Navigation Links
Small optical force can budge nanoscale objects
Date:11/17/2009

ITHACA, N.Y. - With a bit of leverage, Cornell researchers have used a very tiny beam of light with as little as 1 milliwatt of power to move a silicon structure up to 12 nanometers. That's enough to completely switch the optical properties of the structure from opaque to transparent.

The technology could have applications in the design of micro-electromechanical systems (MEMS) nanoscale devices with moving parts and micro-optomechanical systems (MOMS) which combine moving parts with photonic circuits, said Michal Lipson, associate professor of electrical and computer engineering.

The research by postdoctoral researcher Gustavo Wiederhecker, Long Chen Ph.D. '09, Alexander Gondarenko, Ph.D. '10, and Lipson appears in the online edition of the journal Nature and will appear in a forthcoming print edition.

Light can be thought of as a stream of particles that can exert a force on whatever they strike. The sun doesn't knock you off your feet because the force is very small, but at the nanoscale it can be significant. "The challenge is that large optical forces are required to change the geometry of photonic structures," Lipson explained.

But the researchers were able to reduce the force required by creating two ring resonators circular waveguides whose circumference is matched to a multiple of the wavelength of the light used and exploiting the coupling between beams of light traveling through the two rings.

A beam of light consists of oscillating electric and magnetic fields, and these fields can pull in nearby objects, a microscopic equivalent of the way static electricity on clothes attracts lint.

This phenomenon is exploited in "optical tweezers" used by physicists to trap tiny objects. The forces tend to pull anything at the edge of the beam to be pulled toward the center.

When light travels through a waveguide whose cross-section is smaller than its wavelength some of the light spills over, and
'/>"/>

Contact: Blaine Friedlander
bpf2@cornell.edu
607-254-8093
Cornell University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. US Government Awards Contract to Bavarian Nordic for the Development of Freeze-Dried IMVAMUNE(R) Smallpox Vaccine
2. Haft Group says Bullish Commodity Market Triggers Small and Micro-cap Upsurge
3. Smallest nanoantennas for high-speed data networks
4. Fate Therapeutics Announces Creation of Small Molecule Platform for Commercial Scale Reprogramming
5. Neogen Again Named to Forbes List of Best Small Companies
6. Small ... smaller ... smallest? ASU researchers create molecular diode
7. Researchers create smaller and more efficient nuclear battery
8. Genedata Screener Supports Small Molecule Research at the Broad Institute of Harvard and MIT
9. New NIST nano-ruler sets some very small marks
10. Poniard Pharmaceuticals Announces Pivotal Phase 3 SPEAR Trial Evaluating Picoplatin in Small Cell Lung Cancer Reaches 320th Event Target
11. Reportlinker Adds Small Molecule Kinase Inhibitors Report
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2014)... 22, 2014 Research and Markets ... Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction ... to their offering. The global molecular ... 2013, and is expected to grow at a CAGR ... biology enzymes, kits, & reagents find applications in a ...
(Date:8/22/2014)... Toronto, Canada (PRWEB) August 22, 2014 ... traits in model organisms can be accelerated by ... design and manufacturing technologies, the custom SeqCap EZ ... such research. , Mr. Watson will additionally present ... seen with commercially available human and mouse exome ...
(Date:8/21/2014)... 21, 2014 DNA vaccine pioneer ... its development of JRC-LAMP-vax, an innovative and safe potential ... IC studies began this month in Hawaii, moving the ... , The Japanese red cedar releases pollen that causes ... Mountain Cedar pollen wreaks similar havoc in Colorado, New ...
(Date:8/21/2014)... 21, 2014 2014 Deep ... is a professional and in-depth research report ... provides basic Seaweed Fertilizer information, including Seaweed ... structure as well as industry overview. This ... domestic market as well as global industry ...
Breaking Biology Technology:Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 2Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 3Efficient Identification of Protein-Coding Variants in a Model Organism Through Exome Sequencing, New Webinar Hosted by Xtalks 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 3Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 4Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 2Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 3
... Tech Coast Angels (TCA) today announced that Mike ... Board of Directors. Napoli has been a member of TCA ... Network Executive Committee for seven years, started the Inland Empire ... three years, and was chairman of two TCA Fast Pitch ...
... 2011 Cell Therapeutics, Inc. (CTI) (Nasdaq and MTA: ... WBBA Life Science Innovation Northwest Conference on Thursday, March ... of the Washington State Conference Center, Seattle, Washington. WBBA ... 201110:25 AM PST/1:25 PM EST/7:25 PM CETRoom 607, Washington ...
... of biomass to fuel requires several steps: chemical pretreatment ... acid, detoxification to remove the toxic chemicals required in ... to fuels. Virginia Tech researchers have discovered an enzyme ... infused liquid biomass (hydrolysate), meaning that the detoxification step ...
Cached Biology Technology:Mike Napoli Named New Chairman of Tech Coast Angels, Explains Enhanced Process for Entrepreneurs 2Mike Napoli Named New Chairman of Tech Coast Angels, Explains Enhanced Process for Entrepreneurs 3Enzyme cocktail could eliminate a step in biofuel process 2
(Date:8/21/2014)... A team of researchers at Louisiana ... for using affordable, consumer-grade 3D printers and ... can contain antibacterial and chemotherapeutic compounds for ... of doctoral students and research faculty from ... programs collaborated to create filament extruders that ...
(Date:8/20/2014)... Fox, a John and Rebecca Moores Professor of Biology and ... fellow in the International Society for the Study of the ... four members two from the U.S., one from France ... Fellows are elected every three years, and 36 have been ... than 20 countries, the ISSOL includes researchers from disciplines as ...
(Date:8/20/2014)... , Aug. 20, 2014 /CNW/ -  Issue ... and can quickly become life threatening for some children.    ... as 1.2 million Canadians have food allergies and this number ... cent of children are estimated to have food allergies.  ... mild skin irritations and hives to breathing difficulties and loss ...
Breaking Biology News(10 mins):Louisiana Tech University researchers use 3D printers to create custom medical implants 2Louisiana Tech University researchers use 3D printers to create custom medical implants 3UH professor named fellow by International Astrobiology Society 2Information Update - Allergens and food safety at school - What's in your child's lunch? 2Information Update - Allergens and food safety at school - What's in your child's lunch? 3
... at Albert Einstein College of Medicine of Yeshiva University ... from the Bill & Melinda Gates Foundation for their ... are Arturo Casadevall , M.D., Ph.D., who is working to ... , Ph.D., and Joan Berman , Ph.D., for their work ...
... Joseph G. Morse , a professor of entomology ... year,s recipient of the California Citrus Quality Council ... of "his steadfast dedication in the field of entomology ... For more than three decades, Morse has provided ...
... led by the University of Colorado Boulder has been awarded $9.2 ... research modifying E. coli to produce biofuels such as ... we have worked on for the past decade to the next ... and Sustainable Energy Institute, or RASEI. "In this project, we will ...
Cached Biology News:Einstein researchers receive 2 Grand Challenges Explorations grants to combat HIV and TB 2Einstein researchers receive 2 Grand Challenges Explorations grants to combat HIV and TB 3UC Riverside entomologist recognized for research in citrus entomology 2CU-led team receives $9.2 million DOE grant to engineer E. coli into biofuels 2
Anti-Kusabira Orange Monoclonal Antibody Description: 100 g Research Focus: tag Storage: -20C Shipping Temperature: 4C...
TXNL2 Antibody...
Rat polyclonal to Vitamin B3 ( Abpromise for all tested applications). Antigen: Chemical / Small Molecule, Vitamin B3 conjugated to BSA....
Rabbit polyclonal to CAMK 1D beta ( Abpromise for all tested applications). entrezGeneID: 57118 SwissProtID: Q5SQQ7...
Biology Products: