Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > High-performance thin film boost for electronics research

Figure: Tailor-made dielectric nanosheet via controlled nanoscale doping. (a) Structural change induced by Nb doping. (b) AFM image of titanium-niobate nanosheet.
Figure: Tailor-made dielectric nanosheet via controlled nanoscale doping. (a) Structural change induced by Nb doping. (b) AFM image of titanium-niobate nanosheet.

Abstract:
MANA researchers have developed the world's highest performance thin-film capacitors using a new high-permittivity (high-k) dielectric sheet with molecular-level thickness (~1 nm). This technology may revolutionize the next-generation electronics.

High-performance thin film boost for electronics research

Japan | Posted on January 4th, 2012

[Tsukuba, 4 January 2012] The announcement of this breakthrough comes from a research group led by MANA Scientist Dr. Minoru Osada and Principal Investigator Dr. Takayoshi Sasaki of the International Center for Materials Nanoarchitectonics (MANA) at the National Institute for Material Science (NIMS) in Japan.

Good insulating, high-k nanofilms are expected to be key to future applications as predicted by the International Technology Roadmap for Semiconductors (ITRS).

Minoru Osada and colleagues created thin films based on titanium-niobate nanosheets (TiNbO5, Ti2NbO7, Ti5NbO14) as building blocks. The research group delaminated layered oxides and stacked sheets on an atomically flat SrRuO3 substrate, creating films between 5 and 15 nm thick. The thin-film capacitors developed by this method have excellent dielectric characteristics, achieving the world's highest performance permittivity (160 ~ 300) with a film thickness of 5 ~ 15 nm.

The researchers relate the dielectric performance of the nanofilms to the structural features. In these nanosheets, the octahedral distortion inherent to site engineering by Nb doping results in a giant molecular polarizability. New cooperative functions that originate from the mutual interactions between nanoscale structural units comprise the focus of nanoarchitectonics, the discipline at the center of MANA research.

This latest research demonstrates simultaneous improvements in a number of material properties, including relative permittivity, lower loss and leakage current. The authors add, "The solution-based room-temperature process using oxide nanosheets as building blocks opens multiple possibilities for the development of high-k dielectrics in capacitor technology, gate insulators in organic field effect transistors, energy-storage devices, and also future flexible electronics."

Further information about publications and affiliation

Minoru Osada1*, Genki Takanashi1, Bao-Wen Li1, Kosho Akatsuka1, Yasuo Ebina1, Kanta Ono2, Hiroshi Funakubo3, Kazunori Takada1 and Takayoshi Sasaki1, "Controlled Polarizability of One-Nanometer-Thick Oxide Nanosheets for Tailored, High-k Nanodielectrics", Advanced Functional Materials, 21, 3482-3487, (2011).

1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan

2. Institute of Materials Structure Science, high Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan

3. Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Yokohama 226-8502, Japan

* corresponding author, e-mail address:

####

About International Center for Materials Nanoarchitectonics (MANA)
What is MANA?

A message from Dr Masakazu Aono, Director-General, MANA

The International Center for Materials Nanoarchitectonics (MANA) was established as one of the five research centers selected as part of the World Premier International (WPI) Research Center Initiative, launched by Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT) in 2007 (*). I am pleased to report that in the three years since its inception, MANA has achieved steady progress and I would like to take this opportunity to express my sincere gratitude to all parties who have supported and contributed to its success.

The creation of a sustainable society remains one of the most important challenges mankind faces in the modern age. The realization of such a society will require technological innovation in a wide range of fields including the environmental, energy, resources, IT and communications, diagnostic and medical sectors. More importantly, however, advances in each of these disciplines will depend to a large extent on the development of new materials. Historically, advances in materials sciences have always paved the way for technological innovation with the resulting technologies functioning as the driving force that breaks through existing barriers.

Following remarkable development over the last two decades, the field of nanotechnology has come to play a central role in modern day materials development and it is widely expected to remain a key pillar of materials sciences in the future. However, if we view nanotechnology as just another significant milestone in approaches toward materials development, we lose a valuable opportunity to leverage its true potential. Nanotechnology should really be considered an entirely new branch of technology that has brought about a paradigm shift in conventional materials development. At MANA, this new discipline is referred to as “Nanoarchitectonics” and we are striving to promote and explore this field.

Perhaps the most remarkable insight thus far gained through nanotechnology is that “interesting new functions seem to appear once material is reduced to nanoscale dimensions.” However, the mere incorporation of these single properties into materials development will not bring about substantial innovation in the science. Of more importance are the various new cooperative functions that originate as the result of the mutual interactions nanoscale structural units exert with each other. Properly understanding the cooperative functions and systematically using them could likely spark a transformation in materials development. We must advise caution though, as the conventional manufacturing approach of making and assembling parts in accordance with a particular design (valid for macro-scales to micron scales) cannot necessarily be transferred to nanoscale operations. Specific manipulation of nanoscale structural units, comprised of atoms and molecules, is not simply a matter of using the appropriate tools or techniques but is dependent on a range of other factors such as statistical and thermal fluctuations and thus not always absolutely achievable. Incorporating these structural ambiguities and deficiencies into design decisions, Nanoarchitectonics constitutes a new branch of technology that will prompt the development of new materials by exploring new essential tools and techniques to create materials with revolutionary properties based on the organization of cooperative functions.

To promote and effectively use Nanoarchitectonics as an independent discipline, MANA has established four research areas consisting of Nano-Materials, Nano-Systems, Nano-Green, and Nano-Bio, with the scope of research extending from fundamental to applied levels. The Center has also succeeded in creating an international environment with over half of its research body comprised of foreigners and is actively trying to attract competent human resources from all over the world. MANA is also dedicated to the training of young scholars in an effort to contribute to the next generation of researchers.

In closing, I would like to once again request your continued support for our activities.

(*) A sixth research center was added in Kyushu University in 2010.

For more information, please click here

Contacts:
International Center for Materials Nanoarchitectonics (MANA)
Administration Office
1-1 Namiki, Tsukuba-shi Ibaraki, 305-0044 JAPAN

Telephone: +81-29-860-4709

Copyright © International Center for Materials Nanoarchitectonics (MANA)

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Northwestern researchers achieve unprecedented control of polymer grids: Materials could find applications in water purification, solar energy storage, body armor June 22nd, 2018

Nanobiotix Publishes Positive Phase 2/3 Data For Nanomedicine in Soft Tissue Cancer (Webcast June 22) June 22nd, 2018

Alzheimer's breakthrough: Brain metals that may drive disease progression revealed: In brains affected by Alzheimer's, researchers identify chemically reduced iron species, with mineral forms including a magnetic iron oxide June 22nd, 2018

Collaboration yields discovery of 12-sided silica cages June 20th, 2018

Thin films

New optical sensor can determine if molecules are left or right 'handed' June 13th, 2018

Organic solar cells reach record efficiency, benchmark for commercialization April 23rd, 2018

High efficiency solar power conversion allowed by a novel composite material: A composite thin film developed at INRS improves significantly solar cells' power conversion efficiency April 10th, 2018

Researchers develop nanoparticle films for high-density data storage: April 3rd, 2018

Discoveries

Alzheimer's breakthrough: Brain metals that may drive disease progression revealed: In brains affected by Alzheimer's, researchers identify chemically reduced iron species, with mineral forms including a magnetic iron oxide June 22nd, 2018

Collaboration yields discovery of 12-sided silica cages June 20th, 2018

Carbon nanotube optics poised to provide pathway to optical-based quantum cryptography and quantum computing: Researchers are exploring enhanced potential of carbon nanotubes for unique applications June 18th, 2018

Camouflaged nanoparticles used to deliver killer protein to cancer June 17th, 2018

Announcements

Northwestern researchers achieve unprecedented control of polymer grids: Materials could find applications in water purification, solar energy storage, body armor June 22nd, 2018

Nanobiotix Publishes Positive Phase 2/3 Data For Nanomedicine in Soft Tissue Cancer (Webcast June 22) June 22nd, 2018

Alzheimer's breakthrough: Brain metals that may drive disease progression revealed: In brains affected by Alzheimer's, researchers identify chemically reduced iron species, with mineral forms including a magnetic iron oxide June 22nd, 2018

Collaboration yields discovery of 12-sided silica cages June 20th, 2018

Energy

Northwestern researchers achieve unprecedented control of polymer grids: Materials could find applications in water purification, solar energy storage, body armor June 22nd, 2018

Physicists devise method to reveal how light affects materials: The new method adds to the understanding of the fundamental laws governing the interaction of electrons and light June 15th, 2018

Tripling the Energy Storage of Lithium-Ion Batteries: Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries June 14th, 2018

Remote control of transport through nanopores: New study outlines key factors affecting the transfer of molecules through biological channels May 24th, 2018

Solar/Photovoltaic

Northwestern researchers achieve unprecedented control of polymer grids: Materials could find applications in water purification, solar energy storage, body armor June 22nd, 2018

Team achieves two-electron chemical reactions using light energy, gold May 15th, 2018

Hematene joins parade of new 2D materials: Rice University-led team extracts 3-atom-thick sheets from common iron oxide May 8th, 2018

Harvesting clean hydrogen fuel through artificial photosynthesis May 3rd, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project