Navigation Links
NRL demonstrates high durability of nanotube transistors to the harsh space environment
Date:9/18/2012

WASHINGTON--U.S. Naval Research Laboratory electronics science and technology engineers demonstrate the ability of single walled carbon nanotube transistors (SWCNTs) to survive the harsh space environment, investigating the effects of ionizing radiation on the crystalline structures and further supporting the development of SWCNT-based nanoelectronics for use in harsh radiation environments.

"One of the primary challenges for space electronics is mitigating the susceptibility of prolonged exposure to radiation that exists in the charged particle belts that encircle Earth," said Cory Cress, materials research engineer. "These are the first controlled demonstrations showing little performance degradation and high tolerance to cumulative ionizing radiation exposure."

Radiation effects take two forms, transient effects and cumulative effects. The former, referred to as single effect transients (SETs), result from a direct strike by an ionizing particle in space that causes a current pulse in the device. If this pulse propagates through the circuit it can cause data corruption that can be extremely detrimental to someone that relies on that signal, such as a person using GPS for navigation. NRL researchers have recently predicted that such effects are nearly eliminated for SWCNT-based nanoelectronics due to their small size, low density, and inherent isolation from neighboring SWCNTs in a device.

The cumulative effects in traditional electronics results from trapped charges in the oxides of the devices, including the gate oxide and those used to isolate adjacent devices, the latter being primary source of radiation-induced performance degradation in state-of-the-art complementary metaloxide semiconductor (CMOS) devices. The effect is manifested as a shift in the voltage needed to turn the transistor on or off. This initially results in power leakage, but can eventually cause failure of the entire circuit.

By developing a SWCNT structure with a thin gate oxide made from thin silicon oxynitride, NRL researchers recently demonstrated SWCNT transistors that do not suffer from such radiation-induced performance changes. This hardened dielectric material and naturally isolated one-dimensional SWCNT structure makes them extremely radiation tolerant.

The ability for SWCNT-based transistors to be both tolerant to transient and cumulative effects potentially enables future space electronics with less redundancy and error-correction circuitry, while maintaining the same quality of fidelity. This reduction in overhead alone would greatly reduce power and improve performance over existing space-electronic systems even if the SWCNT-based transistors operate at the same speed as current technologies. Even greater benefits are foreseeable in the future, once devices are developed that exceed the performance of silicon-based transistors.


'/>"/>

Contact: Daniel Parry
nrl1030@ccs.nrl.navy.mil
202-767-2541
Naval Research Laboratory
Source:Eurekalert  

Related biology technology :

1. NKTR-102 Demonstrates Synergistic Anti-Tumor Activity in Combination with Pegylated Liposomal Doxorubicin in Platinum-Resistant Ovarian Cancer
2. AtheroNova Inc. Preclinical Study Demonstrates 95% Reduction in Arterial Plaque Formation
3. Post Heart Attack Recovery Not Aided By Stem Cell Injections, But Trial Demonstrates Promise
4. Entinostat Demonstrates Activity in Hodgkins Lymphoma
5. OrbusNeichs Combo Dual Therapy Stentâ„¢ Demonstrates Favorable Clinical and Safety Outcomes at 12-Month Follow-Up
6. Nitor Group Demonstrates Direct Product Suite at Direct Implementation and Adoption Summit May 31-June 1
7. New England Biolabs Demonstrates Support for Interactive Scientific Literature by Collaborating with AQnowledge
8. Hark! Group demonstrates first heralded single photon source made from silicon
9. Dyadic Demonstrates Industry-leading Biofuels Enzyme Performance
10. New biosensor benefits from melding of carbon nanotubes, DNA
11. Carbon nanotube forest camouflages 3-D objects
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
NRL demonstrates high durability of nanotube transistors  to the harsh space environment
(Date:6/23/2016)... Apellis Pharmaceuticals, Inc. today announced positive ... its complement C3 inhibitor, APL-2. The trials were ... studies designed to assess the safety, tolerability, pharmacokinetics ... healthy adult volunteers. Forty subjects were ... dose (ranging from 45 to 1,440mg) or repeated ...
(Date:6/23/2016)... 23, 2016 Andrew ... http://doi.org/10.17925/OHR.2016.12.01.22 Published recently in ... journal from touchONCOLOGY, Andrew D Zelenetz , ... cancer care is placing an increasing burden on ... biologic therapies. With the patents on many biologics ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... the Pennsylvania Convention Center and will showcase its product’s latest features from June ... be presenting a scientific poster on Disrupting Clinical Trials in The Cloud during ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... new line of intelligent tools designed, tuned and optimized exclusively for Okuma CNC ... in Chicago. The result of a collaboration among several companies with expertise in ...
Breaking Biology Technology:
(Date:4/26/2016)... -- Research and Markets has announced the ...  report to their offering.  , ,     (Logo: ... forecast the global multimodal biometrics market to grow ... 2016-2020.  Multimodal biometrics is being implemented ... healthcare, BFSI, transportation, automotive, and government for controlling ...
(Date:4/14/2016)... , April 14, 2016 ... and Malware Detection, today announced the appointment of ... the new role. Goldwerger,s leadership appointment comes ... the heels of the deployment of its platform at ... behavioral biometric technology, which discerns unique cognitive and physiological ...
(Date:3/29/2016)... BOCA RATON, Florida , March 29, 2016 /PRNewswire/ ... ("LegacyXChange" or the "Company") LegacyXChange "LEGX" and SelectaDNA/CSI Protect ... Synthetic DNA in ink used in a variety of ... preventing theft. Buyers of originally created collectibles from athletes ... authenticity through forensic analysis of the DNA. ...
Breaking Biology News(10 mins):