Quantum Composites with the Functionality Defined by the Charge-Density-Wave Phase Transitions
Zahra Barani, Tekwam Geremew, Megan Stokey, Nicholas Sesing, Maedeh Taheri, Matthew J. Hilfiker, Fariborz Kargar, Mathias Schubert, Tina T. Salguero, Alexander A. Balandin
We demonstrate a unique class of advanced materials - quantum composites based on polymers with fillers comprised of a van der Waals quantum material that reveals multiple charge-density-wave quantum condensate phases. Materials that exhibit quantum phenomena are typically crystalline, pure, and have few defects because disorder destroys the coherence of the electrons and phonons, leading to collapses of the quantum states. We succeeded in preserving the macroscopic charge-density-wave phases of filler particles after multiple composite processing steps. The prepared composites manifest strong charge-density-wave phenomena even above room temperature. The dielectric constant experiences more than two orders of magnitude enhancement while the material maintains its electrically insulating properties, opening a venue for advanced applications in energy storage and electronics. The results present a conceptually different approach for engineering the properties of materials, extending the application domain for van der Waals materials.
Tuning near-gap electronic structure, interface charge transfer and visible light response of hybrid doped graphene and Ag3PO4 composite: Dopant effects
掺杂石墨烯（GR）/半导体纳米复合材料的增强的光催化性能最近被广泛观察到，但对其背后的潜在机制的理解仍然遥不可及。作为研究掺杂效应的模型体系，我们采用第一性原理计算研究了掺杂GR/Ag 3 PO 4纳米复合材料的电子结构和光学性质，结果表明掺杂剂可以调节GR/Ag 3 PO 4（100）复合材料的带隙、近带隙电子结构和界面电荷转移.有趣的是，掺杂原子和键合到掺杂剂上的C原子由于相互作用引起的电荷重新分布而带正电荷或负电荷，因此成为掺杂剂的活性位点。掺杂可以增强可见光吸收和光生电子转移。我们认为，N原子可能是GR/Ag 3 PO 4光催化剂的最佳掺杂。该工作可以合理化现有的实验结果，N掺杂GR-半导体复合材料，并丰富了我们的理解掺杂GR基复合材料中的掺杂剂的作用，开发高性能的光催化剂。
Interfacial Synergy in Ag-Doped CuO-AgCl-g-C3N4 Composites for Efficient Charge Separation and Low-power Methylene Blue Degradation
Indian Institute of Technology Indore（印度印多尔理工学院）；Heriot-Watt University（赫瑞-瓦特大学）；Ariel University（阿里埃勒大学）；King Fahd University of Petroleum and Minerals（法赫德国王石油与矿物大学）
State Key Laboratory of Metastable Materials Science and Technology & Hebei Key Laboratory of Microstructural Material Physics, School of Science, Yanshan University（燕山东亚大学理学院亚稳态材料科学与技术国家重点实验室与微观结构材料物理河北省重点实验室）
Tuning Electronic and Optical Properties of 2D/3D Construction based on Hybrid Perovskites through Interfacial Charge Transfer: Towards Higher Efficiency Solar Cells
Enhanced interfacial charge transfer by Z-scheme in defect-mediated ZnO-CdS nano-composite with rGO as a solid-state electron mediator for efficient photocatalytic applications
Lifetime-configurable soft robots via photodegradable silicone elastomer composites
Seoul National University（首尔大学）；UNIST (Ulsan National Institute of Science and Technology)（蔚山国立科学技术院）；Korea Institute of Science and Technology (KIST)（韩国科学技术研究院）；Korea University of Science and Technology（韩国科学技术院）；Sogang University（西江大学）
