Abstract: The present disclosure provides a simple and inexpensive method to produce reduced Graphene oxide (rGO). The method comprises conversion of low-cost carbon sources such as coal tar pitch (industrial by-product) into a high quality rGO wherein said conversion is carried out by annealing the carbon source at two different temperatures. The rGO is obtained at high yields by employing the present method and the obtained rGO demonstrates high conductivity and good surface area along with very low oxygen content.
Type:
Grant
Filed:
May 22, 2019
Date of Patent:
February 13, 2024
Assignees:
TATA STEEL LIMITED, CENTRE FOR NANO AND SOFT MATTER SCIENCES
Abstract: A visibility controlling device with switchable transparency. This design of visibility controlling device is economical and can be operated manually or under electric power. The time for switching from translucent to transparent state requires about 5-30 seconds.
Type:
Grant
Filed:
September 16, 2019
Date of Patent:
October 10, 2023
Assignee:
CENTRE FOR NANO AND SOFT MATTER SCIENCES
Abstract: The present disclosure provides a simple and inexpensive method to produce reduced Graphene oxide (rGO). The method comprises conversion of low-cost carbon sources such as coal tar pitch (industrial by-product) into a high quality rGO wherein said conversion is carried out by annealing the carbon source at two different temperatures. The rGO is obtained at high yields by employing the present method and the obtained rGO demonstrates high conductivity and good surface area along with very low oxygen content.
Type:
Application
Filed:
May 22, 2019
Publication date:
August 5, 2021
Applicants:
TATA STEEL LIMITED, CENTRE FOR NANO AND SOFT MATTER SCIENCES
Abstract: The present disclosure relates to a process for producing graphene, wherein the process is simple and economical. In the said process the substrate is contacted with vaporized seedlac to produce graphene on a substrate including but not limited to conductive material and non-conductive material. The disclosure further relates to a graphene which is impermeable to ions and molecules, resistant to oxidation and is hydrophobic. The disclosure furthermore relates to a substrate comprising graphene, said substrate is resistant to corrosion, resistant to oxidation and is hydrophobic.
Type:
Application
Filed:
July 21, 2017
Publication date:
November 21, 2019
Applicants:
TATA STEEL LIMITED, CENTRE FOR NANO AND SOFT MATTER SCIENCES