Japan Advanced Institute of Science and Technology

www.jaist.ac.jp/index-e.html
Ishikawa, Japan
SEARCH FILTERS
Time filter
Source Type

Patent
Japan Advanced Institute of Science, Technology and Adamant Co. | Date: 2017-05-31

There are provided an oxide dielectric having excellent properties and a solid state electronic device (e.g., a capacitor, a semiconductor device, or a small electromechanical system) having such an oxide dielectric. An oxide layer 30 includes an oxide dielectric (possibly including inevitable impurities) including bismuth (Bi) and niobium (Nb) and having a first crystal phase of a pyrochlore-type crystal structure and a second crystal phase of a -BiNbO_(4)-type crystal structure. The oxide layer 30 has a controlled content of the first crystal phase and a controlled content of the second crystal phase, in which the first crystal phase has a dielectric constant that decreases with increasing temperature of the oxide layer 30 in a temperature range of 25C or more and 120C or less, and the second crystal phase has a dielectric constant that increases with increasing temperature of the oxide layer 30 in the temperature range.


There are provided an oxide dielectric having excellent properties and a solid state electronic device (e.g., a capacitor, a semiconductor device, or a small electromechanical system) having such an oxide dielectric. An oxide layer 30 includes an oxide dielectric (possibly including inevitable impurities) including bismuth (Bi) and niobium (Nb) and having a first crystal phase of a pyrochlore-type crystal structure and a second crystal phase of a -BiNbO_(4)-type crystal structure. The oxide layer 30 has a controlled content of the first crystal phase and a controlled content of the second crystal phase, in which the first crystal phase has a dielectric constant that decreases with increasing temperature of the oxide layer 30 in a temperature range of 25 C. or more and 120 C. or less, and the second crystal phase has a dielectric constant that increases with increasing temperature of the oxide layer 30 in the temperature range.


Patent
Japan Advanced Institute of Science, Technology and Sumitomo Seika Chemicals Co. | Date: 2016-12-13

The invention provides an oxide semiconductor layer that has less cracks and is excellent in electrical property and stability, as well as a semiconductor element and an electronic device each including the oxide semiconductor layer. The invention provides an exemplary method of producing an oxide semiconductor layer, and the method includes the precursor layer forming step of forming, on or above a substrate, a layered oxide semiconductor precursor including a compound of metal to be oxidized into an oxide semiconductor dispersed in a solution including a binder made of aliphatic polycarbonate, and the annealing step of heating the precursor layer at a first temperature achieving decomposition of 90 wt % or more of the binder, and then annealing the precursor layer at a temperature equal to or higher than a second temperature (denoted by X) that is higher than the first temperature, achieves bonding between the metal and oxygen, and has an exothermic peak value in differential thermal analysis (DTA).


Grant
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ICT-2013.1.1 | Award Amount: 4.42M | Year: 2013

Current communication standards and systems are not optimally prepared for their application in unpredictable environments which occur for example in serious disaster scenarios such as earthquakes or tsunamis. Cellular communications systems are planned using accurate/strict link budget allocation mechanisms, in order to keep the probability of outage in an acceptable range. The whole communication chain (coding, signalling chain, but as well as higher layer protocols) is optimized for the operation in this range. Therefore, communication services perform poorly or fail completely in unpredictable environments. Future networks will most likely be heterogeneous and dense, a structure which can be exploited if communication schemes are constructed on an appropriate the theoretical, technological, and practical basis. In order to establish this basis, RESCUE proposes the integrated concept links on the fly which encompasses the key technologies of distributed joint source/channel coding in lossy wireless networks, exploitation of multi-path information transfer in wireless mesh networks, distributed and centralized MAC/network protocols for channel access, and routing, cross-layer design for interference management and error control.This will allow to achieve successful and robust information transfer through multi-path networks that are constructed from lossy point-to-point links, adaptability of information quality to the specific quality of service (QoS) requirements of applications and devices for higher spectrum and energy efficiency and the integration of diverse communication infrastructure such as base stations, relays, and satellites, and terminals for network robustness and fast provision of communication. In practice, such situations are frequent in todays wireless networks with mobility of nodes, high density cells, dynamic and opportunistic frequency management that has impact on the on-going communications and future 5G networks challenges.


Shibata T.,Japan Advanced Institute of Science and Technology
Proceedings of the IEEE | Year: 2012

Recently developed robotics technologies are used not only in factories, but also in our daily living environment. Human-interactive robots, used to improve the quality of life, are becoming increasingly common. Their purposes and functions vary depending on their use, such as assistance, therapy, guide, entertainment, and education. Robot therapy, which uses robots as a substitution for animals in animal therapy, is a new robot application in the fields of welfare and patient care. The seal robot PARO began development for robot therapy in 1993. PARO was commercialized in Japan in 2005, and in Europe and the United States in 2009, and it has been used in hospitals and care facilities in approximately 30 countries. Recent research has revealed that robot therapy has a similar effect on patients as animal therapy. In 2009, the U.S. Food and Drug Administration (FDA) certified PARO as a biofeedback medical device. While PARO can be used in various kinds of therapy similar to that where real animals are used, this study focuses on its use with elderly dementia patients because explicit differences can be easily observed before and after interacting with PARO. First, this paper explains the purposes and functions of PARO. Second, because there are several observational studies on the therapeutic effects of the elderly with dementia interacting with PARO, some typical cases and interesting special cases are introduced. These cases include recovery from depression, reduction of agitation, and recovery from speech disorders. Finally, this paper discusses why PARO has the potential to change moods and behaviors of the elderly with dementia as a nonpharmacological approach. © 2012 IEEE.


Patent
Japan Advanced Institute of Science and Technology | Date: 2016-02-03

The present invention provides a new photoreactive compound which can be used in technologies for photoreactions of nucleic acid, and also provides a photoreactive crosslinking agent comprising the above photoreactive compound. A photoreactive compound represented by the following formula I can be used.


Patent
Japan Advanced Institute of Science, Technology and Sumitomo Seika Chemicals Co. | Date: 2016-06-15

The invention provides an oxide semiconductor layer that has less cracks and is excellent in electrical property and stability, as well as a semiconductor element and an electronic device each including the oxide semiconductor layer. The invention provides an exemplary method of producing an oxide semiconductor layer, and the method includes the precursor layer forming step of forming, on or above a substrate, a layered oxide semiconductor precursor including a compound of metal to be oxidized into an oxide semiconductor dispersed in a solution including a binder made of aliphatic polycarbonate, and the annealing step of heating the precursor layer at a first temperature achieving decomposition of 90wt% or more of the binder, and then annealing the precursor layer at a temperature equal to or higher than a second temperature (denoted by X) that is higher than the first temperature, achieves bonding between the metal and oxygen, and has an exothermic peak value in differential thermal analysis (DTA).


Patent
Japan Advanced Institute of Science, Technology and Sumitomo Seika Chemicals Co. | Date: 2016-10-26

It is an object of the invention to provide a thin film transistor and a method for producing the same, which will easily achieve self-aligned formation of a source/drain region without through processes under a vacuum or a low pressure or with no use of expensive equipment. An exemplary method for producing a thin film transistor according to the invention includes an aliphatic polycarbonate layer forming step of forming an aliphatic polycarbonate layer 50 that covers a gate electrode layer 40 disposed above a semiconductor layer 20 with a gate insulator 30 being interposed between the gate electrode layer 40 and the semiconductor layer 20, and also covers the semiconductor layer 20, and has a dopant causing the semiconductor layer 20 to become an n-type or p-type semiconductor layer, and a heating step of heating at a temperature causing introduction of the dopant into the semiconductor layer 20 and decomposition of the aliphatic polycarbonate layer 50.


Patent
Toyota Motor Corporation, Japan Advanced Institute of Science and Technology | Date: 2015-09-01

Provided is a water vapor adsorption-desorption material in which a substance having a LCST is uniformly retained inside pores of a mesoporous body, which can reduce energy required for regeneration, and a method for measuring LCST behavior capable of measuring LCST behavior of an ionic liquid used in the water vapor adsorption-desorption material without errors. The water vapor adsorption-desorption material includes a mesoporous body and an ionic liquid retained inside pores of the mesoporous body, the ionic liquid exhibiting LCST behavior, and the method for measuring LCST behavior of an ionic liquid used for a water vapor adsorption-desorption material, the method including detecting a change of hydration/dehydration state of a mixture of the ionic liquid and water as electric signals, by means of AC impedance measurement.


Patent
Toyota Motor Corporation, Japan Advanced Institute of Science and Technology | Date: 2016-07-20

Provided is a water vapor adsorption-desorption material in which a substance having a LCST is uniformly retained inside pores of a mesoporous body, which can reduce energy required for regeneration, and a method for measuring LCST behavior capable of measuring LCST behavior of an ionic liquid used in the water vapor adsorption-desorption material without errors. The water vapor adsorption-desorption material includes a mesoporous body and an ionic liquid retained inside pores of the mesoporous body, the ionic liquid exhibiting LCST behavior, and the method for measuring LCST behavior of an ionic liquid used for a water vapor adsorption-desorption material, the method including detecting a change of hydration/dehydration state of a mixture of the ionic liquid and water as electric signals, by means of AC impedance measurement.

Loading Japan Advanced Institute of Science and Technology collaborators
Loading Japan Advanced Institute of Science and Technology collaborators