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New Research Results

Superconducting Tape 03/05/2018

World’s Highest Critical Current Density in Magnetic Field Realized by Low Cost High Temperature Superconducting Tape
– Promoting practical applications of high-temperature superconductivity –

AIST has developed yttrium-based oxide superconducting tapes that allow large critical current capacity in a strong magnetic field. AIST has improved the characteristics of the yttrium-based oxide superconducting tapes by fabricating ultra-fine artificial pinning centers (APCs) with uniform dispersion and high density using a chemical solution decomposition method which costs less than vapor phase methods. This has achieved a maximum critical current density of 4 mega-amperes that can flow while maintaining the superconducting state (at liquid nitrogen temperature, 65 K, per 1 cm2 in a magnetic field of 3T), and the critical current value exceeds 360 amperes.

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RNA reference material 5/26/2017

Development of Artificial Nucleic Acid Reference Materials for Accuracy Control of Microbiome Analysis
– Contribution to highly reliable microbiota analysis by next-generation sequencing –

AIST has developed artificial nucleic acid reference materials as internal standards for accuracy control of analysis of microbiomes by next-generation sequencing. The 16S rRNA gene is widely used for the phylogenetic classification of microorganisms. AIST researchers designed artificial 16S rRNA reference materials to be amplified by PCR and to allow the amplified base sequences to be differentiated from natural genes during data analysis, and produced twelve types of the reference materials. When a mixture of the reference materials is used as an internal standard for microbiome analysis, the accuracy of the obtained base sequences can be evaluated and the performance of quantitative analysis can be controlled.

Figure of Developed artificial nucleic acid reference materials and a mixture of the reference materials

Shape measurement 07/30/2018

Success in High-speed Shape Measurement under Direct Sunlight Using Pattern Projection
– Achieved by image processing for removing ambient light as noise –

AIST has developed a method for measuring the shape of an object that moves/deforms at high speed by accurately detecting a light pattern projected on the object. Applying the technology for removing noise by converting a signal in a narrow frequency range to that in a wide frequency range, which is used in wireless communication devices, the developed technology can remove the effect of strong ambient light such as direct sunlight.

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Shielding paint 06/12/2018

Electromagnetic Wave Shielding by a Paint with Carbon Nanotubes
– Development of electromagnetic wave shielding paint films on various base materials that are usable even in harsh environments –

Using the Super-Growth single-wall carbon nanotubes, AIST has developed an aqueous paint that can be formed into a thin film with a strong shielding effect against electromagnetic waves. The developed aqueous paint can be applied on a wide variety of base materials. The formed film is flexible and resistant to bending, and it can follow deformation of the base material.

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Voltage-controlled MRAM 08/13/2018

Significant Reduction in Writing Error Rate of a Voltage-controlled Magnetic Memory
– Accelerating the development of a writing technique of a voltage-controlled non-volatile magnetic memory with ultra-low power consumption –

When applying pulsed voltage to a magnetic tunneling junction element having an ultrathin metal ferromagnetic layer (memory layer), magnetization reversal can be induced. By optimizing the magnetic characteristics of the memory layer, AIST has reduced the writing error rate of a voltage-controlled magnetic memory (voltage torque MRAM) by double digits or more compared with past reported values. The developed technology will accelerate the R&D of highly reliable and high-speed voltage torque MRAMs with ultra-low power consumption.

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Crustal deformation 07/26/2018

Unraveling the Mystery of Crustal Deformation of the Japanese Islands
– Movement of the Philippine Sea Plate causes the east-west contraction –

Thought experiments in combination with analogue models have elucidated the cause of the east-west contraction and crustal deformation of the Japanese islands in the Quaternary Period. It was concluded that the cause of the east-west contraction is not movement of the Pacific Plate itself, as conventionally thought, but rather movement of the Philippine Sea Plate.

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Emission Mechanism 03/09/2018

Mystery of the Emission Mechanism of Materials for Next-Generation Organic Light-Emitting Diodes Unveiled!
–Towards low-cost organic light-emitting diodes –

AIST has elucidated the emission mechanism of the materials for next-generation organic light-emitting diodes, namely thermally activated delayed fluorescent materials, using an advanced spectroscopic technique developed by AIST. The materials were designed and developed by Kyushu University. A group of molecules with high emission efficiency has a characteristic molecular structure. The spectroscopic technique used will be sophisticated further to observe the emission process in detail.

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