Navigation Links
Tiny test tube experiment shows reaction of melting materials at the nano scale
Date:10/15/2009

AUSTIN, TexasResearchers at The University of Texas at Austin have conducted a basic chemistry experiment in what is perhaps the world's smallest test tube, measuring a thousandth the diameter of a human hair.

The nano-scale test tube is so small that a high-power electron microscope was required to see the experiment.

Made from a thin shell of carbon, the test tube was stuffed with a thread-like crystal (a nanowire) of germanium with a tiny particle of gold at its tip.

The researchers heated the test tube and watched as the gold melted at the end of the nanowire, much like any solid crystal heated above its melting temperature in a glass test tube.

"The experiment is relatively simple," said chemical engineer Brian Korgel, whose laboratory conducted it. "Essentially, we observe well-known phenomena, like melting, capillarity and diffusion, but at a much, much smaller scale than has been possible to see before."

Such experiments provide new fundamental insights about how nanomaterials behave, and might be used to create new technologies, from better solar cells to unprecedentedly strong yet light-weight materials to higher performance optical displays and computing technologies.

Korgel and graduate students Vincent Holmberg and Matthew Panthani conducted the experiment, which was reported in the Oct. 16 edition of Science.

During the experiment, the nanowire melted as the temperature rose, but its shape was retained because the carbon test tube maintained its shape.

"In these very small structures, the phase behavior (like its melting temperature, etc.) can be different than bulk materials and can be size-dependent," Korgel said. "Therefore, if the structure changes when the phase change happens, then the result becomes very difficult to interpret and in fact, may not even represent the true behavior of the system."

The carbon test tube, however, provided a rigid container f
'/>"/>

Contact: Tim Green
timgreen@mail.utexas.edu
512-475-6596
University of Texas at Austin
Source:Eurekalert

Page: 1 2

Related biology technology :

1. NASA Sets Briefing on New Space Station Science Experiments
2. Quark Pharmaceuticals to Present at American Society for Pharmacology and Experimental Therapeutics Annual Meeting
3. BioSpace Partners with Journal of Visualized Experiments (JoVE) to Offer Peer-Reviewed Scientific Video Content on BioSpace.com
4. Connecticut BioBus Travels to State Capitol on April 24 for Tours and Experiments with Visiting Students
5. Alseres Pharmaceuticals Presents Inosine and Dopamine Transporter (DAT) Blocker Preclinical Data at the American Society for Experimental NeuroTherapeutics (ASENT) Conference
6. New Dual Cold Probe From Varian, Inc. Increases Sensitivity and Reduces Analysis Times for 13C NMR Experiments
7. Experiments reveal unexpected activity of fuel cell catalysts
8. Stem Cell Breakthrough Could End Human Embryonic Experimentation
9. Youngs experiment in a hydrogen molecule
10. New Survey Shows Devastating Impact of Rheumatoid Arthritis Pain on Intimate Relations
11. Topical erectile dysfunction therapy shows promise
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/27/2015)... 2015 SynGen Inc., a company that focuses ... harvest stem and progenitor cells from umbilical cord blood, ... that it has added three new members to its ... Business Units focus on product commercialization. ... Vice President and Chief Financial Officer.  Chuck was most ...
(Date:4/27/2015)... , Germany , April 27, ... in treatment of millions of cancer patients   ... patent in Europe entitled "Tissue ... discovery that EPHB4 is a novel receptor for Erythropoietin (EPO), where ... the production of red blood cells and is prescribed ...
(Date:4/27/2015)... 2015  MT Services LLC, a Lawsuit Settlement ... that U.S. District Judge Joseph Goodwin ... status meeting in hopes to resolve more than ... manufacturers who are involved in multidistrict litigations under ... going on for some time, and Judge Goodwin ...
(Date:4/27/2015)... (PRWEB) April 27, 2015 Diasome ... an agreement with Joslin Diabetes Center (“Joslin”) to ... study of Diasome’s novel Hepatocyte Directed Vesicle (“HDV”) ... 1 diabetes. , Located in Boston, Massachusetts, ... care and education organization dedicated to the prevention, ...
Breaking Biology Technology:SynGen Inc. Expands Its Management Team 2Molecular Health Gains Patent for Novel Receptor Utilizing Computational Biomarker Discovery Technology 2Transvaginal Mesh Lawsuit News: Another Joint Conference Status Meeting Ordered by Judge to Resolve More than 70K TVM Lawsuits against Several Mesh Manufacturers, Says Lawsuitsettlementnews.com 2Transvaginal Mesh Lawsuit News: Another Joint Conference Status Meeting Ordered by Judge to Resolve More than 70K TVM Lawsuits against Several Mesh Manufacturers, Says Lawsuitsettlementnews.com 3Diasome Pharmaceuticals Announces Clinical Trial Design Collaboration 2
... June 1 /PRNewswire-Asia-FirstCall/ -- Dehaier Medical Systems Ltd.,(Nasdaq: DHRM ... products in China , said today that it has become the ... Penlon, a UK firm specializing in anesthesia and breathing equipment for 60,years. ... ...
... CITY, Kan. , June 1 Oncimmune ... test that aids physicians in risk assessment and the ... results demonstrating the diagnostic and economic benefits of a ... significantly improve the prognosis for lung cancer patients. Currently, ...
... ... eLadder® Safety course series into its curriculum. The online drug safety training courses ... to enrolled PharmD and PhD students, postdoctoral fellows, and residents via the University of ... ...
Cached Biology Technology:Dehaier Medical Systems Extends Product Offerings with Exclusive Distribution Agreement for Penlon Anesthesia System in North China 2Dehaier Medical Systems Extends Product Offerings with Exclusive Distribution Agreement for Penlon Anesthesia System in North China 3Dehaier Medical Systems Extends Product Offerings with Exclusive Distribution Agreement for Penlon Anesthesia System in North China 4Studies Demonstrate Early Stage Detection and Economic Benefits of a Blood-Based Test for Lung Cancer 2Studies Demonstrate Early Stage Detection and Economic Benefits of a Blood-Based Test for Lung Cancer 3Studies Demonstrate Early Stage Detection and Economic Benefits of a Blood-Based Test for Lung Cancer 4Studies Demonstrate Early Stage Detection and Economic Benefits of a Blood-Based Test for Lung Cancer 5Studies Demonstrate Early Stage Detection and Economic Benefits of a Blood-Based Test for Lung Cancer 6Studies Demonstrate Early Stage Detection and Economic Benefits of a Blood-Based Test for Lung Cancer 7University of Maryland School of Pharmacy Adopts BioSoteria's eLearning Drug Safety Courses 2University of Maryland School of Pharmacy Adopts BioSoteria's eLearning Drug Safety Courses 3University of Maryland School of Pharmacy Adopts BioSoteria's eLearning Drug Safety Courses 4
(Date:4/8/2015)... , April 8, 2015  Infinisource, a ... and services, and Morpho, a leading supplier of ... to produce the market,s most advanced biometrically-enabled time ... iSolved NXG time clock is setting a bold, ... labor data for the small and mid-size employer. ...
(Date:4/2/2015)... 2, 2015 Fingerprint Cards (FPC) ... FPC1025 from the distributor World Peace Industrial Group (WPI), ... 2015 although the major part of the shipments will ... used by smartphone manufacturers in China ... in the communicated revenue guidance of + 1 000 MSEK ...
(Date:3/30/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/lc9bnl/global_gesture ... Gesture Recognition Market in Automotive Sector 2014-2018" report ... Global Gesture Recognition market in Automotive Sector to grow ... Gesture recognition is the ability of a ... an individual. Gesture recognition technology can be 2D-based or ...
Breaking Biology News(10 mins):iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 3Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2
... new University of Central Florida study will examine how rising ... Florida Panhandle and Alabama and Mississippi coasts. The research, ... Engineering, is a response to scientific studies that show sea ... research also could potentially be linked with models of how ...
... German . An international team of researchers, including ... San Francisco (USA) and Dr. Shannon McPherron of the Max ... evidence that human ancestors were using stone tools and consuming ... earlier than previously documented. While working in the Afar region ...
... mantle reservoir on Baffin Island in the Canadian Arctic. Geologist ... the finding--the first discovery of what may be a primitive ... The Earth,s mantle is a rocky, solid shell that is ... up about 84 percent of the Earth,s volume. The mantle ...
Cached Biology News:Study to examine rising sea level's impact on estuaries, coastal communities 2Scientists discover oldest evidence of human stone tool use and meat-eating 2Scientists discover oldest evidence of human stone tool use and meat-eating 3Scientists discover oldest evidence of human stone tool use and meat-eating 4Oldest Earth mantle reservoir discovered 2
Human Serum FDA Licensed US Donor Centers Sterile / Non-sterile: Sterile Filtered to 0.2 micron Information: Extensive Viral Testing ...
Normal human AB serum, pooled...
Human alpha-1-antitrypsin. No cross-reactivity with alpha-1-acid glycoprotein, serum albumin or other serum proteins....
Human/Mouse/Rat JNK Pan Specific Affinity Purified PAb...
Biology Products: