Navigation Links
Nanotechnologists from Penn collaborate to form near-frictionless diamond material
Date:2/25/2010

PHILADELPHIA - Researchers at the University of Pennsylvania, the University of Wisconsin-Madison and IBM Research-Zrich have fabricated an ultra sharp, diamond-like carbon tip possessing such high strength that it is 3,000 times more wear-resistant at the nanoscale than silicon.

The end result is a diamond-like carbon material mass-produced at the nanoscale that doesn't wear. The new nano-sized tip, researchers say, wears away at the rate of one atom per micrometer of sliding on a substrate of silicon dioxide, much lower than that for a silicon oxide tip which represents the current state-of-the-art. Consisting of carbon, hydrogen, silicon and oxygen molded into the shape of a nano-sized tip and integrated on the end of a silicon microcantilever for use in atomic force microscopy, the material has technological implications for atomic imaging, probe-based data storage and as emerging applications such as nanolithography, nanometrology and nanomanufacturing.

The importance of the discovery lies not just in its size and resistance to wear but also in the hard substrate against which it was shown to perform well when in sliding contact: silicon dioxide. Because silicon - used in almost all integrated circuit devices - oxidizes in atmosphere forming a thin layer of its oxide, this system is the most relevant for nanolithography, nanometrology and nanomanufacturing applications.

Probe-based technologies are expected to play a dominant role in many such technologies; however, poor wear performance of many materials when slid against silicon oxide, including silicon oxide itself, has severely limited usefulness to the laboratory.

Researchers built the material from the ground up, rather than coating a nanoscale tip with wear-resistant materials. The collaboration used a molding technique to fabricate monolithic tips on standard silicon microcantilevers. A bulk processing technique that has the potential to scale up for commercial manufacturing is available.

Robert Carpick, professor in the Department of Mechanical Engineering and Applied Mechanics at Penn, and his research group had previously shown that carbon-based thin films, including diamond-like carbon, had low friction and wear at the nanoscale; however, it has been difficult to fabricate nanoscale structures made out of diamond-like carbon until now.

Understanding friction and wear at the nanoscale is important for many applications that involve nanoscale components sliding on a surface.

"It is not clear that materials that are wear-resistant at the macroscale exhibit the same property at the nanoscale," lead author Harish Bhaskaran, who was a postdoctoral research at IBM during the study, said.

Defects, cracks and other phenomena that influence material strength and wear at macroscopic scales are less important at the nanoscale, which is why nanowires can, for example, show higher strengths than bulk samples.


'/>"/>

Contact: Jordan Reese
jreese@upenn.edu
215-573-6604
University of Pennsylvania
Source:Eurekalert  

Related biology technology :

1. Nanotechnologists gain powerful new materials probe
2. WellGen, Inc. and RFI Ingredients to Collaborate on Therapeutic Nutrition Opportunities
3. Start Locally, Collaborate to Increase Food Security, Says DuPont Leader to U.N. Group
4. iPierian to Collaborate With Johns Hopkins University on $3.7 Million NIH Grand Opportunities Grant
5. Nanosystems institute at UCLA, Photron to collaborate on specialized instrumentation
6. Genedata and the Institute of Experimental Medicine, Academy of Sciences of the Czech Republic Collaborate on Asthma Bronchiale Project
7. Burrill & Company and WR Hambrecht + Co to Collaborate on OpenIPO(R) Transactions
8. Peptimmune to Collaborate on Dengue Virus Vaccine and Point-Of-Care Diagnostic With Two DOD Biomedical Research Facilities
9. Cardea Technology Inc and Optasia Medical Ltd Announce Plans to Collaborate to Optimize Their Vertebral Fracture Assessment Tools
10. Two Lehigh Valley Healthcare Leaders Collaborate to Deliver Safer, High-Quality Care to the Community
11. Cellworks Group and ISP Personal Care Collaborate to Demonstrate Effectiveness of Proteomics-Based Computer Modeling of Skin Biology
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nanotechnologists from Penn collaborate to form near-frictionless diamond material
(Date:5/23/2017)... ... May 23, 2017 , ... Bacterial biofilms, surface adherent communities of bacteria that ... ranging from food poisoning and catheter infections to gum disease and the rejection of ... billions of dollars per year, there is currently a paucity of means for preventing ...
(Date:5/22/2017)... ... May 22, 2017 , ... Cancer diagnostics and pathology ... B2 at the Association for Pathology Informatics Annual Summit at the ... demonstrating its Cancer Diagnostic Cockpit and Consultation Portal, Inspirata will present research it ...
(Date:5/18/2017)... , ... May 18, 2017 , ... ... on April 28, 2017 at the Prince Of Wales Private Hospital. The procedure ... at level C6-C7. The patient failed conservative treatments prior to undergoing surgery. , ...
(Date:5/18/2017)... ... May 17, 2017 , ... Cognition Corporation ( ... just released version 9.0 of the Cognition Cockpit platform. , “Our whole team ... David Cronin, CEO of Cognition. “We’re thrilled to finally be able to release ...
Breaking Biology Technology:
(Date:4/13/2017)... , April 13, 2017 According to a new ... Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, ... IAM Market is expected to grow from USD 14.30 Billion in 2017 ... (CAGR) of 17.3%. ... MarketsandMarkets Logo ...
(Date:4/6/2017)... , April 6, 2017 Forecasts ... ANPR, Document Readers, by End-Use (Transportation & Logistics, Government ... Oil, Gas & Fossil Generation Facility, Nuclear Power), Industrial, ... Other) Are you looking for a definitive ... ...
(Date:4/3/2017)... 2017  Data captured by IsoCode, IsoPlexis ... a statistically significant association between the potency ... and objective response of cancer patients post-treatment. ... whether cancer patients will respond to CAR-T ... as to improve both pre-infusion potency testing and ...
Breaking Biology News(10 mins):