NANO LETTERS

J. Zöllner, C. Doganlar, C. García Marcilla, S. Meder et al.

Silicon photonic integrated circuits critically depend on compact on-chip light sources, for which nanowire (NW) lasers are an attractive solution. However, their practical implementation is often limited by broad emission line widths and poor frequency stability resulting from weak optical feedback. Here, we integrate individual GaAsSb NWs by transfer-printing onto silicon-on-…

Gianluigi Baiardi, Alex Boschi, Giulia Piccinini, Vaidotas Mišeikis et al.

Advances in chemical vapor deposition (CVD) growth have driven graphene crystal quality to unprecedented levels, yet it is still unknown whether this route can realize the fragile flat-band and correlated states of the magic-angle (MA) twisted bilayer graphene (TBG). Here, we report on the experimental observation by room-temperature nano-angle-resolved photoemission spectrosco…

Chengxin Xiao, Cong Xiao, Dawei Zhai, Wang Yao

Electrons in layered van der Waals materials possess a layer pseudospin characterizing their wave function distribution among layers. In twisted structures, this pseudospin forms nontrivial textures, leading to intriguing phenomena such as the layer Hall effect (LHE), where distinct layer Hall currents flow, despite the presence of time-reversal symmetry. In chiral bilayers, th…

Liu Yang, Ming Li, Shui-Sen Zhang, Hang Zhou et al.

Nonvolatile magnetotransport in a single magnetic material is usually tied to spin-orbit coupling and therefore rarely exhibits a large ON/OFF ratio. Here we show that this limitation can be overcome through magnetoelastic reconstruction of nonrelativistic real-space transport paths. Using the two-dimensional antiferromagnet FePS3 as a representative system, first-principles qu…

Yinghao Li, Yuntong Sun, Mengshan Chen, Yingtang Zhou et al.

High-entropy oxides (HEOs) are promising electrocatalysts for breaking the Sabatier principle and maximizing their oxygen evolution reaction (OER) efficiency. Herein, the effect of lanthanide doping on RuIr-based HEOs is investigated through theoretical and experimental studies. The optimized amorphous RuIrMnCoGd high-entropy metallene oxides (a-Gd_HEMOs) with moderate intermed…

Alexandro I. DeAnda, Chen Xie, Marigold G. Malinao, Hugo Stolarczyk et al.

Mechanoluminescent particles, including ZnS, are promising intravenous light sources for biomedical imaging. Here, we report a serendipitous finding that during femtosecond two-photon microscopy, a microsecond-scale prolonged luminescence ("comet tail") is observed, whereas it is absent or greatly reduced under confocal continuous-wave excitation. We found that the decay time c…

Abhay Srivastava, Avijit Maity, Parth Kumar, Subinoy Rana

Living systems operate far from equilibrium, continuously consuming energy to maintain transient functional compartments. Mimicking such dynamic organization through bottom-up self-assembly remains a central challenge in systems chemistry and synthetic biology. Synthetic life-like systems aim to recapitulate key features of living matter, including energy-driven (i.e., dissipat…

Yun Liu, Lingda Meng, Yilin Ma, Kaikai Yang et al.

Proton exchange membrane water electrolyzers (PEMWEs) are key for renewable hydrogen production, featuring two critical charge transport interfaces: porous transport layer/catalyst layer (PTL/CL) and PTL/flow field (PTL/FF). To study interface charge transport, three Pt-loaded PTL anodes were combined with a normal or low-loading membrane electrode. Normal loading: optimized Pt…

Suhwan Yoo, Sang Heon Han, Yun Jeong Hwang

Abstract Controlling product selectivity in Cu-catalyzed electrochemical CO2 reduction remains challenging, as competing proton-coupled electron transfer pathways are governed by the balance between *CO coupling and protonation kinetics. Here, we demonstrate that this balance is precisely tuned by engineering interfacial water through surface ligand functionalization, without a…

Min Zhang, Youbin Zheng, Ronghao Bai, Runhua Chen et al.

Electrochemical CO2 reduction (CO2RR) to multicarbon (C2+) products is essential for carbon neutrality, yet achieving high selectivity at industrial current densities remains challenging. While cationic and nonionic surfactants modulate the microenvironment, the role of anionic surfactants in C-C coupling is elusive. Herein, we present an interfacial engineering strategy using …

Kui Chu, Jin Liu, Lei Gao, Siqiao He et al.

The development of active nanophotonics demands configurable materials with high spatial resolution. Here, we demonstrate the direct fabrication of a flat optical diffraction grating utilizing a lithography-free, probe-based nanoscale patterning strategy. Specifically, local hydrogen ion injection via a Pt-coated atomic force microscopic probe triggers a seven-order-of-magnitud…

Kazuki Kamada, Keisuke Shinokita, Fanyu Zeng, Ryo Kitaura et al.

Abstract Manipulating nanoscale light–matter interactions on ultrafast time scales is indispensable for future polaritonic devices. Hyperbolic phonon polaritons (HPhPs) in van der Waals materials enable deep subwavelength confinement of electromagnetic fields in the infrared region and long-distance propagation of polaritonic waves. However, achieving ultrafast imaging and opti…

Xingyu Yang, Ye Mou, Mathieu Mivelle

Generating localized DC potentials without intrusive contacts remains a fundamental challenge in optoelectronics and hot-carrier catalysis. Here, we theoretically demonstrate the all-optical generation of a static electric field within a single gold L-shaped nanoantenna. By exploiting the spectral overlap between orthogonal dipolar and quadrupolar plasmonic modes, we engineer a…

S. Lopes, Q. Schaeverbeke, M. M. Desjardins, D. Lacour et al.

On-chip micromagnets generate local magnetic-field asymmetries, enabling electrical control of spin qubits via electric dipole spin resonance and their integration into circuit quantum electrodynamics (QED) architectures. Accurate prediction of spin-qubit performance requires modeling micromagnet stray fields beyond the saturated-magnet approximation, accounting for nonuniform …

Alessandro Surrente, Mateusz Dyksik, Paulina Plochocka, Michał Baranowski

Abstract not available. Bibliographic information is searchable.

Mehrdad Shiri, Leopoldo Mejía, Ignacio Franco, Thorsten Hansen et al.

Abstract Open-shell π-conjugated systems have emerged as promising molecular wires that can sustain unusually high low-bias conductance over tens of nanometers. However, predictive design rules remain limited because near-degeneracy and spin polarization give rise to correlated electronic states that are not reliably captured by standard density functional theory and Landauer t…

Authors not provided

Abstract not available. Bibliographic information is searchable.

Weifan Cai, Guangchao Zhao, Xin Ju, Hong Kuan Ng et al.

Abstract Ferroelectric materials with a negative capacitance (NC) effect, incorporated with a dielectric layer, hold great potential for low-power electronics. However, integrating an NC layer into ultrathin silicon-based electronics still faces critical challenges, including thickness scalability and fatigue reliability concerns. Here, we report two-dimensional (2D) negative c…

Xinjian He, Tongtong Yu, Haoyu Deng, Changhe Du et al.

Reversible modulation of friction in atomically thin two-dimensional materials remains challenging in micro- and nanotribology, primarily due to the difficulty in achieving control over interfacial interactions. Harnessing switchable internal degrees of freedom provides a viable strategy for controlling interfacial energy dissipation. Here, ferroelectric polarization reversal i…

Yucheng Zhu, Jiyuan Xu, Jie Cheng, Nitin Mallik et al.

Phase engineering in two-dimensional materials provides a powerful route to tuning electronic states and enabling functional devices. TaSe2 is a representative transition metal dichalcogenide with distinct correlated phases associated with its 1T and 2H polytypes. However, experimentally realizing and unambiguously verifying a complete 1T-to-2H transition in TaSe2 remains a maj…