institute of Technology and Science (BITS) Pilani Hyderabad Campus Hyderabad 500078 India
2. Department of Chemical Engineering Birla Institute of Technology and Science Pilani Dubai Campus Dubai UAE
3. Micro & Nano‐scale Transport Laboratory Department of Mechanical & Mechatronics Engineering Waterloo Institute for Nanotechnology University of Waterloo Waterloo Ontario N2L 3G1 Canada
Abstract
AbstractExtraction of graphene and graphene derivatives from non‐toxic, biocompatible, eco‐friendly, and biodegradable resources with a one‐step production process is a challenge. This work is the first attempt at the one‐step graphenization of Shellac, a biopolymer derived from natural resources, achieved using direct laser patterning. Interestingly, the process highlights substrate independence by producing reduced graphene oxide (rGO) from multiple substrates, such as glass slides, Copper (Cu) adhesive tape, and overhead projector (OHP) plastic films. The produced rGO is fully characterized, and it is found that the sheet resistance is as low as 5.4., 24.65, and 8.4 Ω Sq−1. on the glass slide, OHP plastic sheet, and Cu adhesive, respectively. Moreover, developing various logos on resin‐coated ceramic tiles demonstrated the possibility of patterning desired conductive rGO patterns. Furthermore, a recyclable flexible rGO/Shellac heater is fabricated to validate its electrothermal performance (117.3 °C at 9.5 V) with foldable stability. The proposed one‐step substrate independent two‐material fabrication will revolutionize the process, potentially replacing conventional toxic routes of graphene production.