Applied Physics Express

A research team led by researchers from Osaka University created an aluminum-nitride device that can convert visible light into deep-ultraviolet light through the process of second harmonic generation. This work can lead to the development of practical devices that can sterilize surfaces with ultraviolet radiation while using less energy.

Researchers from The University of Tokyo Institute of Industrial Science report a machine learning-based model for predicting the bonding properties of materials

A recent study has measured the internal quantum efficiency (IQE) of Zinc-Oxide (ZnO) crystals in both the light-emitting process and non-light-emitting process.

Tohoku University researchers have improved a method for probing semiconducting crystals with light to detect defects and impurities. The details of their 'omnidirectional photoluminescence (ODPL) spectroscopy' set-up were published in the journal Applied Physics Express, and could help improve the fabrication of materials for electric cars and solar cells.

A new X-ray imaging technique could identify lesions and tumors before ultrasound or MRI can.

Researchers at Tohoku University have discovered a way to detect carbon impurity in nitride semiconductors using light.

A dietary fibre can help separate out semiconducting carbon nanotubes used for making transistors for flexible electronics.

Tohoku University researchers have developed a technique using a hollow sphere to measure the electronic and optical properties of large semiconducting crystals. The approach improves on current photoluminescence spectroscopy techniques and could lead to energy savings for mass producers, and thus consumers, of power devices.

A team of Japanese researchers has discovered a new mechanism to explain stochastic resonance, in which sensitivity to weak signals is enhanced by noise. The finding is expected to help electronic devices become smaller and more energy-efficient.

Researchers at Tohoku University have, for the first time, successfully demonstrated the basic operation of spintronics-based artificial intelligence.

Researchers at Tohoku University and the National Institute of Information and Communications Technology (NICT) in Japan, have developed a novel ultra-compact heterogeneous wavelength tunable laser diode.

IOP Publishing congratulates Japanese-born scientists Isamu Akasaki, Hiroshi Amano and Shuji Nakamura on becoming the latest Nobel prize laureates for their invention of “efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources"

Using a soft X-ray microscope, a Japanese research team has examined the nanostructure of organic solar cells and discovered that different molecules are intermixed in each molecular domain.

Silicon-based semiconductor devices dominate the microelectronics industry and are used for the fabrication of high density integrated circuits comprising of memory and processing devices. However, silicon has an indirect band gap, which severely limits its use for fabricating photonic devices such as light emitting diodes (LEDs) and lasers.

Development of novel transistor with combined logic and memory functions with power consumption reduced to one-millionth that of conventional devices.