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Sunday, October 14, 2012

Engineering graphene nanopores for biosensing!

Researchers have used in-situ electron irradiation and heating in a TEM chamber to manipulate the size of graphene nanopores. This enables the shrinkage or widening of a graphene nanopore. The nanopores can be shrunk to the sizes small enough to thread a single DNA strand. This will help in DNA sequencing.
Graphene is a flourishing material which has significant impact on biomedical industry.

http://www.utdallas.edu/news/2012/10/2-19931_Research-Shows-Graphene-Nanopores-Can-Be-Controlle_article-wide.html

Thursday, October 11, 2012

Sunday, October 7, 2012

Scratching CVD growth of graphene- Good papers to read for newcomers in the field

1) First report on large area growth of graphene films on Ni catalysts
http://www.nature.com/nature/journal/v457/n7230/full/nature07719.html

2) Large area growth of graphene on Cu catalysts
http://www.sciencemag.org/content/324/5932/1312.short

3) Large area few layer graphene films directly grown on arbitrary substrates
http://pubs.acs.org/doi/abs/10.1021/nl801827v

4) Improved graphene transfer process
http://pubs.acs.org/doi/abs/10.1021/nl902623y

5) Wafer scale synthesis and transfer of graphene
http://pubs.acs.org/doi/abs/10.1021/nl903272n

Thursday, October 4, 2012

Grahene metamaterials for photonic memory

Graphene's role in plasmonic materials is boosted by the current report in Nature. It is demonstrated that gate controlled graphene metamaterials can exhibit photonic memory effects.
http://www.nature.com/nmat/journal/vaop/ncurrent/abs/nmat3433.html

Wednesday, October 3, 2012

Highly transparent nonvolatile resistive memory devices based on graphene

Transparent electronic memory gets a leap with the utilization of graphene as a transparent electrode  Not only transparency, it gets flexibility also by using flexible substrates.

http://www.nature.com/ncomms/journal/v3/n10/full/ncomms2110.html

Tuesday, October 2, 2012

Graphene tunnel barriers for spin injection

In a recent report, published in nature nanotechnology, graphene has been used a tunnel barrier for low resistance spin injection into silicon. This is attributed to chemical inertness and high conductivity of graphene.