Navigation Links
Germanium made laser compatible
Date:4/22/2013

Researchers from ETH Zurich, the Paul Scherrer Institute (PSI) and the Politec-nico di Milano have jointly developed a manufacturing technique to render the semiconductor germanium laser-compatible through high tensile strain. In their article recently published in "Nature Photonics", they reveal how they can gen-erate the necessary tensile strain efficiently. The scientists demonstrate how to use their method to effectively alter the optical properties of germanium, which is naturally unsuitable for lasing: "With a strain of three per cent, the material emits around twenty-five times more photons than in a relaxed state," explains Martin Sess, a doctoral student at the Laboratory for Nanometallurgy headed by Ralph Spolenak and the EMEZ at ETH Zurich. "That's enough to build lasers", adds his colleague Richard Geiger, a doctoral student at the Laboratory for Micro- and Nanotechnology at the PSI and the Institute for Quantum Electronics at ETH Zurich under Jrme Faist.

High tension through microbridges

With the new method, the researchers use the slight tension generated in ger-manium when it evaporates on silicon, to bring the germanium into a laser-compatible, strechted form. This prestrain is enhanced with so-called micro-bridges: the researchers centrally notch the sides of exposed germanium strips, which remain attached to the silicon layer at both ends. The two halves of the strip thus remain connected solely by an extremely narrow bridge, which is for physical reasons precisely where the strain in the germanium grows so intense that it becomes laser-compatible.

"The tensile strain applied to the germanium is comparable to the force exerted on a pencil as two lorries pull upon it in opposite directions," says Hans Sigg, the project manager at the PSI, explaining the feat on a micrometre scale in everyday proportions. Through the expansion of the material its properties change because the individual atoms slightly move ap
'/>"/>

Contact: Martin Sueess
mmartin.sueess@emez.ethz.ch
41-446-336-408
ETH Zurich
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Eye Surgery Center of Michigan First in Southeast Michigan to Perform Bladeless Cataract Surgery Using New LenSx® Laser Technology
2. New method for enhancing thermal conductivity could cool computer chips, lasers and other devices
3. Research could improve laser-manufacturing technique
4. Cooling semiconductor by laser light
5. New laser can point the way to new energy harvesting
6. Metamaterials may advance with new femtosecond laser technique
7. UCSB Physicists mix 2 lasers to create light at many frequencies
8. CU-Boulder physicists use ultrafast lasers to create first tabletop X-ray device
9. JPSA Introduces Picosecond Laser Micromachining System
10. Calmar Laser Growth Reinforced by ISO 9001:2008 Certification
11. Worlds smallest semiconductor laser created by University of Texas scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/23/2014)... the Vienna University of Technology and the Maria ... perfect semiconductor crystals into a silicon nanowire. With ... fast and multi-functional processing units can be accommodated ... research results will be published in the journal ... the cornerstone of future chip technology, but the ...
(Date:7/23/2014)... 23, 2014  AuraSense Therapeutics, the pioneer in developing ... regulatory and immunotherapeutic agents, announced today that ... Therapeutics, executive leadership team as chief financial ... to joining AuraSense Therapeutics, Mr. Snyder was ... of Cellular Dynamics International Inc., where he ...
(Date:7/23/2014)... (PRWEB) July 23, 2014 Last year, ... Systems , a leading global provider of data management ... with TrialMaster, a leading-edge system for electronic data capture ... of universal design and study execution tools added TrialMaster ... and much anticipated version of Transform for TrialMaster, is ...
(Date:7/23/2014)... 23 de julio de 2014 ADB ... Compañía) ha anunciado hoy una asociación con Austen ... (ABIA o el Instituto), para el propósito de ... de terapia de señal bioeléctrica (el E-QURE BST ... Instituto, que tiene una importante experiencia en cicatrización ...
Breaking Biology Technology:A crystal wedding in the nanocosmos 2AuraSense Therapeutics Appoints Biotechnology Veteran David S. Snyder as Chief Financial Officer 2Formedix and OmniComm Systems® Partnership Strengthened with the Release of Enhanced TrialMaster® Integration for EDC Build 2Formedix and OmniComm Systems® Partnership Strengthened with the Release of Enhanced TrialMaster® Integration for EDC Build 3ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 2ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 3ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 4ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 5ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 6
... CITY, Calif. , June 17 OncoMed Pharmaceuticals, Inc. ... global strategic alliance to discover, develop and commercialize novel anti-cancer stem ... a subset of tumor cells believed to play a significant role ... , , ...
... Institute have developed a new, ultra-simple method for ... of a meter thick. The process, which requires ... surface including silicon wafers, could have important implications ... assistant professor in the Department of Physics, Applied ...
... MD ... the functional relevance of a drug treatment on the heart following direct coronary flow ... ... MD Biosciences , a Preclinical Contract Research Organization (CRO), offers in vivo models for ...
Cached Biology Technology:OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 2OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 3OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 4OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 5Researchers develop ultra-simple method for creating nanoscale gold coatings 2MD Biosciences Offers Occlusion-induced Myocardial Infarct Model for Investigating the Cardio-protection of a Drug Treatment in the Event of Ischemia/reperfusion Injury 2
(Date:7/23/2014)... , , , , ... , , , , ... healthy lifespan. The idea, they argue, would be to target the... , , ... , , , , , ... , , , , , , , Medicine focuses almost entirely ...
(Date:7/23/2014)... Washington, DC -- The planet,s soil releases about 60 ... which is far more than that released by burning ... respiration. This enormous release of carbon is balanced by ... and other plant matter, as well as by the ... studies have documented that rising temperatures increase the rate ...
(Date:7/23/2014)... , July 23, 2014 BioCatch, ... detection, announced today it has been named in Gartner,s ... Market Guide replaces Gartner,s well-known Magic Quadrant for Web ... BioCatch as one of several vendors to deliver passive ... will become a standard feature of at least 30% ...
Breaking Biology News(10 mins):Strategy proposed for preventing diseases of aging 2Strategy proposed for preventing diseases of aging 3Strategy proposed for preventing diseases of aging 4Strategy proposed for preventing diseases of aging 5Climate change and the soil 2BioCatch Featured in Gartner's 2014 Online Fraud Detection Market Guide 2BioCatch Featured in Gartner's 2014 Online Fraud Detection Market Guide 3
... whole new interface between nanotechnology and neuroscience, scientists ... to detect, stimulate, and inhibit nerve signals along ... , Harvard chemist Charles M. Lieber and colleagues ... this week in the journal Science. , "We ...
... first time, researchers have developed a way to synthesize a ... it works. , Derived from a fungus discovered clinging to ... certain cancer cells into suicide while leaving healthy cells untouched. ... might have some tremendous potential as a prototype anticancer agent, ...
... Medical Research have discovered a mechanistic link between cellular ... proteins that lead to nerve cell injury and death ... , That link is Protein Disulphide Isomerase ... protein folding in times of cellular stress. Published ...
Cached Biology News:Nanowire arrays can detect signals along individual neurons 2New lab technique churns out fungus' potential cancer fighter 2Key stress protein linked to toxicities responsible for Parkinson's, Alzheimer's 2
... at the 3, 3', 4, and 4' ... an internal standard for the quantification of ... is the theoretical cyclooxygenase metabolite of dihomo-γ-linolenic ... in the plasma of normal humans or ...
Acrylamide, 500 g. Assay: > 99.9%, acrylic acid: < 0.001%. Conductivity (35%): < 2 umhos/cm.Risks: 45, 46, 48, 23, 24, 25 ; Safety Precautions: 53, 44. Category: Nucleotides & Enzymes & Biochemicals...
Direct ELISA Assay Diluent, 10 L...
Direct ELISA Assay Diluent - EDTA, 10 L...
Biology Products: