Navigation Links
Using a grating with a grade, engineers trap a rainbow
Date:6/27/2008

Engineers working in optical communications bear more than a passing resemblance to dreamers chasing rainbows.

They may not wish literally to capture all the colors of the spectrum, but they do seek to control the rate at which light from across the spectrum moves through optical circuits.

This pursuit is daunting when those circuits contain dimensions measured in nanometers.

At the nanoscale, says Qiaoqiang Gan, a Ph.D. candidate in electrical engineering at Lehigh University in Bethlehem, Pa., engineers hoping to integrate optical structures with electronic chips face a dilemma.

Light waves transmit data with greater speed and control than do electrical signals, which are hindered by the mobility of the electrons in semiconducting materials.

But light is more difficult to control at the nanoscale because of natural limits on its diffraction, or ability to resolve.

"There is a mismatch between nanoelectronics and nanophotonics," says Gan. "Because of the diffraction limit of light, optical circuits are now much larger than their electronic counterparts. This poses an obstacle to the integration of optical structures with electrical devices.

"For that reason, the dream now among photonics researchers is to make optical structures as small as possible and integrate them with electrical devices."

Gan and his colleagues have made a major contribution towards this effort by developing a relatively simple structure that can slow down or even stop light waves over a wide portion of the light spectrum.

On Friday, June 27, they published an article describing their progress in Physical Review Letters (PRL), a publication of the American Physical Society. PRL is one of the most influential international journals devoted to basic physics.

The article, titled "Ultrawide-Bandwidth Slow-Light System Based on THz Plasmonic Graded Metallic Grating Structures," is coauthored by Gan
'/>"/>

Contact: Kurt Pfitzer
kap4@lehigh.edu
610-758-3017
Lehigh University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Genzyme Boosts Quality Using Dyadem Quality Lifecycle Management
2. Iowa Resident Dies After Using Contaminated Blood Thinner
3. SurgiQuest Announces First Single Port Procedure for Ovary Removal Using AirSeal(TM) Access System
4. Cypress Systems, Inc. Launches Cancer Prevention Health Campaign Using SelenoExcell(R)
5. RiverVest Venture Partners(R), a St. Louis-Based Venture Capital Firm Focusing on Life Sciences, Closes on Fund II, Names John P. McKearn, Ph.D., Venture Partner
6. Data storage using ultra-small needles
7. Engineers make first active matrix display using nanowires
8. Significant Reductions in Mortality and Cardiovascular Events Shown Using Blood Pressure-Lowering Treatment in Those Aged 80 and Over
9. Accurate Identification of Tumor Origin Using MicroRNAs is Published by Rosetta Genomics Scientists and Collaborators in Nature Biotechnology
10. 125 Indevus Sales Representatives to Provide Community Service in New Orleans for Jericho Road Episcopal Housing Initiative
11. Allen Institute for Brain Science Launches Three New Landmark Atlas Projects Focusing on the Human Brain, Developing Brain and Spinal Cord
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/27/2014)... EASTON, Mass. , Oct. 27, 2014 /PRNewswire/ ... the "Company"), a worldwide leader in the development ... to the life sciences research market, today announced ... team presented a novel, accurate, highly reproducible, and ... time – routine high-throughput protein analysis on small ...
(Date:10/26/2014)... 26, 2014 The report "Data ... Network Security Equipment, WAN Optimization Appliances]: Global Advancements, ... the data center networking market into various segments ... The report also identifies the factors driving this ... it along with the future roadmaps. , Browse ...
(Date:10/25/2014)... 23, 2014 ViaDerma, Inc ... company devoted to bringing new products to market, ... , ViaDerma has developed an innovative, patent-pending dual ... mass transfer of pharmaceutical active ingredients to penetrate ... immediate localized therapy. The transdermal delivery method also ...
(Date:10/25/2014)... DuPont Pioneer and Perdue AgriBusiness ... double the acreage contracted for Plenish® high oleic ... crush facility in Salisbury, Md. The high oleic ... several markets including foodservice and food manufacturers looking ... For the 2015 growing season, Perdue Agribusiness will ...
Breaking Biology Technology:Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 2Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 3Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 4Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 5Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 2Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 3Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 4ViaDerma, Inc. Announces Plans to Pursue Out-Licensing Partnerships in 2015 2ViaDerma, Inc. Announces Plans to Pursue Out-Licensing Partnerships in 2015 3DuPont Pioneer, Perdue AgriBusiness Announce Plans to Double Acreage for the 2015 Plenish® High Oleic Soybean Program 2DuPont Pioneer, Perdue AgriBusiness Announce Plans to Double Acreage for the 2015 Plenish® High Oleic Soybean Program 3DuPont Pioneer, Perdue AgriBusiness Announce Plans to Double Acreage for the 2015 Plenish® High Oleic Soybean Program 4
... 21 ChemDiv Inc. and Avineuro,Pharmaceuticals Inc. ... and development,collaboration including formulation, safety and early ... psychiatric disorders. R&D services,will be provided by ... in Moscow. The new agreement provides for ...
... Queen,s University Belfast is to become the United Kingdom,s ... ,cyber-attacks, after a funding boost from the Engineering and ... the EPSRC will help fund a new Innovation and ... (CSIT) - which will be based at Queen,s Institute ...
... Nov. 20 Par Pharmaceutical Companies, Inc. (NYSE: ... Court for the District of New Jersey last night ... (TRO) halting sales of Teva,s generic Pulmicort Respules(R) (budesonide ... against Teva, AstraZeneca agreed and that it too would ...
Cached Biology Technology:ChemDiv and Avineuro Extend Collaboration on Alzheimer's Disease and Schizophrenia 2Queen's 'secures' £25m for UK's cyber-safety 2Par Pharmaceutical Halts Shipment of Budesonide Inhalation Suspension 2
(Date:10/29/2014)... Genomics of the Kidney consortium ( CAGEKID ) ... exposure to aristolochic acid, an ingredient in some ... Communications , have important implications for public health. ... every year, and in Central Europe incidence rates ... International Cancer Genome Consortium (ICGC), has been studying ...
(Date:10/28/2014)... German . , ... food when times are lean? By studying wild chimpanzees ... of the Max Planck Institute for Evolutionary Anthropology in ... apes can acquire extra energy needed to maintain large, ... nests more en route to breakfast sites containing fruits ...
(Date:10/28/2014)... National University of Singapore (NUS) have discovered a new ... laying direct developing eggs in live bamboo with narrow ... bush frog ( Raorchestes chalazodes ). This critically ... known to adopt this novel reproductive strategy. The findings ... Biological Journal of the Linnean Society , in October ...
Breaking Biology News(10 mins):Kidney cancer in Central Europe 2The early chimp gets the fig 2The early chimp gets the fig 3NUS researchers discover for the first time that a rare bush frog breeds in bamboo 2NUS researchers discover for the first time that a rare bush frog breeds in bamboo 3
... rise and more than 120 countries now in favor ... create a new, specialized global environmental agency, says one ... address to government ministers meeting Tuesday in Kenya, Zakri ... Malaysia and former co-chair of the UN Millennium Ecosystem ...
... Forum 2012 (ESOF 2012) was officially launched today at the ... Dublin this year from 11th to 15th July. ESOF 2012, ... in the heart of the Irish capital, in the new ... meeting, held under the auspices of Euroscience, which aims to ...
... winner-take-all competition in nature is an essential pillar of ... have about how, or whether, to teach the subject. ... and religion are in deliberate opposition, like two lionesses ... practicing Catholic Kenneth Miller teaches evolution, he also teaches ...
Cached Biology News:Create effective new global environmental agency, ministers urged 2Create effective new global environmental agency, ministers urged 3Science Program announced for Euroscience Open Forum 2012 in Dublin 2Science Program announced for Euroscience Open Forum 2012 in Dublin 3Science Program announced for Euroscience Open Forum 2012 in Dublin 4Science Program announced for Euroscience Open Forum 2012 in Dublin 5Teaching science to the religious? Focus on how theories develop 2Teaching science to the religious? Focus on how theories develop 3