Navigation Links
NIST team proves bridge from conventional to molecular electronics possible
Date:3/18/2008

Researchers at the National Institute of Standards and Technology (NIST) have set the stage for building the evolutionary link between the microelectronics of today built from semiconductor compounds and future generations of devices made largely from complex organic molecules. In an upcoming paper in the Journal of the American Chemical Society,* a NIST team demonstrates that a single layer of organic molecules can be assembled on the same sort of substrate used in conventional microchips.

The ability to use a silicon crystal substrate that is compatible with the industry-standard CMOS (complementary metal oxide semiconductor) manufacturing technology paves the way for hybrid CMOS-molecular device circuitrythe necessary precursor to a beyond CMOS totally molecular technologyto be fabricated in the near future.

Scientists classify crystal structures by the particular plane or face cutting through the crystal that is exposed. Most research to date on silicon substrates for molecular electronic devices has been done with a crystal orientation that is convenient for organic molecules but incompatible with CMOS technologies. For their electronic device, the NIST team first demonstrated that a good quality monolayer of organic molecules could be assembled on the silicon orientation common to industrial CMOS fabrication, verifying this with extensive spectroscopic analysis.

They then went on to build a simple but working molecular electronic devicea resistorusing the same techniques. A single layer of simple chains of carbon atoms tethered on their ends with sulfur atoms were deposited in tiny 100-nanometer deep wells on the silicon substrate and capped with a layer of silver to form the top electrical contact. The use of silver is a departure from other molecular electronic studies where gold or aluminum has been used. Unlike the latter two elements, silver does not displace the monolayer or impede its ability to function.

The NIST team fabricated two molecular electronic devices, each with a different length of carbon chain populating the monolayer. Both devices successfully resisted electrical flow with the one possessing longer chains having the greater resistance as expected. A control device lacking the monolayer showed less resistance, proving that the other two units did function as nonlinear resistors.

The next step, the team reports, is to fabricate a CMOS-molecular hybrid circuit to show that molecular electronic components can work in harmony with current microelectronics technologies.


'/>"/>

Contact: Michael E. Newman
michael.newman@nist.gov
301-975-3025
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Related biology technology :

1. Brazilian National Biosafety Technical Committee Approves Monsanto Company Insect-Protected Corn Trait
2. FDA Approves RISPERDAL(R) to Treat Adolescents with Schizophrenia and Children and Adolescents with Bipolar Mania
3. FDA Approves ACAM2000(TM) Vaccine for Protection Against Smallpox
4. NJ Board of Pharmacy Approves Wedgewood Pharmacy Technician-Training Program
5. FDA Approves Expanded Labeling for Campath(R) to Include First-line Treatment for Leading Form of Adult Leukemia
6. FDA Approves New 300mg Loading Dose Tablet for PLAVIX(R) (clopidogrel bisulfate)
7. FDA Approves Administration of LEXIVA(R) with Lower Dose of Boosting Medication Ritonavir
8. FDA Approves DORIBAX(TM) for the Treatment of Complicated Intra-Abdominal and Complicated Urinary Tract Infections
9. FDA Approves IXEMPRA(TM) (ixabepilone), a Semi-Synthetic Analog of Epothilone B, for the Treatment of Advanced Breast Cancer
10. FDA Approves Genzymes Renvela(TM) for Dialysis Patients
11. FDA Approves New SPRYCEL(R) (Dasatinib) Product Labeling for Patients with Chronic-Phase CML
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
NIST team proves bridge from conventional to molecular electronics possible
(Date:5/2/2016)... , ... May 02, 2016 , ... ... its clients in mind, the fresh look and added functionality give the agricultural ... years have seen a dynamic shift in agriculture – from precision farming via ...
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... ... medical devices used in spinal surgical procedures, today announced the completion of a ... value proposition for current and future customers and partners. Kohlberg & Company, ...
(Date:4/29/2016)... -- Elekta is pleased to announce that ... treatment planning software, is available for clinical release. Real-world ... version 5.11 provides significant performance speed enhancements over prior ... four times faster than in previous versions of ... Monte Carlo algorithm, users can ...
(Date:4/28/2016)... York, NY (PRWEB) , ... April 28, 2016 ... ... QuickSTAT has made significant investments in recruiting top industry experts, and expanding its ... Platform, which provides industry-leading tools for clients to manage their clinical trial projects. ...
Breaking Biology Technology:
(Date:3/22/2016)... March 22, 2016 ... Sensors Market for Consumer Industry by Type (Image, ... Application (Communication & IT, Entertainment, Home Appliances, ... Forecast to 2022", published by MarketsandMarkets, the ... to reach USD 26.76 Billion by 2022, ...
(Date:3/21/2016)... , March 22, 2016 ... recognition with passcodes for superior security   ... a leading provider of secure digital communications services, today ... biometric technology and offer enterprise customers, particularly those in ... facial recognition and voice authentication within a mobile app, ...
(Date:3/17/2016)... 2016 ABI Research, the leader in ... biometrics market will reach more than $30 billion ... 2015. Consumer electronics, particularly smartphones, continue to boost ... to reach two billion shipments by 2021 at ... , Research Analyst at ABI Research. "Surveillance is ...
Breaking Biology News(10 mins):