Highly Efficient Oxygen Evolution Reaction Enabled by Phosphorus Doping of the Fe Electronic Structure in Iron–Nickel Selenide Nanosheets

The precise electronic structure regulation of Fe in Ni0.75Fe0.25Se2 by P doping leads to the P─Ni0.75Fe0.25Se2 electrode with remarkable electrocatalytic activity and stability for oxygen evolution reaction (OER). Abstract The electronic structure of active sites is critically important for electrochemical reactions. Here, the authors report...

12h

Concentrated Electrolytes Widen the Operating Temperature Range of Lithium‐Ion Batteries

Owing to the highly stable solvation structure, concentrated electrolyte enables the stable operation of LiNi0.6Co0.2Mn0.2O2|graphite full cells in a wide temperature range from −20 to 100 °C, which alleviates various challenges faced by commercial dilute electrolytes. This study demonstrates the potential to build a safe battery system without the...

1d

Colon‐Targeted Adhesive Hydrogel Microsphere for Regulation of Gut Immunity and Flora

A colon-targeting and mucoadhesive hydrogel core–shell microsphere is fabricated by advanced gas-shearing technology for treatment of inflammatory bowel disease. The oral-administrated microsphere targets the colon where the alginate shell collapses and the HA-SH-Ag hydrogel core is released, which congregates on the inflamed colon mucosa for regulation...

1d

Electrotherapies for Glioblastoma

Electrotherapy uses electric fields to target various biological mechanisms for therapeutic outcomes. The current state of intermediate frequency electric fields including tumour-treating fields, and reversible/irreversible electroporation are discussed in both pre-clinical and clinical models of glioblastoma. Where possible, these techniques are mapped...

1d

Multistate Switching of Spin Selectivity in Electron Transport through Light‐Driven Molecular Motors

The efficiency of electrons transport through chiral systems depends on their spin. Hence, chiral molecules are spin filters. Controlling the molecules' chirality provides a way to define the spin polarization. This molecular machine performs unidirectional rotations, inverting handedness of the molecule and therefore the spin-polarization at each stage...

1d

Atomically‐Precise Texturing of Hexagonal Boron Nitride Nanostripes

Vapor growth of borazine on a curved Rh surface leads to continuous hexagonal boron nitride (hBN) monolayer coating, under which nanomesh-quantized Rh(111) terraces and stepped Rh(337) facets segregate, The latter reveals a perfect hBN/Rh interface registry, with all N atoms anchoring at step on-top positions. This imprints a strong uniaxial anisotropy...

1d

Phononic Thermal Transport along Graphene Grain Boundaries: A Hidden Vulnerability

Contrary to conventional wisdom, phononic transport in graphene is vulnerable to grain boundaries comprising 5-7 defects aligned along the thermal gradient. Atomistic simulations uncover a dual role of the strain field as a reflective phononic diffraction grating, showing either specular (left) or diffuse (right) phonon reflections (depending on the...

2d

Multifunctional Nanodrug Mediates Synergistic Photodynamic Therapy and MDSCs‐Targeting Immunotherapy of Colon Cancer

A liposome encapsulating phosphoinositide 3-kinase gamma inhibitor IPI-549 and photosensitizer chlorin e6 (Ce6) mediates immunogenic photodynamic therapy synergizing with myeloid-derived suppressive cells (MDSCs)-targeting immunotherapy, which significantly inhibits colon cancer growth via facilitating the dendritic cells maturation and tumor infiltration...

3d

Biomaterials and Oxygen Join Forces to Shape the Immune Response and Boost COVID‐19 Vaccines

Cryogels loaded with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) nucleocapsid (N) and receptor-binding domain (RBD) proteins (antigens), CpG (adjuvant), and GM-CSF (immunomodulatory factor) activate both arms of the adaptive immune system. Additionally, oxygen, used as a co-adjuvant, boosts the production of binding/neutralizing antibodies...

3d

Wireless Soft Scalp Electronics and Virtual Reality System for Motor Imagery‐Based Brain–Machine Interfaces

This image shows a wearable scalp electronic system with virtual reality for motor imagery-based brain–computer interfaces. The all-in-one, portable soft system includes an array of soft microneedles, stretchable interconnectors, and flexible circuits in a wearable platform. Abstract Motor imagery offers an excellent opportunity as a stimulus-free...

3d