Tokyo Institute of Technology

Quality-controlled active learning via Gaussian processes for robust structure–property learning in autonomous microscopy

Abstract Autonomous experimental systems are increasingly used in materials research to accelerate scientific discovery, but their performance is often limited by low-quality, noisy data. This issue is especially problematic in data-intensive structure–property learning tasks suc...

From Simplicity to Complexity: Substituent‐Controlled Z ′ Multiplicity as a Design Principle for Thermally Robust Yet Programmable Anisotropic Expansion

Anisotropic thermal expansion in molecular crystals has predominantly been reported for low-Z' systems (Z' ≤ 2), in which only a few independent molecules occupy the asymmetric unit. In such crystals, thermal expansion is often interpreted using simplified models based on rigid m...

Controlling Valence Band for Cu2Sn0.38Ge0.62S3 Particles via Li Substitution at Cu Sites

Abstract Cu2(Sn,Ge)S3 (CTGS) is a promising near-infrared-responsive photocathode material whose conduction band minimum can be tuned by varying the Sn/Ge ratio, whereas direct control of the valence band maximum (VBM) remains challenging because of the large Cu 3d contribution t...

A Programmable Nanovesicle Platform for MegapascalPressure Sensing

Abstract Hydrostatic pressure (HP) is a subtle yet pervasive force that shapes chemistry and biology from the ocean floor to living cells─yet real-time HP sensing at the microscale remains elusive. Here, we report pyrene-modified polyionic complex vesicles (Pyr-PICsomes) as a cla...

Chimeric pseudomonad phasin enhances biosynthesis of short-medium-chain-length polyhydroxyalkanoates (PHAs) by Cupriavidus necator employing class II PHA synthase

Copolyesters of ( R )-3-hydroxybutyrate and medium-chain-length ( R )-3-hydroxyalkanoate) [P(3HB- co -mcl-3HA)] are a highly flexible kind of polyhydroxyalkanoates (PHAs), although the efficient biosynthesis still remains a challenge. Biosynthesis of P(3HB- co -mcl-3HA) copolyest...

Exceptionally high thermoelectric power factors at low temperatures in heavily doped p- and n-type Ge-rich Ge1−xSnx films

Low-temperature thermoelectric thin films compatible with semiconductor technology are of increasing interest for cryogenic energy harvesting and thermal management of advanced Si-based electronics. Here, we show that heavily doped p- and n-type Ge1−xSnx epitaxial films exhibit e...

Wide-field magnetic imaging of shielding-current-driven vortex rearrangement under local heating using diamond quantum sensors

Understanding and controlling vortex motion in superconductors are important both for suppressing dissipation in superconducting devices and for device applications that exploit vortices. In this work, we quantitatively imaged the stray magnetic field distribution of vortices in...

Nonreciprocityof Domain-Wall Motion Induced by InterlayerDzyaloshinskii–Moriya Interaction

Abstract The Dzyaloshinskii–Moriya interaction (DMI) stabilizes chiral spin textures, making it essential for spintronic devices. Interlayer DMI is an antisymmetric exchange interaction between separated magnetic layers. However, its influence on spin–orbit torque-driven domain w...

Direct composite injection molding with bilayered three-dimensional-printed clear index: a fully digital workflow case report of post-orthodontic anterior tooth wear

Background Recently, a new generation of high-strength flowable dental composites has been introduced by manufacturers.The manufacturers claim that these materials have enhanced mechanical and physical properties and are suitable for use in a wide range of direct anterior and pos...

Prediction of plutonium content of BWR/MOX fuel using a neural network

The Nuclear Material Balance (NMB) code is a comprehensive nuclear fuel cycle simulator developed by the Institute of Science Tokyo and the Japan Atomic Energy Agency. By modeling a fleet of reactors, fuel cycle simulators like NMB can help to optimize uranium and plutonium utili...

Systematic Tuning of Lattice Strain and Surface Structures of Platinum Alloy Nanowires for Enhanced Oxygen Reduction Performance

Abstract The development of nanostructured catalysts with improved oxygen reduction reaction (ORR) performance is pivotal for advancing high-performing polymer electrolyte fuel cells (PEFCs). In this study, we synthesized Pt-alloy nanowires with systematically tuned morphologies,...

Progress of three-layer structure RFQ linacs and the applications

The three-layer structure RFQ linac features a simple structure and fabrication method while providing excellent electrical performance. The main components of the four-vane RFQ cavity (four vane electrodes and the cavity body) are divided into three parts, and machined with high...

Visible‐Light‐Induced Carbon–Hydrogen Phosphonylation of Conjugated Polymers via Electron Donor–Acceptor Complex Activation

ABSTRACT Electron donor–acceptor (EDA) complexation has emerged as a sustainable strategy for visible‐light‐driven reactions. Although numerous EDA‐based transformations have been applied to small aromatic molecules, conjugated polymers (CPs) have not yet been explored as substra...

Stable core-encapsulation of indium-111 in crosslinked polyionic complex micelles and assessment of its biodistribution

Radioactive isotopes, such as Indium-111 ( 111 In), are pivotal for highly sensitive noninvasive imaging and targeted radiotherapy. However, achieving stable in vivo retention remains a critical barrier. Conventional nanocarriers typically rely on surface-bound chelators, exposin...

Potential EnergySurfaces of Environment-SensitiveFlapping Fluorophores: FLAP

Abstract A series of FLAP molecules are one of the functional fluorescent probes that can sense subtle changes in local environments such as viscosity, polymer free volume, and external mechanical force. In this work, potential energy surfaces (PESs) of a representative Flexible...

Polymerization as a structuring strategy for hierarchical order and function

Abstract Polymerization has long been used as a tool for structural fixation: liquid or soft precursors are converted into solids. Recent advances in polymerization-based processing technologies have greatly expanded this role, now allowing complex external architectures to be in...

Trade-off between repository footprint and radiotoxicity in geological disposal of vitrified high-level waste from spent MOX fuels: quantitative assessment of simplified minor actinide separation

Radioactive waste management remains a critical challenge for the sustainability of nuclear energy systems, particularly for closed fuel cycles utilizing mixed oxide (MOX) fuel. MOX fuel contains significantly higher concentrations of minor actinides (MAs) and heat-generating nuc...