Navigation Links
New player in electron field emitter technology makes for better imaging and communications
Date:3/8/2013

Scientists at the National Institute of Standards and Technology (NIST) and the University of Maryland, College Park, have built a practical, high-efficiency nanostructured electron source. Described in the journal Nanotechnology*, this new, patent-pending technology could lead to improved microwave communications and radar, and more notably to new and improved X-ray imaging systems for security and health-care applications.

While thermionic electron sources such as the hot filaments inside cathode ray tubes have largely been replaced by LEDs and liquid crystals for display screens and televisions, they are still used to produce microwaves for radar and X-rays for medical imaging. Thermionic sources use an electric current to boil electrons off the surface of a wire filament, similar to the way an incandescent light bulb uses an electric current to heat a wire filament until it glows.

And like an incandescent light bulb, thermionic sources are generally not very energy efficient. It takes a lot of power to boil off the electrons, which spew in every direction. Those that aren't lost have to be captured and focused using a complicated system of electric and magnetic fields. Field emission electron sources require much less power and produce a much more directional and easily controllable stream of electrons.

To build their field emission source, the NIST team took a tough materialsilicon carbideand used a room-temperature chemical process to make it highly porous like a sponge. They then patterned it into microscopic emitting structures in the shape of pointed rods or sharp-edged fins. When an electric field is applied, these novel field emitters can produce an electron flow comparable to a thermionic source but without all the disadvantagesand with many advantages.

According to co-inventor Fred Sharifi, the new field emitters have inherently fast response times compared with thermionic sources, and the absence of h
'/>"/>

Contact: Mark Esser
mark.esser@nist.gov
301-975-8735
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. ResearchMoz: Vaccine Production Market (Trends, Techniques, Key Players, Spending Estimates and Forecasts)
2. BioInformatics LLC New Market Report – Opportunities for New Players in the Growing Stem Cell Market
3. Lucintel Report Outlines Significant Growth Opportunities for Continuous Fiber Thermoplastic Industry Players During 2012-2017
4. Enterprise Mobility players NuWare & VeliQ form a global partnership to deliver mPaaS solutions
5. Are electron tweezers possible? Apparently so
6. Researching graphene nanoelectronics for a post-silicon world
7. UCSB professor receives award for graphene electronics research
8. Researchers develop one of the worlds smallest electronic circuits
9. New path to flex and stretch electronics
10. Nanowiggles: Scientists discover graphene nanomaterials with tunable functionality in electronics
11. Smaller and more powerful electronics requires the understanding of quantum jamming physics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New player in electron field emitter technology makes for better imaging and communications
(Date:6/26/2015)... NEW YORK and MUMBAI, India ... (TCS), (BSE: 532540, NSE: TCS) a leading global IT ... has been designated as a Leader in Worldwide Life ... IDC, in the " IDC MarketScape: Worldwide Life Science ... 2015) report. The report evaluated eight ...
(Date:6/26/2015)... , June 23, 2015 ... the addition of the "Global Cancer Biosimilars ... Market introduction of cancer biosimilar is ... commercialization potential. Chemotherapeutic drugs have dominated the cancer ... have been introduced in past few years. They ...
(Date:6/26/2015)... -- The report "Biolubricants Market by Type ... Chainsaw oils, Mold Release Agents), End Use (Industrial, Commercial ... and Forecasts to 2020" published by MarketsandMarkets, The Biolubricants ... at a CAGR of 6.27% between 2015 and 2020. ...   66 Figures spread through 170 Pages and in-depth ...
(Date:6/25/2015)... Last June, a dedicated global team of Ebola researchers began ... sequencing. Their research, which was written on the research platform ... (Park 2015) , reveals critical information about how ... recent Ebola outbreak. Today Authorea is pleased to ... edit history of the paper are available to the ...
Breaking Biology Technology:TCS Recognized as a Leader in Life Sciences R&D Risk-Based Monitoring by IDC MarketScape 2TCS Recognized as a Leader in Life Sciences R&D Risk-Based Monitoring by IDC MarketScape 3TCS Recognized as a Leader in Life Sciences R&D Risk-Based Monitoring by IDC MarketScape 4Global Cancer Biosimilars Market Opportunity Outlook 2Global Cancer Biosimilars Market Opportunity Outlook 3Biolubricants Market Worth $2,972.13 Million by 2020 2Biolubricants Market Worth $2,972.13 Million by 2020 3Open Science Takes Major Leap Forward 2
... RNA Isolation Kit , Catalog #732-6370 , ... Method , ... Collect fresh virus and isolate RNA as , quickly as possible; store at ... -70 to -80C. , Cell Lysis , ...
... , , , AquaPure RNA Isolation Kit , ... Method , Cell Lysis ... Oak Ridge centrifuge , tube (or other tube rated for high speed) ... sputum, synovial fluid, , urine, whole blood). , ...
... Tuija Kekarainen and Jari P. T. Valkonen, Department of Plant Biology, Swedish,University of ... , Introduction ... method widely used for gene transfer , ... Shark et al. 1991, Williams et al. 1991, Zelenin et al. 1989). , ...
Cached Biology Technology:Total RNA Isolation: 100 l Viral Sample From Cultured-Cell Supernatant Containing Virus 2Total RNA Isolation From 500 l Body Fluid 2Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 2Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 3Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 4Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 5Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 6Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 7Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 8Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun 9
(Date:6/25/2015)... SALT LAKE CITY , June 25, 2015 /PRNewswire/ ... the first steps toward a healthier, happier life. That,s ... app is designed to do. The cutting-edge, portable health ... and offers real-life solutions to help improve your lifestyle ... Sellers Association awards dinner and gala Wednesday night, USANA,s ...
(Date:6/24/2015)... YORK , June 24, 2015 The ... rate. The major drivers for the market include growth ... number of new drug launches. Over the years, the ... increased. Between 2001 and 2010, the FDA approved 225 ... according to WIPO, Europe accounted ...
(Date:6/24/2015)... SAN JOSE, Calif. , June 24, 2015 ... leading developer of human interface solutions, today announced ... fingerprint sensor to provide secure authentication for its ... Having recently reached more than 200 million shipments ... shipment with Sharp reinforces Synaptics, strength, scalability and ...
Breaking Biology News(10 mins):@USANAinc's Personalized Nutrition Program Wins Industry Innovation Award 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 3Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 4Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2
... for Experimental Biology (FASEB) announces the opening of registration ... the Immune System. The 2013 FASEB Science Research ... be focusing on recent advances in our understanding of ... recent years, investigations aimed at understanding the innate and ...
... of American Societies for Experimental Biology (FASEB) announces the ... Arf and Rab Family G Proteins. The 2013 ... is an important and unique scientific conference in which ... organelle biogenesis will be explored within the context of ...
... 24 edition of PLOS Pathogens , Saint Louis University ... the University of Pittsburgh report a breakthrough in the pursuit ... virus. Researchers were able to measure and then block a ... advantage of known similarities with another major pathogen, HIV. ...
Cached Biology News:In a fight to the finish, Saint Louis University research aims knockout punch at hepatitis B 2In a fight to the finish, Saint Louis University research aims knockout punch at hepatitis B 3In a fight to the finish, Saint Louis University research aims knockout punch at hepatitis B 4In a fight to the finish, Saint Louis University research aims knockout punch at hepatitis B 5
... The Neural Stem Cell Expansion Kit - Neurosphere ... neural stem cell expansion as neurospheres in ... specially formulated N-2 Plus Media Supplement, which has ... K.K. et al . (1996) Genes & ...
DNase I (Deoxyribonuclease I) digests single- and double-stranded DNA to oligodeoxyribonucleotides. Ribonuclease activity has been reduced to non-detectable levels....
... E. coli strain containing an overproducing clone ... Reverse Transcriptase catalyzes the polymerization of DNA ... Full-length copies of large mRNAs, >10 kb, ... a much lower RNase H activity than ...
... RQ1 RNase-Free DNase is a preparation ... or double-stranded DNA to produce 3-hydroxyl ... use in applications where maintaining the ... DNase is qualified for use with ...
Biology Products: