Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Chemical Wiring and Soldering toward All-Molecule Electronic Circuitry

03.06.2011
National Institute of Materials Science announced that a chemical wiring method has been developed for interconnection of each organic molecule by electrically conductive polymers.

National Institute of Materials Science (NIMS) announced on May 6, 2011 that a chemical wiring method is developed for interconnection of each organic molecule by electrically conductive polymers.

Details are published in Journal of the American Chemical Society, Article ASAP* by Researcher Yuji Okawa and his colleagues of NIMS International Center for Materials Nanoarchitectonics (MANA) with coauthors from organizations in Switzerland, Germany and United States.

Concerns of viable physical limitation of silicon based electronics have made single-molecule electronics to be a promising candidate for the future information systems. A challenge for its realization is connecting functional molecules to each other using conductive nanowires.

Researchers devised a method to create conductive nanowires at designated positions, and to ensure chemical bonding between the nanowires and functional molecules as follows. Functional molecules (phthalocyanine) are placed on a self-assembled monolayer of diacetylene compound. A probe tip of scanning tunneling microscope (STM) is positioned on the molecular row of the compound and stimulate the compound to form a conductive polydiacetylene nanowire by chain polymerization. Because of the high reactivity of the front edge of chain polymerization, the created polymer nanowire forms chemical bonding with an encountered molecular element, which will be named "chemical soldering".

First-principles theoretical calculations are used to investigate the structures and electronic properties of the connection. STM images demonstrated two conductive polymer nanowires connected to a single phthalocyanine molecule. A resonant tunneling diode is formed by this method as an example of single-molecule electronic devices.

Journal information

*Yuji Okawa, Swapan K. Mandal, Chunping Hu, Yoshitaka Tateyama, Stefan Goedecker, Shigeru Tsukamoto, Tsuyoshi Hasegawa, James K. Gimzewski, and Masakazu Aono, "Chemical Wiring and Soldering toward All-Molecule Electronic Circuitry", Journal of the American Chemical Society, Articles ASAP. Publication Date (Web): May 6, 2011 (Article) DOI: 10.1021/ja111673x

Mikiko Tanifuji | Research asia research news
Further information:
http://www.nims.go.jp/eng/
http://www.researchsea.com

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Molecules Brilliantly Illuminated

Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.

Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Structured light and nanomaterials open new ways to tailor light at the nanoscale

23.04.2018 | Physics and Astronomy

On the shape of the 'petal' for the dissipation curve

23.04.2018 | Physics and Astronomy

Clean and Efficient – Fraunhofer ISE Presents Hydrogen Technologies at the HANNOVER MESSE 2018

23.04.2018 | Trade Fair News

VideoLinks
Science & Research
Overview of more VideoLinks >>>