Tohoku University. Research Profiles

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2013.06.18 Tohoku University Develops World's First Nonvolatile Memory Applicable to L3 Cache

A group led by Professor Hideo Ohno, of the Center for Spintronics Integrated Systems and of the Research Institute of Electrical Communication, Tohoku University, Sendai, Japan, and by Professor Tetsuo Endoh, of the Center for Spintronics Integrated Systems and of the Graduate School of Engineering, Tohoku University, has developed the world’s first embedded memory that can transfer data as fast as today’s state-of-the-art static random access memory (SRAM)1 and that can retain data even without power. They did this by combining the magnetic tunnel junction (MTJ) technology extensively researched and developed at Tohoku University with state-of-the-art silicon technologies in an academic-industrial alliance with NEC Corporation, Tokyo, Japan. The operating principle of the memory was verified by measuring the performance of a 1-Mb nonvolatile embedded memory macro fabricated in the Tsukuba Innovation Arena (TIA)2, Tsukuba, Japan, and based on the MTJ fabrication technology developed at Tohoku University. This achievement is a major step toward lowering the power consumption of today’s computing systems, which is important given that the performance gains being made by miniaturization of the constituent LSI chips come at the cost of an increase in power consumption. More information https://www.tohoku.ac.jp/english/newimg/pressimg/tohokuuniv-press_20130610_02e.pdf [Contact] Tohoku University Center for Spintronics Integrated Systems Yutaka Kadowaki +81-22-217-6116 yut-kado*riec.tohoku.ac.jp (Replace * with @) ----------------------------------------------------------- "Research and Development of Ultra-low Power Spintoronics- based VLSIs", supported by JSPS's FIRST http://www.rpip.tohoku.ac.jp/seeds/profile/93/lang:en/ Novel-Concept Silicon Integrated Circuits Derived from the 3-Dimensional Device, Circuit and Architecture http://www.rpip.tohoku.ac.jp/seeds/profile/94/lang:en/

2013.04.17 Enzymatic production of sesaminol, a sesame lignan showing a variety of health benefits

A research group led by Dr. Toru Nakayama, Professor of Graduate School of Engineering, in collaboration with Kiyomoto Co. and Prof. Yamaguchi, Minami-Kyushu University, both Miyazaki, Japan, discovered a novel enzyme that may provide a breakthrough for the industrial production of sesaminol. More information https://www.tohoku.ac.jp/english/newimg/pressimg/tohokuuniv-press_20130411_01e.pdf [Contact] Professor Toru Nakayama Graduate School of Engineering, Tohoku University TEL, FAX: +81-22-795-7270 E-mail: nakayama*seika.che.tohoku.ac.jp (Replace * with @)

2013.02.22 Successfully Relaying Messages over a 2.5 km Distance Using only Smartphones' Wifi Functionality: A First Step Towards Practical Use

The research group led by Professor Nei Kato and Associate Professor Hiroki Nishiyama from the Graduate School of Information Sciences and the Research Organization of Electrical Communication, at Tohoku University, successfully relayed messages utilizing only the WiFi functionality of smartphones on February 18, 2013 over a distance of approximately 2.5 km from Nishi park (Aoba-ku, Sendai) to JR Sendai station. ________________________________ ''Related Researcher's Profile'' Message Transmission without Cellular Coverage, "Smartphone de Relay" http://www.rpip.tohoku.ac.jp/seeds/profile/97/lang:en/

2013.02.18 Message Transmission without Cellular Coverage: En Route to Effective Communications in Disaster Areas

Professor Nei Kato and Associate Professor Hiroki Nishiyama's research group at the Graduate School of Information Sciences, Tohoku University, conducted an experiment using 27 smartphones at the Tohoku University, Aobayama Campus (Aoba-ku, Sendai) on February 8, 2013 and successfully relayed messages using only the wireless connection (WiFi) capability without using the cellphone carrier network. The success of the experiment shows that it is possible to relay messages via smartphones having WiFi capability even in the areas without cellular service. This is the first technique, in which the smartphones utilize information such as remaining battery, accelerometer, and surrounding smartphones information to decide the appropriate transmission mode. With this technique, it is one step closer to being able to establish a network that the disaster victims or public event participants can easily access anywhere, anytime, and connect to anyone. The experiment was carried out successfully due to the continuous research efforts contributed by Tohoku University. In addition, this experiment is a part of the project "Research and development of technologies for realizing disaster-resilient networks" consisting of designing and evaluating the prototype network, which is composed of the interconnections between user devices. The project is represented by Professor Fumiyuki Adachi from Graduated School of Engineering, Tohoku University, and supported by Ministry of Internal Affairs and Communications. ________________________________ ''Related Researcher's Profile'' Message Transmission without Cellular Coverage, "Smartphone de Relay" http://www.rpip.tohoku.ac.jp/seeds/profile/97/lang:en/

2013.01.28 Development of New Atomisation Process using High-Velocity Air Fuel Flame

Tohoku University and Hard Industry (President Takuichi Yamagata, Hachinohe City, Aomori Pref.) developed a new atomisation process using a high-velocity air fuel flame; collaborative research with Iwate University also investigated adequate stabilization of the flame by optimisation of the combustion conditions. We successfully realized the new atomisation process. ↓More information↓ http://www.tohoku.ac.jp/english/newimg/pressimg/tohhokuunic-press20130125eng_01.pdf [Contact] Administration Division Institute for Materials Research, Tohoku University Address: 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan. TEL: +81-22-215-2181, FAX: +81-22-215-2184 E-mail: imr-som*imr.tohoku.ac.jp (Replace * with @)

2013.01.22 This site has been renewed: now it is easier-to-see and easier-to-use.

**Please explore and use this site for your R&D needs.** -The Top Page displays various Research Profiles visually like a gallery catalog. -You can get to an inquiry form by just clicking “INQUIRY” button on an individual profile page. It is now easier than ever to request additional information. -The right side menu shows the other information related to a Profile including "Browsing History", "Same Researcher", "Common Keywords", "Topics", "Patent Information" and "User Who Reviewed This Content Also Reviewed".

2013.01.15 One step forward in the reassembly of cells: Success in preparation of additive-free cell extract in same intracellular concentration as the original cell

Once the cell, the base unit of living organisms, is broken down, it cannot be reconstituted back to its original living state. What are the reasons for not being able to return to the living state? Are there conditions applicable for a return? Research has been conducted to answer these questions in which Researcher Kei Fujiwara and Associate Professor Shin-ichiro M. Nomura, Graduate School of Engineering, Tohoku University, has been successful in in vitro processing of cell extract with nearly equivalent concentration with the original disassembled cells. The cell extract was prepared this time without any additives, using evaporation to densify to a close level as the intracellular environment. Cell extract obtained using this method had the same ability as the original cell to produce protein from DNA. We found that the ability to produce protein increases but once the concentration reaches a level close to the intracellular concentrations, the reverse process occurs. The research results clearly show the in vitro environment is clearly different from the microscopic intracellular environment, not only from the standpoint of artificial additives and concentration levels. Establishing the reasons for the results will pave the way for creating the basic conditions necessary for the cell extracts to actually return to the cell state. The research results were published on Jan 10, 2013 in the scientific journal PLOS ONE. The paper's title is "Condensation of an Additive-Free Cell Extract to Mimic the Conditions of Live Cells." (Freely downloadable in : http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0054155 ) [Contact] Researcher Kei Fujiwara Graduate School of Engineering, Tohoku University Address: 6-6-1 Aoba Aramaki Aoba-ku Sendai, Miyagi, 980-8579, Japan TEL/FAX: +81-22-795-6910 E-mail: fujiwara*molbot.mech.tohoku.ac.jp (Replace * with @) Associate Professor Shinichiro M. Nomura Graduate School of Engineering, Tohoku University E-mail: nomura*molbot.mech.tohoku.ac.jp (Replace * with @)

2013.01.10 Development of production techniques for graphene using supercritical fluids

A research group headed by Professor Itaru Honma and Assistant Professor Takaaki Tomai, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University has developed a process using supercritical fluids for the mass production of graphene, an innovative carbon material. Since the production of high quality graphene is now possible with the use of fast and low cost processes, further practical applications are expected such as lightweight high-strength structural elements, battery materials, electronics, electricity generation, power generation, and other various energy technologies beyond current uses in materials for electric components. ↓More information (Japanese)↓ http://www.tohoku.ac.jp/japanese/newimg/pressimg/tohokuuniv-press20130110_01.pdf [Contact] Professor Itaru Honma Institute of Multidisciplinary Research for Advanced Materials, Tohoku University TEL: +81-22-217-5815 E-mail: i.honma*tagen.tohoku.ac.jp (Replace * with @) Assistant Professor Takaaki Tomai Institute of Multidisciplinary Research for Advanced Materials, Tohoku University TEL: +81-22-217-5816 E-mail: tomai*tagen.tohoku.ac.jp (Replace * with @)

2013.01.09 A minimal carbonaceous bearing: A fullerene molecule rolls in a finite nanotube molecule

A research group led by Professor Hiroyuki Isobe of Graduate School of Science, Tohoku University has created the world’s smallest carbon nanotube bearing by assembling a fullerene molecule and a finite carbon nanotube molecule. Notably, they produced this molecular bearing in the molar quantity of 1023 molecules, marking a departure of nanotube bearings from single-molecule science to mass-production technology. The anisotropic rolling motion of the central journal with a shaft in the bearing was demonstrated spectroscopically: A motion of a nanometer sized top in the nanotube was confirmed. The spectroscopic analysis also demonstrated that the anisotropic rolling motion is taking place in enormous number of molecules and that the rolling speed was controlled by temperature. The result of this research suggests that, with powerful organic synthesis methods, many dreams of nanotechnology may come true, notably, in quantity. More information (Japanese) http://www.tohoku.ac.jp/japanese/newimg/pressimg/tohokuuniv-press20130108_01web.pdf [Contact] Professor Hiroyuki Isobe Department of Chemistry Graduate School of Science, Tohoku University TEL: +81-22-6585 Fax: +81-22-795-6589 E-mail: isobe*m.tohoku.ac.jp (Replace * with @) Assistant Professor Shunpei Hitosugi Department of Chemistry Graduate School of Science, Tohoku University TEL: +81-22-6588 Fax: +81-22-795-6586 E-mail: hitosugi*m.tohoku.ac.jp (Replace * with @) Website of their labolatory: http://www.orgchem2.chem.tohoku.ac.jp/