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Ferrite nanoparticles serve as potent heterogeneous Fenton-like catalysts, producing reactive oxygen species (ROS) for decomposing organic pollutants. We investigated the impact of temperature and copper content on the catalytic activity of…

Copper is a highly promising catalyst for the electrochemical CO$_2$ reduction reaction (CO2RR) since it is the only pure metal that can form highly added-value products such as ethylene and ethanol. Since the CO2RR takes place in aqueous…

Materials Science · Physics 2025-09-23 Linus C. Erhard , Johannes Schörghuber , Aleix Comas-Vives , Georg K. H. Madsen

We report the performance of two prototype TeO2 macrobolometers, operated at ~25 mK, able to identify events due to energy deposited at the detector surface. This capability is obtained by thermally coupling thin Ge active layers to the…

Nuclear Experiment · Physics 2009-11-25 Luca Foggetta , Andrea Giuliani , Claudia Nones , Marisa Pedretti , Samuele Sangiorgio

Photocatalytic CO2 reduction is limited by inefficient CO2 activation and poor solar spectrum utilization. Here, we discovered and revealed the vibration coupling mechanism among photons, phonons, and molecules, which remarkably enhances…

Materials Science · Physics 2025-08-28 Chen Sun , Yimin Xuan

Band bending at semiconductor surfaces induced by chemical doping or electric fields can create metallic surfaces with properties not found in the bulk, such as high electron mobility, magnetism or superconductivity. Optical generation of…

Materials Science · Physics 2021-02-16 Lukas Gierster , Sesha Vempati , Julia Stähler

The deposition of a thin oxide layer at metal/semiconductor interfaces has been previously reported as a means of reducing contact resistance in 2D electronics. Using X-ray photoelectron spectroscopy with in-situ Ti deposition, we fabricate…

Materials Science · Physics 2019-10-10 Keren M. Freedy , David H. Olson , Patrick E. Hopkins , Stephen J. McDonnell

The dielectric enhancement and modulation of a cuprous oxide (Cu2O) microwave-active catalyst material is investigated from an experimental and computational point of view. Experimental synthesis of two particle morphologies that included a…

We study high-field electrical breakdown and heat dissipation from carbon nanotube (CNT) devices on SiO2 substrates. The thermal "footprint" of a CNT caused by van der Waals interactions with the substrate is revealed through molecular…

Mesoscale and Nanoscale Physics · Physics 2010-11-13 Albert Liao , Rouholla Alizadegan , Zhun-Yong Ong , Sumit Dutta , K. Jimmy Hsia , Eric Pop

Cooling the trapped atoms toward their motional ground states is key to applications of quantum simulation and quantum computation. By utilizing nonreciprocal couplings between constituent atoms, we present an intriguing dark-state cooling…

Quantum Physics · Physics 2022-11-17 Chun-Che Wang , Yi-Cheng Wang , Chung-Hsien Wang , Chi-Chih Chen , H. H. Jen

A search for new topological quantum systems is challenging due to the requirement of non{trivial band connectivity that leads to protected surface states of electrons. A progress in this field was primarily due to a realization of band…

Materials Science · Physics 2018-06-13 Yongping Du , Er-jun Kan , Hu Xu , Sergey Y. Savrasov , Xiangang Wan

The search for highly efficient and low-cost catalysts is one of the main driving forces in catalytic chemistry. Current strategies for the catalyst design focus on increasing the number and activity of local catalytic sites, such as the…

Overheating has emerged as a primary challenge constraining the reliability and performance of next-generation high-performance electronics, such as chiplets and (ultra)wide bandgap electronics. Advanced heterogeneous integration not only…

We study the ring-opening decomposition of ethylene carbonate in the presence of a single lithium atom and on the surface of lithium metal. Combining accurate electronic structure theory, enhanced sampling, and machine learning, we…

Chemical Physics · Physics 2025-09-18 Sohang Kundu , Diana Chamaki , Hong-Zhou Ye , Garvit Agarwal , Timothy C. Berkelbach

Taking into account the electron-rich and visible light response of thiophene, first-principles calculations have been carried out to explore the photocatalytic activity of donor-acceptor polymers incorporating thiophene and boron. The…

Materials Science · Physics 2024-01-17 Preeti Bhauriyal , Thomas Heine

The (001)SrTiO3 crystal surface can be engineered to display a self-organized pattern of well-separated and nearly pure single-terminated SrO and TiO2 regions by high temperature annealing in oxidizing atmosphere. By using surface sensitive…

Submicron core/shell Ti/TiOx photocatalyst is successfully synthesized via single-mode magnetic microwave (SMMW) assisted direct oxidation of planetary ball-milled TiH2. The thickness of TiOx shell including highly concentrated defects such…

Applied Physics · Physics 2022-02-04 Kunihiko Kato , Yunzi Xin , Jeongsoo Hong , Ken-ichi Katsumata , Takashi Shirai

Methane (CH4) and nitrous oxide (N2O) are potent greenhouse gases that represent substantial chemical energy. Conversion of these abundant waste gases to high-value chemicals typically requires high temperatures up to 1000 C, producing…

Plasmons can drive chemical reactions by directly exciting intramolecular transitions. However, strong coupling of plasmons to single molecules remains a challenge as ultra-small mode volumes are required. In the presented work, we propose…

We determined a full 3D atomic structure of a dumbbell-shaped Pt nanoparticle formed by a coalescence of two nanoclusters using deep learning assisted atomic electron tomography. Formation of double twin boundary was clearly observed at the…

Materials Science · Physics 2022-02-09 Juhyeok Lee , Chaehwa Jeong , Yongsoo Yang

To harness the true potential of topological insulators as quantum materials for information processing, it is imperative to maximise topological surface state conduction, while simulateneously improving their quantum coherence. However,…

Mesoscale and Nanoscale Physics · Physics 2018-08-21 Abhishek Banerjee , R. Ganesan , P. S. Anil Kumar
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