Navigation Links
Are electron tweezers possible? Apparently so
Date:11/9/2011

Not to pick up electrons, but tweezers made of electrons. A recent paper* by researchers from the National Institute of Standards and Technology (NIST) and the University of Virginia (UVA) demonstrates that the beams produced by modern electron microscopes can be used not just to look at nanoscale objects, but to move them around, position them and perhaps even assemble them.

Essentially, they say, the tool is an electron version of the laser "optical tweezers" that have become a standard tool in biology, physics and chemistry for manipulating tiny particles. Except that electron beams could offer a thousand-fold improvement in sensitivity and resolution.

Optical tweezers were first described in 1986 by a research team at Bell Labs. The general idea is that under the right conditions, a tightly focused laser beam will exert a small but useful force on tiny particles. Not pushing them away, which you might expect, but rather drawing them towards the center of the beam. Biochemists, for example, routinely use the effect to manipulate individual cells or liposomes under a microscope.

If you just consider the physics, says NIST metallurgist Vladimir Oleshko, you might expect that a beam of focused electronssuch as that created by a transmission electron microscope (TEM)could do the same thing. However that's never been seen, in part because electrons are much fussier to work with. They can't penetrate far through air, for example, so electron microscopes use vacuum chambers to hold specimens.

So Oleshko and his colleague, UVA materials scientist James Howe, were surprised when, in the course of another experiment, they found themselves watching an electron tweezer at work. They were using an electron microscope to study, in detail, what happens when a metal alloy melts or freezes. They were observing a small particlea few hundred microns wideof an aluminum-silicon alloy held just at a transition point where it was partially molte
'/>"/>

Contact: Michael Baum
baum@nist.gov
301-975-2763
National Institute of Standards and Technology (NIST)
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Three for the price of one - mobile electrons multiplied in quantum dot films
2. NTU and A*STAR Institute of Microelectronics develop cheaper yet efficient thin film solar cells
3. Physicists to develop new way of electronic computing
4. Bold approach could change electronics industry
5. Like fish on waves: electrons go surfing
6. FDA Approves Electronic Common Technical Document (eCTD) for Laureates Regulatory Submissions
7. The quantum tunneling effect leads electron transport in porphyrins
8. NIST uncovers reliability issues for carbon nanotubes in future electronics
9. Smart skin: Electronics that stick and stretch like a temporary tattoo
10. Material created at Purdue lets electrons dance and form new state
11. Graphenes quantum leap takes electronics a step closer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)...   Cypher Genomics, Inc., the leading genome ... SQNM ), the leading molecular diagnostics company, today ... prenatal tests (NIPT). Through this agreement, Sequenom will ... advance analysis of clinically-relevant fetal sub-chromosomal variants detected ...
(Date:1/22/2015)... Jan. 22, 2015  Derma Sciences, Inc. (Nasdaq: ... on advanced wound care, announces that AMNIOEXCEL® and ... been added to the Premier, Inc. Regenerative Skin ... for the AMNIOEXCEL® and AMNIOMATRIX® product lines, which ...
(Date:12/24/2014)... , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, Inc. (NASDAQ: PTBI, ... announced the closing of an underwritten public offering of 3,500,000 ... an aggregate 3,500,000 shares of common stock, at an offering ... warrants have a per share exercise price of $5.00, are ...
(Date:12/24/2014)... “Preparative & Process Chromatography Market by Instrument ... Buffers, Valves, Guages, Seals), Accessories, Services, End User ... 2019” provides a detailed overview of the major ... strategies impacting the preparative and process chromatography market ...
Breaking Biology Technology:Cypher Genomics and Sequenom Announce Development Agreement 2Cypher Genomics and Sequenom Announce Development Agreement 3Cypher Genomics and Sequenom Announce Development Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4
... June 29, 2011 Verenium Corporation (Nasdaq: VRNM ... and commercialization of high-performance enzymes, today announced the signing of ... the Torrey Pines area of San Diego, CA.  The lease ... the build out of the new facility and the expiration ...
... Sanford Rose Associates® - San Francisco, a specialized executive ... Life Sciences arena, welcomes Eduard Alberts, Ph.D. as Vice ... 20 years of experience and success in the life ... across different-sized companies and a wide array of cultures. ...
... N.J., June 29, 2011 Cord Blood America, Inc ... ), the umbilical cord blood stem cell preservation company ... cells to families nationwide and internationally, announced today it has ... Newark, New Jersey, to offer the storage of umbilical cord ...
Cached Biology Technology:Verenium Announces Signing of Lease for New Office and Lab Space 2Verenium Announces Signing of Lease for New Office and Lab Space 3Eduard Alberts, Ph.D. Joins Sanford Rose Associates - San Francisco 2Cord Blood America Enters Agreement With Horizon Healthcare Services, Inc. to Offer Stem Cell Collection Services to Its Members 2
(Date:12/19/2014)... Research and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ) has ... Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report" ... http://photos.prnewswire.com/prnh/20130307/600769 Following the acquisition of ... feature with the iPhone 5S. It is currently the ...
(Date:12/19/2014)... Calif. , Dec. 18, 2014  23andMe, Inc., the leading ... that pinpoints fine-scale differences in genetic ancestry of individuals from ... Since immigrants first arrived more than four hundred years ago, ... a meeting place for peoples from different continents. This study ...
(Date:12/17/2014)... Dec. 15, 2014 Research and Markets ( ... "Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor ... http://photos.prnewswire.com/prnh/20130307/600769 Based on ... Samsung introduces for the first time a fingerprint sensor ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... as 12 percent of the worlds human-caused greenhouse gas emissions ... made from plants and other organic materials. Thats more than ... were burned to generate energy, concludes a study published today ... that biochar can play a significant role in the solution ...
... that watching paint dry might not be as boring as the ... come up with a new technique to study the mechanics of ... process is far from mundane. In the August 9-13 edition ... the team presents a new way to image and analyze the ...
... Single-molecule sequencing technology has detected and quantified novel small ... of the gene-translating molecules, confirming a long-held but unproven ... by copying RNA molecules directly. The findings were reported ... University of Pittsburgh School of Medicine , Helicos Biosciences ...
Cached Biology News:Charcoal takes some heat off global warming 2Charcoal takes some heat off global warming 3Charcoal takes some heat off global warming 4Charcoal takes some heat off global warming 5Scientists show there's nothing boring about watching paint dry 2Human cells can copy not only DNA, but also RNA, says team from Pitt, Helicos BioSciences 2
Designed for use with the Agencourt CleanSEQ and Agencourt AMPure 384-well SPRI reagent kits. For use with 384-well thermal cycling plates....
... ScriptCap™ m7G Capping system ... and all of the components ... 0 on the end of ... These kits feature high efficiency ...
... Life Science FLA-5100 imaging system allows imaging ... as 40 x 46cm at a pixel ... system is especially suitable for protein electrophoresis ... analysis for genomics., Fuji s FLA-5100 includes ...
... The new FLA-5000 imaging ... and radioisotopic samples as large ... resolutions as low as 25 ... suitable for protein electrophoresis in ...
Biology Products: