30 August 2012

'Nano machine shop' shapes nanowires, graphene

Researchers have developed a 'nano machine shop' that can shape nanowires and ultrathin films such as graphene, potentially representing a future manufacturing method for these structures.

The team at Purdue University used a technique called laser shock induced shaping to stamp nano and microgears, form tiny circular shapes from graphene and change the shape of silver nanowires.

"We do this shaping at room temperature and atmospheric pressure, like a nano machine shop," said Gary Cheng, an associate professor of industrial engineering at Purdue.

The researchers say that their method can tune nanowires by altering electrical and optoelectrical properties that are critical for electronic components, as well as change the properties of graphene, which is a step towards harnessing the material for electronic applications.

The technique works by using a multilayered sandwich structure with a tiny mold at the bottom. Nanowires are situated directly above the mold, and other materials are layered between the nanowires and a glass cover sheet. Exposing this layered 'forming unit' to an ultra fast pulsing laser causes one of the layers to burn up, generating a downward pressure that forces the nanowires into the mold and changes their shape.

"The process could be scaled up for an industrial roll to roll manufacturing process by changing laser beam size and scanning speed," Cheng said. "The laser shock induced shaping approach is fast and low cost."

Author
Simon Fogg

Supporting Information

Websites
http://www.purdue.edu

This material is protected by Findlay Media copyright
See Terms and Conditions.
One-off usage is permitted but bulk copying is not.
For multiple copies contact the sales team.

Do you have any comments about this article?


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Amp works at 50% efficiency

Researchers from the Universities of Bristol and Cardiff have created an ...

Materials breakthrough

A technique to study the interface between materials, developed at the National ...

Quantum logic gate created

Professor Gerhard Rempe, director of the Max Planck Institute of Quantum ...

Down to the wire

Once the plain old telephone service, the role of the telephone wire continues ...

Within touching distance

Graphene is starting to filter onto the market. HEAD claims its tennis racquets ...

Making light work of photonics

Today's world is permeated by electronics, from industry to communications, ...

NI Trend Watch 2014

This report from National Instruments summarises the latest trends in the ...

Capactive sensing

This whitepaper looks at a number of capacitive sensing applications to ...

Altium's Innovation Station

An introduction to the Altium Innovation Station. It includes an overview of ...

IBM tackles 22nm challenges

IBM has announced the semiconductor industry’s first computationally based ...

BEEAs 2013

9th October 2014, 8 Northumberland, London

Self-destructing electronics

Researchers at Iowa State University have created transient electronics that ...

MEMS switch for 'true 4G'

General Electric has created a 3GHz RF MEMS switch that can handle up to 5kW of ...

Smart fabrics developed at NPL

NPL has developed a new method to produce conductive textiles. The technique ...

Electronic charge to 800mph

Breaking the land speed record would require a very special blend of latest ...

Flash drives semi technologies

Demand for NAND flash is said to be growing at 45% per year, driven mainly by ...

Top tech trends for 2013

Bee Thakore, European technical marketing manager for element14, gives an ...

Nathan Hill, director, NGI

Research into graphene won Andre Geim and Kostya Novoselov the Nobel prize in ...

Brent Hudson, Sagentia

Sagentia's ceo tells Graham Pitcher how the consulting company is anticipating ...

Prof Donal Bradley, Imperial

Graham Pitcher talks to a researcher who was 'there at the start' of the ...