HOME >> MEDICINE >> NEWS
Smart lights, nonstick implants and 100th birthday of electronics at science & technology meeting

into a silicon wafer to create electrically active regions that are either electron-rich or electron-poor. Unfortunately, current ion-implantation methods cannot make 10-nm-deep pn junctions without inadvertently moving silicon atoms into some of the spots intended for dopants.

Now, University of Illinois researchers (Edmund Seebauer, eseebaue@uiuc.edu) are using surface chemistry to come to the rescue. In computer simulations, they showed how removing surface layers such as silicon dioxide frees up the dangling bonds. Silicon atoms then preferentially rise to the surface while tending to leave the dopant atoms in place. Verified in subsequent experiments, this idea for "defect engineering" has been shown to be a feasible solution for using traditional ion-implantation technology to make smaller-scale silicon-based electronic devices. (Paper EM-TuA7, Tuesday, November 16, 2004, 3:20 PM, Room 304B.)

[Lay-language version of meeting paper at http://www2.avs.org/symposium/anaheim/pressroom/seebauer.pdf ]

V. NOVEL QUASICRYSTAL FRICTION PROPERTIES
Quasicrystals, solid materials whose atoms arrange themselves in five- or 10-sided building blocks (providing what's called five- or 10-fold symmetry) and then form 12-sided (dodecahedral) grains, seem to exhibit less friction than do many other materials. Quasicrystals' highly complex atomic patterns are partly repeating (periodic) and partly nonrepeating (aperiodic). For the past ten years no explanation for their reduced friction has been found. Does it arise from some macroscopic cause---hardness or surface chemistry, say---or from some fundamental property related to the exotic quasicrystal structure? J.Y. Park and his colleagues at Lawrence Berkeley Laboratory and Ames Laboratory have looked at this issue by dragging a probe microscope across a sample. What
'"/>

Contact: Ben Stein
bstein@aip.org
301-209-3091
American Institute of Physics
27-Sep-2004


Page: 1 2 3 4 5 6 7 8 9

Related medicine news :

1. Smart immune cells kill more cancer
2. Smart virus eliminates brain cancer in animal experiments
3. Smart solutions for clearer vision
4. Smart Start achieving goals, UNC center report indicates
5. Smart scalpel detects cancer cells in seconds
6. Wine Drinkers Consume Heart-Smart Diets
7. Enhancing Night Visibility Using UV Technology To Be Tested On Virginia Techs Smart Road
8. Infection in breast implants
9. Breast reconstruction with implants after mastectomy doesnt hurt survival chances
10. Blocking molecules protects health of implants
11. Custom-built facial implants helpful for patients with HIV and facial wasting syndrome

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/30/2021)... , ... March 29, 2021 , ... ... the 21st Century , A Virtual Workshop Presented by WCG FDAnews and Cerulean ... 4:30 pm EDT, https://wcg.swoogo.com/modern-sop-and-quality-systems , Are one’s SOPs written for the ...
(Date:3/30/2021)... ... March 29, 2021 , ... According to data released ... reproductive age (13-44) in need of publicly funded contraception live in counties impacted by ... Colorado’s 64 counties have lost some of their Title X resources. , The ...
(Date:3/30/2021)... ... March 29, 2021 , ... Health Literacy Innovations (HLI), a ... confusion due to low health literacy today announces a new partnership with the ... work with ACAP’s member Safety Net Health Plans, those that provide comprehensive health ...
(Date:3/30/2021)... ... ... Dr. Colin Campbell is proud to announce the 1 year anniversary in their new state ... internal medicine and is a primary care specialist who has been practicing for 23 years. ... keep South Jersey healthy one patient at a time. , “Over the past year, Dr. ...
(Date:3/30/2021)... ... March 30, 2021 , ... The COVID-19 ... and survivors; their families; and their caregivers. Crossroads4Hope is addressing the needs of ... emotional support system, MyGo2Support, which meets needs of people impacted by cancer, no ...
Breaking Medicine News(10 mins):
(Date:3/30/2021)... ... March 29, 2021 , ... The University of Texas Health Science Center ... San Antonio Multispecialty and Research Hospital, a destination center for research and treatment of ... In a nod to the COVID-19 pandemic, the ceremony was held virtually. , William ...
(Date:3/30/2021)... ... March 29, 2021 , ... Iora Health ... primary care, has partnered with Devoted Health , one of the fastest-growing ... across Maricopa County and provides seniors with the highest-quality care and experience possible, ...
(Date:3/30/2021)... CITY (PRWEB) , ... March 29, 2021 , ... ... has joined the Vaccine Credential Initiative (VCI), a group bringing together leading health ... record of vaccination status, based on open, interoperable standards. By joining the VCI ...
Breaking Medicine Technology:
Cached News: