TINC's Blog Posts Tagged 'graphene' (79)

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"Hot Nanotechnology Papers 2011": Laser Patterning of Epitaxial Graphene for Schottky Junction Photodetectors

Title of the paper:

Laser Patterning of Epitaxial Graphene for Schottky Junction Photodetectors

Authors: Ram Sevak Singh, Venkatram Nalla, Wei Chen, Andrew Thye Shen Wee*, and Wei Ji*…

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Added by TINC on October 28, 2011 at 3:00pm — No Comments

"Hot Nanotechnology Papers 2011": Functionalized graphene reinforced thermoplastic nanocomposites as strain sensors in structural health monitoring

Title of the paper: Functionalized graphene reinforced thermoplastic nanocomposites as strain sensors in structural health monitoring



Authors: Varrla Eswaraiah, Krishnan Balasubramaniam and Sundara Ramaprabhu



University/Institute: Indian Institute of Technology Madras, Chennai, India.



Abstracts: Functionalized graphene–polyvinylidene fluoride (f-G–PVDF)…

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Added by TINC on October 28, 2011 at 9:31am — No Comments

"Hot Nanotechnology Papers 2011": Functionalized Graphene–PVDF Foam Composites for EMI Shielding

Title of the paper: Functionalized Graphene–PVDF Foam Composites for EMI Shielding



Authors: Varrla Eswaraiah,Venkataraman Sankaranarayanan,Sundara Ramaprabhu



University/Institute: Indian Institute of Technology Madras, Chennai, India.



Abstract: Novel foam composites comprising functionalized graphene (f-G) and…

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Added by TINC on October 28, 2011 at 9:29am — No Comments

Korean researchers fabricated a stretchable, transparent graphene-based transistor

Korean researchers fabricated a stretchable, transparent graphene-based transistor. They say that the new to transistor overcomes some of the problems faced by transistors made of conventional semiconductor materials - which simply cannot be made stretchable and transparent on substrates such as rubber slabs or balloons.



The graphene based transistors could be stretched up to 5% for 1,000 times and still maintain their good electrical properties. In one experiment, the researchers…

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Added by TINC on October 27, 2011 at 7:58pm — No Comments

GRAPHENE NANOPATTERNS WITH CRYSTALLOGRAPHIC ORIENTATION CONTROL FOR NANOELECTRONIC APPLICATIONS

we have uploaded to our homepage

    http://www.nanotechnology.hu

our new paper entitled

GRAPHENE NANOPATTERNS WITH CRYSTALLOGRAPHIC ORIENTATION CONTROL FOR NANOELECTRONIC APPLICATIONS;
Diamond and Related Materials 20, 1212(2011)

Added by TINC on October 26, 2011 at 8:07pm — No Comments

New graphene transistor design could enable 100 trillion FETs per sq. centimeter

Researchers from Rice University and the Hong Kong Polytechnic University discovered that Graphene nanoribbons could stand tall on substrates and also form arcs. The contact between the graphene and substrate (which could be diamond and also nickel) is very light and so the graphene retains nearly all of its inherent electrical or magnetic properties. Using such a design can theoretically enable putting 100 trillion graphene-wall field-effect transistors (FETs) on a square-centimeter chip.…

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Added by TINC on October 9, 2011 at 8:37pm — 1 Comment

GRAPHENE WORKSHOP , 2011 oktober 13, MTA MFA

GRAPHENE WORKSHOP

of the

JOINT KOREAN-HUNGARIAN LABORATORY FOR NANOSCIENCES

(MTA MFA, 1125 Budapest, Konkoly-Thege M. str. 29 -33, Building 26. 1st floor, Meeting Room)

2011 October 13

Program:

10:00 - 10: 30 Chanyong HWANG (KRISS): Growth of h-BN, graphene on h-BN, and h-BN on graphene.

10:30 - 11:00 Levente TAPASZTÓ (MTA MFA): Grain boundaries of graphene as seen by…

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Added by TINC on October 5, 2011 at 7:57pm — 1 Comment

Graphene Flagship announces the workshop: Graphene for Future Emerging Technologies

The Graphene Flagship is pleased to announce the workshop “Graphene for Future Emerging Technologies: Challenges and Opportunities” that will take place in Madrid, Spain on October 18th,, 2011.

 

This workshop aims to present the current state of the art and the opportunities of graphene-based materials/devices and related structures for future emerging technologies in the field of Information and…

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Added by TINC on October 2, 2011 at 6:41pm — No Comments

MIT wants to make a one-kilometer square sheet of graphene

MIT's new Center for Graphene Devices and Systems (MIT-CG) has an ambitious plan - to produce a one-kilometer square sheet of graphene. They are currently starting to develop the basic science and technology - which is based on the printing press. The idea is to grow graphene in a roll to roll process. MIT hopes that if they manage to develop this technology they'll enable a whole new graphene industry.



Currently they've been able to grow small sheets only using this technology (a… Continue

Added by TINC on September 27, 2011 at 7:14pm — No Comments

Folding graphene can make it even stronger

Graphene is strong - about 200 times greater than steel, but new research has shown that folding graphene nanoribbons can make a material that's ever stronger. The Chinese researchers call the new material Grafold.



The researchers say that while graphene is very high tensile strength (i.e. it is difficult to pull it apart) it is not strong under compression and cannot be squeezed. Grafold, however can withstand much larger amounts of compression (10-25 GPa depending on the structure… Continue

Added by TINC on September 20, 2011 at 6:51pm — No Comments

Graphene2012 - an international platform between science and industry



Brussels (Belgium) will host the largest European Event in Graphene from 10th until 13th of April 2012 at Brussels44Center.

 

A plenary session with internationally renowned speakers, extensive thematic workshops in parallel, an important industrial exhibition carried out with the latest Graphene nanotrends for the future will be some of the features of this event.

 

Following the overwhelming success of Graphene 2011 in Bilbao (Spain), Phantoms Foundation…

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Added by TINC on September 14, 2011 at 7:48pm — 1 Comment

Two new papers on graphene grains and functionalized carbon nanotubes

Dear All,



we have uploaded to our homepage



    http://www.nanotechnology.hu



two new papers from our group:



REVEALING THE GRAIN STRUCTURE OF GRAPHENE GROWN BY CHEMICAL VAPOR DEPOSITION;

Appl. Phys. Lett. 99, 023104(2011)



MAPPING OF FUNCTIONALIZED REGIONS ON CARBON NANOTUBES BY SCANNING TUNNELING MICROSCOPY;

J. Phys. Chem. C 115, 3229(2011)



Best regards,…

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Added by TINC on September 5, 2011 at 8:32pm — No Comments

Graphene can be used to create artificial muscles?

Researchers managed to fabricate electrochemical actuators based on flexible graphene paper. These kinds of devices can convert electrical energy into mechanical energy through stretching or contraction, behaving like artificial muscles. This has all sorts of potential applications - in healthcare and nanotechnology...…





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Added by TINC on September 1, 2011 at 5:45pm — No Comments

SMCs - new revolutionary graphene based energy devices

Nanotek Instruments and its subsidiary Angstron Materials developed a new graphene-based energy storage device - something between a battery and a supercapacitor. The new device is called graphene surface-enabled lithium ion-exchanging cells, or surface-mediated cells (SMCs).



Nanotek says that even the first generation devices (which aren't optimized yet) feature fast recharge cycles - and already outperform both supercapacitors and lithium-ion batteries. Recharge time is 10 times… Continue

Added by TINC on August 20, 2011 at 9:44am — No Comments

New research aims to use Graphene to build better neural implants

Mark Ming-Cheng Cheng, an assistant professor from Wayne State University received a five-year, $475,000 grant from the National Science Foundation to study the potential of graphene for neural implants that can be used to treat disorders and diseases such as blindness, deafness, epilepsy, spinal cord injury, and Alzheimer's and Parkinson's. He hopes to check out whether graphene can be used to make reliable, high-performance, long-term implantable electrode systems:…



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Added by TINC on August 4, 2011 at 8:31pm — No Comments

$15 billion worth of Graphene from a box of cookies...

Researchers from Rice University had a meeting in which they discussed the possibility of making graphene out of sugar. Chemist James Tour said you can actually make it from any carbon source - including a girl scout cookie.


http://www.graphene-info.com/15-billion-worth-graphene-box-cookies

Added by TINC on August 4, 2011 at 8:14pm — 1 Comment

New hybrid graphene-metal electrode promise unbreakable touch displays, flexible OLEDs and solar cells

Researchers from Rice University create thin hybrid metal-graphene electrodes - that outperform ITO electrodes, are also more transparent and less resistance to electric current. These electrodes can be used to create non-glass touch displays, transparent and flexible OLEDs, solar cells and lighting products.



This is actually quite close to commercialization:…



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Added by TINC on August 2, 2011 at 6:28pm — No Comments

Graphene can be used to make high-density lithium-sulfur car batteries

Researchers from Stanford developed a new cathode material for rechargeable lithium-sulfur batteries - by wrapping sulfur particles in graphene sheets. This new cathode enables batteries with a significantly higher energy density than is currently possible. Such batteries can be used to power electric cars - and be much more efficient that today's batteries:…



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Added by TINC on July 14, 2011 at 6:20pm — No Comments

Graphene-based speaker developed in Korea

Researchers from Seoul's National University developed a transparent and lightweight speaker made from Graphene. This may enable speakers embedded in windows or displays. It may be especially suited to develop noise-cancelling devices.



The researchers say that Graphene speakers will be cheaper and very power efficient compared to other types of speakers. There is still a lot of work to be done, and the research group is currently developing an improved bass response.…





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Added by TINC on July 8, 2011 at 5:07pm — No Comments

Graphene based quantum dots may lead to cheap and efficient solar cells and OLED displays

Scientists from the National Physical Laboratory in New Delhi, India developed graphene based quantum dots (GQDs) blended with organic polymers that can be used in new photovoltaics (solar) cells. This may solve the problem of toxic metals (cadmium and lead) used in today's quantum dots, and the new material is also more stable then current organic materials.



The GQDs are 9-nm in size have similar electronic properties to normal QDs, and actually perform better (less current loss and… Continue

Added by TINC on July 6, 2011 at 7:20pm — 2 Comments

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