Tokyo Institute of Technology

Blue Upconversion Organic Light‐Emitting Diodes Achieving 1000 cd m −2 With an Operating Voltage of 2.7 V by Suppressing Interfacial Exciton Quenching

ABSTRACT Triplet–triplet annihilation upconversion (TTA‐UC) provides an effective route for generating high‐energy excitons from low‐energy states, but its efficiency is intrinsically limited at low triplet density because first‐order decay pathways dominate over the bimolecular...

Structural Motif Selection in Fluorinated Metal–Organic Chalcogenides Driven by Ligand Electrostatics

Abstract Hybrid organic–inorganic materials enable systematic structural tuning through chemical modification of organic ligands. Predictive control, however, requires a mechanistic understanding of how ligand chemistry and inorganic frameworks jointly determine structural motif...

Implementation of a GeoAI Model to Detect Ground-Mounted Photovoltaic Power Stations in Thailand

A comprehensive and publicly available geospatial database of PV installations is crucial for effective policymaking and infrastructure planning towards Thailand’s carbon neutrality and net-zero greenhouse gas emissions plan. This study introduces a national-scale mapping framewo...

Improved core design and integrated back-end fuel cycle scheme for 200 MWt marine molten chloride fast reactor

This study presents an improved core design and the introduction of integrated back-end fuel cycle scheme for a 200 MWt Molten Chloride Fast Reactor (MCFR) intended as nuclear marine propulsion. The objective is to increase fuel burnup and reducing uranium consumption whilst main...

Griffiths Inequalities and Gibbs–Bogoliubov Inequality for General Gauge Glasses with Gaussian Disorder on Nishimori Line

We consider a class of gauge glass models with Gaussian disorder on the Nishimori line, including the Ising spin glass, the XY gauge glass, the Z q gauge glass, and the gauge-invariant Potts model. We prove that the first and second Griffiths inequalities hold for these models on...

Oxidative Fluorination of β-Ketoamides: Guanidinium Iodides as Iodoarene Alternatives

Abstract A guanidinium iodide-catalyzed oxidative fluorination of β-ketoamides enables umpolung α-fluorination, replacing iodoarenes with a simple iodide source. Using HF·pyridine as the fluoride source and mCPBA as the oxidant in dichloroethane, quaternary α-fluoro-β-ketoamides...

Hydraulicity in Organic Polymers Enabled by Hydrophobization Upon Water‐Triggered Curing of Hydrophilic Chains

Water-curing capability of cementitious materials, commonly known as hydraulicity, is key to their widespread use through simply mixing powder with water to form desired robust structures. However, hydraulicity has been difficult to achieve for organic materials due to the lack o...

Impact and icing of a single water droplet on smooth and superhydrophobic surfaces: Decoupled modeling of interfacial thermodynamics and bulk solidification

Elucidating the transient impact and icing dynamics of a single water droplet is critical for improving the efficacy of anti-icing agents, but the complex coupling of fluid flow, phase change, and micro-scale interfacial phenomena poses a significant challenge. This study present...

Spectroscopic Analysis of Hydration Structures in PEG‐ and PMPC‐Containing Hydrogels by Pressure‐Controlled ATR‐IR Combined With Multivariate Curve Resolution

ABSTRACT Hydration structures govern the properties and functions of hydrogels, yet selectively measuring hydration water in the presence of abundant bulk water remains analytically challenging. Here we applied pressure‐controlled attenuated total reflection infrared spectroscopy...

In vitro assessment of cell proliferation and migration induced by crude lychee seed extract in human gingival fibroblast cells (HGF-1)

Abstract Background: Human gingival fibroblasts (HGFs) are central regulators of oral wound healing. Oxidative stress impairs fibroblast viability and motility, potentially delaying wound healing. Lychee seeds are rich in antioxidants, such as phenolics and flavonoids. Their anti...

Dry Anaerobic Digestion as a Waste-to-Energy Pathway: A Systematic Review of Performance, Scalability, and Deployment Evidence from 2010 to 2025

Dry anaerobic digestion (DAD) is increasingly recognized as a promising waste-to-energy pathway for treating high-solids organic wastes. However, the extent to which the contemporary peer-reviewed literature addresses conditions relevant to scalable implementation remains unclear...

Interfacial relaxation time as a metric for hidden interfacial states in all-solid-state lithium metal batteries with an Ag–C interlayer: An X-ray computed tomography study

In all-solid-state lithium (Li) metal batteries, incomplete interfacial recovery after discharge triggers localized resistance and degradation. Although carbon interlayers stabilize the interface, conventional metrics, such as macroscopic thickness profiles and Coulombic efficien...

Carbonate-Based Crosslinked Composite Electrolytes Reinforced with Silica Nanofiber Membrane

Abstract A crosslinked carbonate-based composite electrolyte incorporating an electrospun silica nanofiber (SNF) membrane was developed for Li batteries. Compared with the SPE, the resulting SNF-CPE exhibited higher ionic conductivity and improved mechanical properties. The Li|SN...

Optically‐Driven Wireless Microelectronics for IoT and Wearable Biomedical Devices

Wirelessly‐operated microdevice technology for informatization of non‐electric objects will be a key breakthrough for advanced IoT framework. In this paper, we identify the requirements for microdevice technology in such applications and explain why an optical power transfer/ener...

GH172 Difructose Dianhydride I Synthase: A Two‐Stepped Journey via Glycosylation and Cyclization Using QM/MM Metadynamics

ABSTRACT The difructose dianhydride I synthase/hydrolase catalyzes the reversible transformation of inulobiose into difructose dianhydride I, a component of caramel. The proposed reaction mechanism of such a transformation consists of a glycosylation step followed by a cyclizatio...

Sensitivity Analysis of Short‐Term Frequency Stability to Post‐Contingency Active Power Increase and Support Duration from Deloaded Wind Turbines

The growing deployment of Type‐4 wind turbine generators (WTs), driven by carbon neutrality and net‐zero policies, may challenge frequency stability in power systems. Unlike synchronous generators, WTs connected to the power system via converters do not provide inertia. Neverthel...

Single-step fabrication of a large-scale broadband sunlight absorber based on multiple directional grating structures

Abstract Broadband light absorbers have attracted great interest worldwide due to their high efficiency in converting light into heat. However, most absorbers show strong light absorption only in the visible spectrum, and their performance typically declines sharply in the near-i...

Autonomous Vehicles, Urban Deployment, and Welfare Effects

ABSTRACT This paper provides a theoretical analysis of the effects of autonomous vehicles (AVs) on the spatial structures of future cities. We consider two types of AVs, private AVs (PAVs) and shared AVs (SAVs). We assume that AVs have a lower marginal travel time cost than human...

An ultralightweight anode-exhaust-driven micro-ejector enabling zero-parasitic-power cathode air supply for compact fuel cell systems

An ultralightweight (0.2 g) stereolithographically fabricated micro-ejector was developed for passive cathode air supply in compact proton exchange membrane fuel cell (PEFC) systems. Unlike conventional miniature fuel cell systems that rely on mechanical air pumps and incur signi...

Direct speciation of ultra-trace platinum in marine ferromanganese oxides by wavelength-dispersive XAFS

Abstract Ultra-trace platinum (Pt) in marine ferromanganese oxides (FMOs) has remained inaccessible to direct XAFS analysis because of its extremely low abundance and severe interferences from co-existing elements. We achieved the first direct speciation of Pt at the 1 μg g−1 lev...