Navigation Links
Manipulating molecules for a new breed of electronics
Date:2/20/2011

called pi orbitals of the electrons making up the molecules, and their interaction with electron orbitals in the attached electrodes. As Tao notes, pi orbitals may be thought of as electron clouds, protruding perpendicularly from either side of the plane of the molecule. When the tilt angle of a molecule trapped between two electrodes is altered, these pi orbitals can come in contact and blend with electron orbitals contained in the gold electrodea process known as lateral coupling. This lateral coupling of orbitals has the effect of increasing conductance.

In the case of the pentaphenylene molecule, the lateral coupling effect was pronounced, with conductance levels increasing up to 10 times as the lateral coupling of orbitals came into greater play. In contrast, the tetraphenyl molecule used as a control for the experiments did not exhibit lateral coupling and conductance values remained constant, regardless of the tilt angle applied to the molecule. Tao says that molecules can now be designed to either exploit or minimize lateral coupling effects of orbitals, thereby permitting the fine-tuning of conductance properties, based on an application's specific requirements.

A further self-check on the conductance results was carried out using a modulation method. Here, the molecule's position was jiggled in 3 spatial directions and the conductance values observed. Only when these rapid perturbations specifically changed the tilt angle of the molecule relative to the electrode were conductance values altered, indicating that lateral coupling of electron orbitals was indeed responsible for the effect. Tao also suggests that this modulation technique may be broadly applied as a new method for evaluating conductance changes in molecular-scale systems.


'/>"/>

Contact: Joseph Caspermeyer
Joseph.Caspermeyer@asu.edu
Arizona State University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Model developed for manipulating vitamin D levels in calves
2. Gene exchange common among sex-manipulating bacteria
3. The medium is the message: Manipulating salmonella in spaceflight curtails infectiousness
4. Residual dipolar couplings unveil structure of small molecules
5. Missing molecules hold promise of therapy for pancreatic cancer
6. Unraveling Alzheimers: Simple small molecules could untangle complex disease
7. Iowa State, Ames Lab researcher develops new way to study single biological molecules
8. Tiny RNA molecules control labor, may be key to blocking premature birth
9. Tiny molecules protect from the dangers of sex
10. Of 50,000 small molecules tested to fight cancer, 2 show promise
11. Study identifies key molecules in multiple myeloma
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Manipulating molecules for a new breed of electronics
(Date:5/19/2015)... , May 19, 2015 ... has announced the addition of the  "Genetic ... offering.  ,     (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , ,A recent ... an in-depth analysis of the current and ... of gene-based tests, their working principles and ...
(Date:5/14/2015)... , May 14, 2015  Verificient Technologies, ... verification and online remote proctoring, announced a ... (SaaS) company and creator of the Canvas ... the two companies will benefit from the ... As a fully integrated multifactor ...
(Date:5/11/2015)... May 11, 2015 Curemark LLC, a privately ... of a new Phase III double blind, randomized, placebo-controlled ... formulation, CM-AT, on all children ages 3-8 with Autism. ... Phase III double blinded clinical trial for CM-AT in ... of the digestive enzyme chymotrypsin. This new trial will ...
Breaking Biology News(10 mins):Global Genetic Testing Market Outlook 2018 2Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2Curemark, LLC, Launches New Phase III Trial in Expanded Population of Children with Autism 2
... a world-leading provider of scientific, technical and medical information products ... by the European Menopause and Andropause Society (EMAS) in journal ... postmenopausal women with summary recommendations. Vitamin D deficiency is ... is classified as a public health issue as it can ...
... billion-dollar-a-year industry in the United States that aims to create ... But a new analysis of restoration projects shows that restored ... "Once you degrade a wetland, it doesn,t recover its normal ... carbon, which both affect natural cycles of water and nutrients, ...
... hydrothermal sea vents go dormant and their blistering warmth turns to ... replaced. A team led by USC microbiologist Katrina Edwards found ... spewed by active hydrothermal vents are supplanted, once the vents go ... that make up the vents themselves. These findings based ...
Cached Biology News:Elsevier's Maturitas publishes position statement on the role of vitamin D in postmenopausal women 2Restored wetlands rarely equal condition of original wetlands 2Restored wetlands rarely equal condition of original wetlands 3Life discovered on dead hydrothermal vents 2
(Date:5/21/2015)... , May 21, 2015  The EveryLife ... Hatch (R-UT) and Amy Klobuchar ... Now Accelerating Cures & Treatments, or OPEN ACT. ... disease patient advocacy organizations, this bipartisan legislation promises ... affordable medicines to rare disease patients by incentivizing ...
(Date:5/21/2015)... 2015 As part of its philanthropic ... Sun Health Foundation funded a $3.25 million project to ... with the most up-to-date features and technology. , The ... pharmacy's 45 staff members will begin moving from the ... the coming days. , The current pharmacy has ...
(Date:5/20/2015)... Calif. , May 20, 2015 ... today presented preliminary data demonstrating the ability of ... pulmonary fibrosis (IPF) from other interstitial lung diseases ... suggest the classifier,s potential to help thousands of ... resolve ambiguity in IPF diagnosis – a frequent ...
(Date:5/20/2015)... 2015 The global genotyping market is ... the forecast period of 2015 to 2020 to reach ... in drug discovery and development process and to provide ... addition to this,heavy investments by key manufacturers to offer ... propelling market growth. Browse 113 market data tables & ...
Breaking Biology Technology:Advocates Cheer Senate Leaders for Introducing Bipartisan Bill to Increase Number of Rare Disease Treatments 2Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 2Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 3Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 2Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 3Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 4Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 5Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 2Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 3Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 4Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 5
... chemists have developed a new model to predict the ... finding could help inform the design of tailored nano-structures, ... fields, including the remote sensing of atmospheric pollutants and ... nano-particles play a key role in atmospheric processes as ...
... Biotechnology, Inc. (OTC: CSBR) ("Champions") announced today the ... Inc. in which Champions will conduct low passage ... an inhibitor of mutant B-Raf, and CEP-37440, a ... determine the activity or response in potential clinical ...
... Health Diagnostic Laboratory, Inc. (HDL, Inc.) and BG Medicine, Inc. ... which HDL, Inc. will offer galectin-3 testing services based on ... Medicine Galectin-3 Test was recently cleared by the FDA as ... heart failure. Elevated galectin-3 levels are associated with an inherently ...
Cached Biology Technology:UBC researchers develop new model to predict the optical properties of nano-structures 2Champions Announces Technology Collaboration Utilizing Champions' Tumorgraft™ Technology Platform for Oncology Drug Development 2Champions Announces Technology Collaboration Utilizing Champions' Tumorgraft™ Technology Platform for Oncology Drug Development 3Health Diagnostic Laboratory, Inc. (HDL, Inc.) Announces Availability of Galectin-3 Testing Service in Partnership With BG Medicine 2Health Diagnostic Laboratory, Inc. (HDL, Inc.) Announces Availability of Galectin-3 Testing Service in Partnership With BG Medicine 3Health Diagnostic Laboratory, Inc. (HDL, Inc.) Announces Availability of Galectin-3 Testing Service in Partnership With BG Medicine 4
... media are rigid macroporous hydrophilic media. The ... at moderate pressures, while the macroporous beads ... hydrophilic matrix reduces nonspecific binding. Macro-Prep High ... exchanger with very high flow rates and ...
... collection of phage display libraries, human ... and mouse tissues. All cDNA libraries ... size of cDNA inserts has been ... 1000bp by gel electrophoresis of DNA ...
... Corticosterone kit is a competitive enzymeimmunoassay (EIA) ... mouse or rat serum or plasma. Corticosterone ... in rats and mice, and in most ... reptiles. Most mammals produce both corticosterone and ...
Mouse monoclonal [1.F.1] to Yersinia pestis F1 antigen ( Abpromise for all tested applications). Antigen: Purified F1 antigen of Y. pestis vaccine strain EB....
Biology Products: