Navigation Links
Caltech chemists develop simple technique to visualize atomic-scale structures
Date:9/2/2010

PASADENA, Calif.Researchers at the California Institute of Technology (Caltech) have devised a new techniqueusing a sheet of carbon just one atom thickto visualize the structure of molecules. The technique, which was used to obtain the first direct images of how water coats surfaces at room temperature, can also be used to image a potentially unlimited number of other molecules, including antibodies and other biomolecules.

A paper describing the method and the studies of water layers appears in the September 3 issue of the journal Science.

"Almost all surfaces have a coating of water on them," says James Heath, the Elizabeth W. Gilloon Professor and professor of chemistry at Caltech, "and that water dominates interfacial properties"properties that affect the wear and tear on that surface. While surface coatings of water are ubiquitous, they are also very tough to study, because the water molecules are "in constant flux, and don't sit still long enough to allow measurements," he says.

Quite by accident, Heath and his colleagues developed a technique to pin down the moving molecules, under room-temperature conditions. "It was a happy accidentone that we were smart enough to recognize the significance of," he says. "We were studying graphene on an atomically flat surface of mica and found some nanoscale island-shaped structures trapped between the graphene and the mica that we didn't expect to see."

Graphene, which is composed of a one-atom-thick layer of carbon atoms in a honeycomb-like lattice (like chicken wire, but on an atomic scale), should be completely flat when layered onto an atomically flat surface. Heath and his colleaguesformer Caltech graduate student Ke Xu, now at Harvard University, and graduate student Peigen Caothought the anomalies might be water, captured and trapped under the graphene; water molecules, after all, are everywhere.

To test the idea, the researchers conducted other exp
'/>"/>

Contact: Kathy Svitil
ksvitil@caltech.edu
626-395-8022
California Institute of Technology
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Fruit flies use horizontal landmarks for altitude control, says Caltech research team
2. Caltech: Gain and loss in optimistic versus pessimistic brains
3. Caltech biologists discover how T cells make a commitment
4. East-African human ancestors lived in hot environments, says Caltech-led team
5. Caltech-led team provides proof in humans of RNA interference using targeted nanoparticles
6. Caltech and UCSD scientists establish leech as model for study of reproductive behavior
7. Caltech receives more than $33 million from American Recovery and Reinvestment Act
8. Caltech researchers presenting at AAAS Meeting
9. Caltech researchers obtain first brain recordings from behaving fruit flies
10. Caltech neuroscientists discover brain area responsible for fear of losing money
11. Caltech scientists find emotion-like behaviors, regulated by dopamine, in fruit flies
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Caltech chemists develop simple technique to visualize atomic-scale structures
(Date:11/21/2014)... , November 18, 2014 According ... Market by Systems (Video, RFID, Access Control, Intrusion Detection, ... Hotels, Banks, Government), Component Service Geography - Global Forecasts ... Market is projected to be around $25 Billion in ... 2020, growing at a CAGR of 8.69%. ...
(Date:11/21/2014)... , Nov. 20, 2014 Strict laws against ... are piloting the North American and European automotive sector ... growing, gesture recognition systems that are intuitive and able ... in the industry. New analysis from ... Recognition Market in Europe and ...
(Date:11/21/2014)... 20, 2014   Atmel® Corporation (NASDAQ: ... and touch technology solutions, today launched the industry,s first ... the widest V cc range from 1.7V to ... faster I 2 C bus communication speeds, and are ... making them ideal for consumer, industrial, computer, and medical ...
Breaking Biology News(10 mins):Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4
... severed nerves could result in patients recovering in days or ... cellular mechanism similar to that used by many invertebrates to ... in the Journal of Neuroscience Research . "We ... minutes so that the behavior they control can be partially ...
... that make up half the biomass in the oceans ... over, mostly remain enigmatic. A few abundant groups have ... of the rest remain mysterious. Understanding how the ... is like trying to understand the solar system when ...
... fertile, excite our most basic urges, and as scientists have ... from women. But how? Now a team of scientists ... many genes influenced by the male and female sex hormones ... of male and female behaviors in mice. The UCSF ...
Cached Biology News:New procedure repairs severed nerves in minutes, restoring limb use in days or weeks 2Scientists coax shy microorganisms to stand out in a crowd 2Scientists coax shy microorganisms to stand out in a crowd 3Male and female behavior deconstructed 2Male and female behavior deconstructed 3Male and female behavior deconstructed 4
(Date:12/24/2014)... December 23, 2014 The ... such as its definition, classification, application and ... specification, manufacturing process, and product cost structure. ... applications. The analysis also covers upstream raw ... industry development trend and proposals. In the ...
(Date:12/24/2014)... 2014 Vermillion, Inc. (Nasdaq:   VRML), ... announced today that investors including Oracle Investment Management, ... and several Vermillion directors have agreed to purchase ... common stock and warrants to purchase unregistered shares ... Under the terms of the ...
(Date:12/22/2014)... Brussels (PRWEB) December 22, 2014 The ... the global leader of technical training across the life ... Clinical Data Management (SCDM) to provide the organization's ... certification programs —providing access to the more than 350 ... SCDM members with 10% off when registering for a ...
(Date:12/22/2014)... Dec. 22, 2014  ( www.competitivehealth.com ) — Competitive ... medical bill review and advocacy service, has signed an ... WellCard Savings discount health services marketplace. 63% ... more than they expected to pay. As part of ... costs, WellCard Savings is pleased to offer medical bill ...
Breaking Biology Technology:Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2
... chemists have developed a new way to make transistors ... integrated into high-performance computer chips to increase their speed ... chips when transistors are packed together tightly. , For ... Dai, the J. G. Jackson and C. J. Wood ...
... research institute to aid in successful mid-career changes, ... http://www.biocareercenter.com ) an online job board and careers tool ... who has developed Career Navigator -- a new product ... their fields with success --,to launch this new online ...
... May 28 The automation of,transaction-based processing ... in the United States. Foresight Corporation of ... and scale of installations of Transaction,Insight(R) - ... Transaction automation techniques enable healthcare organizations ...
Cached Biology Technology:Carbon nanoribbons could make smaller, speedier computer chips 2Online Career Service Turns Focus to 'Switching Gears' 2New Trend Sweeping Nation's Health Plans: Transaction Automation 2
... polyclonal antibody raised against a ... Immunogen: SLC22A3 (NP_068812, ... partial recombinant protein with GST ... Number: NM_021977 ...
... The Amplifluor UniPrimer-fluorescein is a hairpin ... transfer pair (fluorescein and non-fluorescent quencher) ... The UniPrimer is identical to ... Universal Detection System (S7901) and is ...
... Disposable. Virgin, optically clear polystyrene with ... alphanumeric coordinates for cell counting. 100% ... is a new product number, created ... If showing no availability yet, please ...
... The Rotofor purification system with PowerPac 3000 ... protein separation and purification by liquid-phase isoelectric ... mini (18 ml) and standard (60 ml) ... electrode chambers, PowerPac 3000 power supply, 10 ...
Biology Products: