Navigation Links
Nanotube forests grown on silicon chips for future computers, electronics
Date:10/2/2007

ing the heat-transfer properties."

The catalyst particles are made of "transition metals," such as iron, cobalt, nickel or palladium. Because the catalyst particles are about 10 nanometers in diameter, they allow the formation of tubes of similar diameter.

The branching dendrites are tipped with molecules called amines, which act as handles to stick to the silicon surface.

"This is important because for heat-transfer applications, you want the nanotubes to be well-anchored," Amama said.

Researchers usually produce carbon nanotubes separately and then attach them to the silicon chips or mix them with a polymer and then apply them as a paste.

"Our direct growth approach, however, addresses the critical heat-flow path, which is between the chip surface and the nanotubes themselves," Fisher said. "Without this direct connection, the thermal performance suffers greatly."

Because the dendrimers have a uniform composition and structure, the researchers were able to control the distribution and density of catalyst particles.

The research team also has been able to control the number of "defect sites" in the lattice of carbon atoms making up the tubes, creating tubes that are more flexible. This increased flexibility causes the nanotube forests to conform to the surface of the heat sink, making for better contact and improved heat conduction.

"The tubes bend like toothbrush bristles, and they stick into the gaps and make a lot of real contact," Cola said.

The carbon nanotubes were grown using a technique called microwave plasma chemical vapor deposition, a relatively inexpensive method for manufacturing a thermal-interface material made of carbon nanotubes, Fisher said.

"The plasma deposition approach allows us great flexibility in controlling the growth environment and has enabled us to grow carbon nanotube arrays over a broad range of substrate temperatures," Fisher said.


'/>"/>

Contact: Emil Venere
venere@purdue.edu
765-494-4709
Purdue University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Biodiversity threatened as forests become islands of green, UW professor says
2. Human stem cells grown free of animal contamination
3. Conference Zeroes in on Homegrown Innovation - 20th Life Science & Venture Conference Full of High-Tech Insights
4. What makes Silicon Valley so different?
5. New Silicon Pastures director envisions more home cooking for Wisconsin angels
6. Canadian firm acquires Silicon Logic
7. Study explains unexpected conductivity of nanoscale silicon
8. Silicon Logic Engineering Ramps Up Custom Chips
9. Silicon Logic Teams Up to Save Money
10. Silicon Logic Enables High-Speed Communication
11. The RFID crystal ball: Will the chips eventually talk to us, too?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/19/2014)... 18, 2014 Ed Bilsky, Ph.D., vice ... Center for Excellence in the Neurosciences (CEN), and professor ... been selected as a member of the prestigious Dana ... neuroscientist from Maine to receive this honor. , ... entirely by the Dana Foundation. Its mission is ...
(Date:12/19/2014)... The empty capsules market is experiencing growth ... technological innovations in the empty capsules market. The ... growth of the empty capsules market. , Get ... of Report , The report will enrich both ... to gauge the pulse of the market which ...
(Date:12/19/2014)...   ISN has released its third annual ... publication series. With data aggregated from over eight ... within its online contractor management platform, ISNetworld, this three-part ... (KPI) statistics. The Contractor ... is available in two industry specific volumes: Oil ...
(Date:12/17/2014)... 16, 2014 “Never say, ‘I ... Universität Marburg’s Department of Physics, advises young women ... newly released SPIE Women in Optics 18-month ... shy to ask questions.” , In the annual ... mathematics) occupations ranging from university professor and laboratory ...
Breaking Biology Technology:UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 2UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 3Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 2Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 3Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 4ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 2ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 3Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 3
... , from rat lung, recombinant, , , , , , , ... Pack Size, , , ... , 3335402, 10000 units (5 vials of 2000 ... , Package Inserts/Product , Instructions, , ...
... , , for amplification of 520 kb targets from eukaryotic genomes Cat. ... , Cat. No. 1 681 842 2 x 250 units , ... , , , Description , , , ... PCR buffers for optimal amplification of different DNA fragment lengths: , ...
... , , , , , , , Which ... , , , ... , , , ... <a , ...
Cached Biology Technology:Expand Long Template PCR System 2Find the optimal product for your PCR application 2
(Date:11/21/2014)... -- Earlier this year Donald Spector , Chairman of ... the most prolific inventors in the world, got a ... to third party agencies. Spector envisioned this technology even ... earliest known patents in this area. Now major technology ... care, elder care and hospital applications. This technology has ...
(Date:11/21/2014)... Nov. 20, 2014   Atmel® Corporation (NASDAQ: ... (MCU) and touch technology solutions, today launched the industry,s ... with the widest V cc range from 1.7V ... and faster I 2 C bus communication speeds, and ... memory making them ideal for consumer, industrial, computer, and ...
(Date:11/18/2014)... Md. , Nov. 17, 2014 The Parenteral ... and U.S. regulatory agencies will speak and at least seven ... Metrics Conference at the Omni Shoreham Hotel in ... pleased once again to have significant support from the regulatory ... Europe in our effort to help ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2
... to the results of a recent U.S. study, investigators ... and a potentially life-threatening form of high blood pressure, ... Journal of Infectious Diseases, now available online. , The ... human herpesvirus 8 (HHV-8), also known as the Kaposi's ...
... scientists have coaxed human embryonic stem cells to become ... messages from the brain to the rest of the ... 30, 2005) in the journal Nature Biotechnology by scientists ... provide critical guideposts for scientists trying to repair damaged ...
... containing billions of donor kidney cells will help intensive care ... Medical College of Georgia. , MCG Medical Center has joined ... country to evaluate the efficacy of the renal assist device, ... renal failure and a principal investigator on the study. , ...
Cached Biology News:Association of herpesvirus with lung disorder questioned 2Wisconsin scientists grow critical nerve cells 2Wisconsin scientists grow critical nerve cells 3Bioartificial kidney under study at MCG 2Bioartificial kidney under study at MCG 3
... Genomics Solution is a comprehensive suite ... visualization specifically designed to reliably extract ... high-dimensional genomic studies containing thousands of ... memory efficient and will analyze large ...
...
...
Hepatocyte Differentiation Environment...
Biology Products: