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While thermionic electron sources such as the hot filaments inside cathode ray tubes have largely been replaced by LEDs and liquid crystals for display screens and televisions, they are still used to produce microwaves for radar and X-rays for medical imaging.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:5/28/2015)... , May 28, 2015 ... ) has announced the addition of Jain ... - Technologies, Markets, and Companies" to ... , This report deals with ... aimed at improving patient care by monitoring ...
(Date:5/28/2015)... -- Research and Markets( http://www.researchandmarkets.com/research/l9dqwt/animal_genetics ) has announced the ... by Testing services - Global Forecast to 2020" ... genetics market is estimated to be worth around $2.5 ... 8-9% during the forecast period of 2014 to 2020 ... animal protein consumption, increasing adoption of advanced genetic technologies ...
(Date:5/28/2015)... N.J. , May 28, 2015 Celsion ... that it has received commitments from two institutional healthcare ... of the Company,s common stock in an at-the-market registered ... to purchase common stock. The Company entered ... to which the Company agreed to sell an aggregate ...
(Date:5/28/2015)... 2015  PDS Biotechnology Corp. announces preliminary data ... HPV-16, has generated strong T-cell responses in pre-cervical ... is treated by surgical removal of lesions however, ... alternative. Results show that it primes and activates ... and kill precancerous and cancerous cells that display ...
Breaking Biology Technology:Global Therapeutic Drug Monitoring Market 2015-2024 2Global Animal Genetics (Canine, Equine, Poultry, Porcine, Bovine, and Genetic Material) Market 2015 - Global Forecast to 2020 2Celsion Corporation Announces $8 Million At-The-Market Registered Direct Offering 2Celsion Corporation Announces $8 Million At-The-Market Registered Direct Offering 3PDS Biotechnology reports positive Phase I clinical trial results in proprietary HPV-Cancer Immunotherapy 2
... your files? Desktop search applications bring some of the same ... but the market is getting more crowded. , ,The University ... search tools for usability, accuracy, versatility, efficiency, security and enterprise ... , Copernic came out the overall winner, ceding ground ...
... , a home-grown Milwaukee medical device company, finished a funding ... take advantage of Wisconsin's new tax credits for investors, which ... , ,Neurognostics oversubscribed on its $1 million angel finance round ... As a tech-based research and development company, the firm falls ...
... month, I had the privilege of moderating a thought-provoking ... ever-increasing mobile work force. Hosted by IP-telephony leader Avaya, ... executives and customers, and media. If there was any ... the expectation of an always on, always connected work- ...
Cached Biology Technology:Milwaukee firm among first to use Act 255 tax credits in investor pitch 2Milwaukee firm among first to use Act 255 tax credits in investor pitch 3Milwaukee firm among first to use Act 255 tax credits in investor pitch 4Most of us still struggle with mobility 2Most of us still struggle with mobility 3Most of us still struggle with mobility 4
(Date:4/17/2015)... Increasing adoption in ... to drive biometric systems market in ... According to a recently released TechSci Research ... biometric systems market in Saudi Arabia ... CAGR of over 22% through 2020. The market ...
(Date:4/14/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... on the growing mobile commerce market, announces that its ... New York Design Awards under the category  ,Product Design ... Design Awards are part of a global multi-disciplinary awards ... from the marketplace, industry and judging panel. Winners will ...
(Date:4/13/2015)... -- higi, a leading cloud-based consumer engagement platform that provides ... their communities around health and wellness, announced today the ... ... convenient vehicle to receive validated health information from consumers. ... API will allow higi,s trusted partners, on a user ...
Breaking Biology News(10 mins):Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 2NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 3higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3
... of Gothenburg have discovered a new sea anemone that is ... similar anemones causes skin problems for sea bathers in the ... at the University of Gothenburg have been following the invasion ... years. They have now discovered that it contains larvae from ...
... of zoonotic pathogens from previously unrecognized wildlife reservoirs remains ... the past century, numerous pathogens have emerged and re-emerged ... every 18 months, and the majority have zoonotic origins ... West Nile Virus. The National Institute for ...
... KTN is organising a conference and exhibition, ,Intelligent Sensing ... systems and instrumentation on 16 June at IET, Savoy ... will update you on sensor technology requirements and developments ... The industrial and research role of sensors and associated ...
Cached Biology News:New parasite could be late summer beach pest 2Conference to discuss sensing technology developments and opportunities 2
... Panels were designed for full-length gene cloning ... to identify the desired cDNA clone. The ... 96-well "Master Plate," where each well contains ... the positive well(s) by gel electrophoresis of ...
... cDNA Library Panels were designed for full-length ... of PCRs to identify the desired cDNA ... in a 96-well "Master Plate," where each ... Having identified the positive well(s) by gel ...
... Rapid-Screen cDNA Library Panels were designed for ... sets of PCRs to identify the desired ... performed in a 96-well "Master Plate," where ... clones. Having identified the positive well(s) by ...
... the macro- and micronutrients as ... (1962) and the vitamins as ... (1968). Preparation Quantity Equivalency: Formulated ... powder per liter of medium. ...
Biology Products: