Technology in Society, for Society

New Research Results

Organolead perovskite solar cells 11/26/2015

Real-time Analysis of the Formation Process of the Power-generating Layer in Organolead Perovskite Solar Cells- Use of X-rays at SPring-8 for first-ever confirmation of an anomalous diffusion phenomenon in the crystallization process -

AIST and JASRI have analyzed the fabrication process of organolead perovskite solar cells by X-ray diffraction using SPring-8 large synchrotron radiation facility and have elucidated the formation process of the power-generating layer. Organolead perovskite solar cells are expected to be highly efficient and inexpensive. However, many problems exist in their fabrication process. The researchers used an X-ray diffraction method to observe, in real-time with a detecting speed of 10 frames per second, the formation process of the power-generating layer during manufacturing. Anomalous diffusion and other phenomena were discovered. The obtained knowledge is expected to help accelerate the research and development of organolead perovskite solar cells.


Symbiont acquisition mechanism 10/30/2015

Elucidation of the Unique Mechanism for Symbiont Acquisition in Stink Bugs, a Group of Notorious Pest Insect
– Stink bugs screen symbiotic bacteria inside the gut –

AIST, in collaboration with Hokkaido University, the Open University of Japan, National Institute for Agro-Environmental Science, and Pusan National University, has shown that stink bugs, known as agricultural pests, select only a specific symbiotic bacterium among various bacteria ingested with food by the narrow segment developing in their gastrointestinal tract, and take the bacterium into their symbiotic organ. The present results have elucidated a unique mechanism involved in acquiring specific symbiotic bacteria, which is a characteristic shared by diverse stink bugs, and are expected to lead to the development of a new method for controlling pest insects by inhibiting the establishment of gut symbiosis.


Department of Information Technology and Human Factors 04/01/2015

From IT infrastructure to application technology: make, connect, use

The rapid growth of devices (smartphone, tablets, robots, wearables, etc.) and the Internet has increased the amount of information that is being produced and accessed by society. In order to better utilize the data produced from millions of devices and systems, we are conducting research and development in a wide range of fields at the interface between information technologies and human factors. Our mission is to engage and enrich the public through the research and development of intelligent systems combining computational and physical capabilities for human use. A key component of our mission is making new discoveries in the hardware and software that interacts with physical devices to sense and change the state of the real world. Our discoveries will lead to industry innovations and contribute to the advancement of society by facilitating the interaction of humans with cyber-physical systems.


Elastomeric Transistor 11/11/2015

Elastomeric Transistor with Softness and Robustness Comparable to Cloth
–Unbreakable when stepped on by high-heeled shoe or washed–

AIST has developed a transistor that shows softness and robustness comparable to cloth and will endure a wide range of loads (stretching, bending, twisting, compressing, and impact). The transistor does not use hard materials and is made only from soft carbon-based materials such as single-walled carbon nanotubes, rubber, and gel; this allows all materials to be integrally deformed in response to the applied load. When the transistor is attached to a piece of clothing and worn, it will become a part of the fabric and fit the human body. It is expected to be applied to human-monitoring electronics in the medical field.


Crystal movement by photoirradiation 08/21/2015

Discovery of the Phenomenon of Crystal Movement by Photoirradiation
- Utilization of liquefaction and crystallization induced by light –

AIST has discovered a phenomenon in which a crystal of organic substances having the simple structure of azobenzene moves on a glass plate. The crystal moves when it is simultaneously irradiated from different directions with ultraviolet light which liquefies the crystal and visible light which solidifies the crystal. Because the crystal moves away from the ultraviolet light source, it is possible to control the direction of crystal movement. In addition, the crystal can rise in the vertical direction when placed on a vertically positioned glass plate. In the future, applications to valves and the transport of substances and objects on a microscopic level are anticipated.


Geological Survey of Japan 04/01/2015

Understanding and living with the Earth

Geological information is essential for a country like Japan, located at a tectonically active area, to ensure a safe and secure society. The Geological Survey of Japan gathers, compiles, and provides geological information and promotes its wider use. We also develop technologies to overcome various difficulties related to global environment protection, exploration of minerals and energy resources, and natural disaster mitigation, and coordinate international cooperation as a national representative.


DC voltage standard 09/10/2015

Development of a Compact Direct Current Voltage Standard with the World’s Highest Level of Performance
- Achievement of high temporal stability of ±2 ppm/year -

AIST has developed a compact direct current (DC) voltage standard with the world’s highest level of performance in temporal stability and temperature stability, in collaboration with ADC Corporation. The developed DC voltage standard was achieved by employing a quantum standard for precise measurement of the voltage standard unit that serves as a reference standard and by utilizing circuit noise countermeasures, heat insulating packaging, and a modularization technology. High-precision voltage measurement becomes possible at R&D and quality management departments of manufacturers, universities, research institutions, and calibration facilities, and the efficiency of calibration operations is expected to improve dramatically.


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