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Topological wave phenomena in photonic time quasicrystals

Physical Review B 2025年第12期111卷 125421-125421页

作者： Xiang Ni Shixiong Yin Huanan Li Andrea Alù School of Physics Central South University Changsha 410083 China Photonics Initiative Advanced Science Research Center City University of New York New York New York 10031 USA Department of Electrical Engineering City College of The City University of New York New York 10031 USA MOE Key Laboratory of Weak-Light Nonlinear Photonics School of Physics Nankai University Tianjin 300071 China Physics Program Graduate Center City University of New York New York New York 10016 USA

Time interfaces consist of abrupt and spatially uniform changes in the optical properties of a medium. Their periodic occurrence forms photonic time crystals, which offer opportunities to tailor classical and quantum light-matter interactions. Here we explore one-dimensional photonic time quasicrystals, formed when time interfaces occur in a quasiperiodic fashion featuring long-range order. We unveil the emergence of topological phases and Hofstadter butterfly spectra in these systems, and demonstrate that their temporal response emulates the localization of topological edge states, enabling the temporal analog of topological Thouless pumping. Our findings open avenues for topological photonics leveraging time as a synthetic dimension, with functionalities that go beyond their spatial counterparts.

关键词： Quasicrystals

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Nanoslot-Induced Ultrastrong Phonon-Photon and Phonon-Phonon Coupling in Hybrid Organic-Inorganic Perovskites

Nanoslot-Induced Ultrastrong Phonon-Photon and Phonon-Phonon...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Dasom Kim Jin Hou Geon Lee Ayush Agrawal Sunghwan Kim Hao Zhang Di Bao Andrey Baydin Wenjing WU Fuyang Tay Shengxi Huang Daivd Hagenmüller Elbert E. M. Chia Dai-Sik Kim Minah Seo Aditya D. Mohite Junichiro Kono Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston TX USA Department of Electrical and Computer Engineering Rice University Houston TX USA Department of Materials Science and NanoEngineering Rice University Houston TX USA Sensor System Research Center Korea Institute of Science and Technology Seoul Republic of Korea Department of Physics and Astronomy Seoul National University Seoul Republic of Korea Department of Chemical and Biomolecular Engineering Rice University Houston TX USA Department of Physics Long-wavelength Nanotechnology Laboratory Quantum Photonics Institute Ulsan National Institute of Science and Technology (UNIST) Ulsan Republic of Korea Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore Smalley-Curl institute Rice University Houston TX USA CESQ-ISIS (UMR 7006) Universite de Strasbourg and CNRS Strasbourg France KU-KIST Graduate School of Converging Science and Technology Korea University Seoul Republic of Korea Department of Physics and Astronomy Rice University Houston TX USA

Methods for harnessing vibrational states are desired for phonon-based technologies. We realized ultrastrong coupling of two phonon modes in perovskite materials induced by ultrastrong coupling with a common photonic ... 详细信息

ISBN: (数字)9798350372076

ISBN: (纸本)9798350372083

关键词： Couplings Phonons Laser modes Perovskites Electro-optical waveguides Photonics

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Current situation and future perspectives for the use of fungi in the biomaterial industry and proposal for a new classification of fungal-derived materials

PeerJ Materials Science

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PeerJ Materials science 2023年 5卷 e31-e31页

作者： Sierra, Luz Alba Ballen Mendes-Pereira, Thairine García, Glen Jasper Yupanqui Werkhaizer, Carla Queiroga de Rezende, Juliana B. Rodrigues, Thiago Augusto Borges Badotti, Fernanda de Carvalho Cardoso, Emanuelle Santos da Costa, Andréa Miura Uetanabaro, Ana Paula Aguilar, Maria Teresa Góes-Neto, Aristóteles Department of Microbiology Universidade Federal de Minas Gerais MG Belo Horizonte Brazil Graduate Program in Bioinformatics Universidade Federal de Minas Gerais MG Belo Horizonte Brazil Graduate Program of Technological Innovation Universidade Federal de Minas Gerais MG Belo Horizonte Brazil Department of Chemistry Centro Federal de Educação Tecnológica de Minas Gerais MG Belo Horizonte Brazil Department of Biological Science Universidade Estadual de Santa Cruz BA Ilhéus Brazil School of Engineering Universidade Federal de Minas Gerais MG Belo Horizonte Brazil

The potential applications of fungi in the development of new biomaterials derived from fungal mycelium have captured the attention from both the scientific community and the society. The notable ability of mycelium networks to self-construct and aggregate can be used to produce diverse biomaterials. These biomaterials can be created in a pure state, or both in conjunction with other organic/inorganic compounds. Recent advancements in mycomaterials have gained attention due to their sustainability and mechanical, thermogravimetric, and compression properties. Such properties contribute to reducing the reliance on environmentally problematic substrates within the industry. After a standardized and comprehensive review of publications on mycomaterials across different fields, such as biology, health, agriculture, engineering, and material sciences, we detected that publications on this theme are utterly scattered. This critical review enabled us to also propose a novel classification system for these fungal-derived materials to help to structure and standardize this emerging transdisciplinary field of knowledge. Copyright 2023 Sierra et al.

关键词： Mycelium

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Shin et al. Reply:

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Physical Review Letters 2023年第5期131卷 059602-059602页

作者： Dongbin Shin Nicolas Tancogne-Dejean Jin Zhang Mahmut Sait Okyay Angel Rubio Noejung Park Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science Luruper Chaussee 149 22761 Hamburg Germany Department of Physics and Photon Science Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea Materials Science & Engineering Program Department of Chemical & Environmental Engineering Department of Physics & Astronomy and Department of Chemistry University of California-Riverside Riverside 92521 California USA Nano-Bio Spectroscopy Group Departamento de Fsica de Materiales Universidad del Pas Vasco 20018 San Sebastian Spain Center for Computational Quantum Physics (CCQ) The Flatiron Institute 162 Fifth avenue New York New York 10010 USA Department of Physics Ulsan National Institute of Science and Technology (UNIST) UNIST-gil 50 Ulsan 44919 Korea

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Assessment of factors influencing Indonesian residents’ intention to use a deposit–refund scheme for PET bottle waste

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Circular Economy 2023年第4期2卷

作者： Amirudin, Akhmad Inoue, Chihiro Grause, Guido International Environmental Leadership Program Environmental Studies for Advance Society Department Graduate School of Environmental Studies Tohoku University Aramaki Aza Aoba 6-6-20 Aoba-ku Sendai980-8579 Japan Department of Public Administration Faculty of Administrative Science Brawijaya University Malang65145 Indonesia School of Chemical Engineering University of Birmingham Edgbaston BirminghamB15 2TT United Kingdom

The collection rate is a difficult and important issue in the management of polyethylene terephthalate (PET) bottle waste, as it is related to the behavior of the community to participate and comply with the system established by the government. One system that has been shown to increase the collection rate of PET bottle waste is the deposit–refund scheme (DRS). We tested residents’ intention to participate in the DRS using the theory of planned behavior and complemented it with several important variables that could influence the model. The method used is partial least square-structural equation modeling. The result of the study is that all the variables studied were positively influenced according to their respective paths. Nevertheless, environmental awareness is the latent variable with the strongest positive effect on attitude, and attitude has the strongest positive effect on intention. Public information is the latent variable that positively influences all variables related to intention. The proposed model can be applied globally to identify factors that influence recycling participation, particularly for DRS, and help achieve sustainable development goals while initiating a circular economy by recycling plastic bottle waste. © 2023 The Author(s)

关键词： Developing countries

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Furfural hydrogenation into tetrahydrofurfuryl alcohol under ambient conditions: Role of Ni-supported catalysts and hydrogen source

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Industrial Crops and Products 2023年第1期195卷

作者： Matsagar, Babasaheb M. Li, Tsai-Ho Van Chi, Nguyen Hossain, Md. Shahriar A. Ahamad, Tansir Li, Yi-Pei Wu, Kevin C.-W. Department of Chemical Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei10617 Taiwan Faculty of Applied Technology School of Engineering and Technology Van Lang University 69/68 Dang Thuy Tram Binh Thanh District Ho Chi Minh City700000 Viet Nam The University of Queensland BrisbaneQLD4072 Australia Department of Chemistry College of Science King Saud University Saudi Arabia Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica No. 128 Sec. 2 Academia Road Taipei11529 Taiwan

Herein hydrogenation of biomass-derived furfural (FAL) catalyzed by Ni-supported catalysts and NaBH4 into tetrahydrofurfuryl alcohol (THFA) demonstrated in aqueous media under ambient reaction conditions. The activity of various Ni-supported catalysts (Ni/active carbon (Ni/AC);Ni/carbon black (Ni/CB);Ni/bone char (Ni/BC);Ni/C (derived from Ni-MOF)) compared for FAL hydrogenation. Ni/AC exhibited a high activity towards FAL hydrogenation into THFA (99% yield) compared to all other Ni-supported catalysts tested in this study. The results showed that hydrophobic nature of the AC support in Ni/AC, higher specific BET surface area, and smaller Ni particle size enhance the FAL hydrogenation proficiency towards THFA in aqueous media under milder reaction conditions. The FAL is efficiently hydrogenated with NaBH4 (hydrogen source). On the contrary, FAL is not hydrogenated in pure H2, suggesting a crucial role of NaBH4 in FAL hydrogenation. For the first time, the role of NaBH4 is investigated in detail for the hydrogenation of biomass-derived furans. The interaction of NaBO2 produced from NaBH4 with furfuryl alcohol (FOL) enhances the adsorption of the furan ring of FOL on the Ni surface via parallel geometry, resulting in efficient furan ring hydrogenation of FOL into THFA. © 2023 Elsevier B.V.

关键词： Biomass

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Evaluation of Physicothermal Properties of Solar Thermic Fluids Dispersed with Multiwalled Carbon Nanotubes and Prediction of Data Using Artificial Neural Networks

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Journal of Nanomaterials 2021年 2021卷

作者： Sekhar, K. Ch. Surakasi, Raviteja Garip, Ilhan Srujana, S. Kumar, V. V. Prasanna Begum, Naziya Department of Mechanical Lendi Institute of Engineering and Technology Vizianagaram Jonnada India Department of Electrical and Electronics Engineering Engineering and Architecture Faculty Nisantasi University Istanbul Turkey Department of Biotechnology Center for Post Graduate Studies Jain University Bengaluru India Department of Chemistry College of Natural and Computational Science Debre Berhan University Debre Berhan Ethiopia

A review of multiwalled carbon nanotubes as solar thermic fluids and their thermophysical properties is done in this article. The basic fluids were ethylene glycol and water in ratios of 100: 0, 90: 10, and 80: 20. To investigate how surface modification impacts thermophysical properties, three base fluids were combined with surfactant-assisted MWCNTs and oxidized MWCNTs in weight fractions of 0.125, 0.25, and 0.5 percent, respectively. It takes two months to check whether the dispersion stays constant. Thermal conductivity and viscosity measurement were done using heated discs and Anton Paar viscometers. Using oxidized MWCNTs to disperse, the base fluids increased thermal conductivity by 15% to 24%. Surfactant-assisted MWCNTs in nanofluids perform worse than oxidized MWCNTs. The dynamic viscosity of nanofluids is higher than that of basic fluids between 50 and 70°C. During a mathematical computation, all of the MWCNT weight fractions and ethylene glycol volume percentages are included. The correlation may be a good fit for the experimental data within limits. The characteristics are forecasted using feed-forward backpropagation. In this research, buried layer neurons and factors are examined. © 2021 K. Ch. Sekhar et al.

关键词： Multiwalled carbon nanotubes (MWCN)

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One pot synthesis of UiO-66-NH2 containing curcumin and cytotoxic evaluation toward liver cancer cells

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Materials Letters 2024年 365卷

作者： Susilowati, Oni Wahyu Lestari, Witri Handayani, Murni Sukowati, Caecilia Tiribelli, Claudio Crocè, Lory Saveria Masykur, Abu Rakhman Wibowo, Fajar Dwi Ardyanto, Tonang Adi Saputra, Ozi Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Central Java Surakarta57126 Indonesia Tangerang Selatan15314 Indonesia Jakarta Pusat10340 Indonesia Liver Cancer Unit Fondazione Italiana Fegato ONLUS AREA Science Park Basovizza34049 Italy Department of Medicine Surgery and Health Sciences University of Trieste Italy Clinical Pathology Department Faculty of Medicine Universitas Sebelas Maret Surakarta57126 Indonesia Department of Chemical Engineering College of Engineering National Taiwan University Taipei10617 Taiwan Institute of Chemistry and Taiwan International Graduate Program Sustainable Chemical Science and Technology Academia Sinica Taipei115 Taiwan

Curcumin, a potent natural compound known for its health benefits, encounters challenges such as low bioavailability and poor solubility. To overcome these obstacles, incorporating curcumin into metal–organic frameworks (MOFs) has emerged as a promising approach. This study explores the in-situ modification of UiO-66-NH2 (UiO stands for Universitetet i Oslo) with curcumin, aiming to assess its release and delivery potential. Chemical, structural, morphological, and textural analyses confirmed the successful synthesis of the materials. Nitrogen sorption isotherm, field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) revealed that curcumin addition led to decrease in surface area (from 829.6 m2/g to 679.92 m2/g) and porosity, as well as alterations in particle size (from 0.162 to 0.068 μm) and shape from octahedral to spherical. The release behavior of curcumin exhibited pH-dependent profiles, with cumulative releases (∼20 % at pH 4.8, and 30.56 % at pH 7.4) fitting Kosmeyer-Peppas model. Biological activity assays indicated non-toxicity, suggesting potential for curcumin delivery. © 2024

关键词： Bioactivity

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Reduction of interface defects in gate-recessed GaN HEMTs by neutral beam etching

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Materials Today Advances 2024年 23卷

作者： Yu, Chia Hao Chiang, Wei Hsiang Chen, Yi-Ho Samukawa, Seiji Wuu, Dong Sing Chung, Chin-Han Hsiao, Ching-Lien Horng, Ray Hua Institute of Electronics National Yang Ming Chiao Tung University Department of Materials Science and Engineering National Chung Hsing University Graduate Degree Program of College of Electrical and Computer Engineering National Yang Ming Chiao Tung University Institute of Comunications Engineering National Yang Ming Chiao Tung University Department of Applied Materials and Optoelectronic Engineering National Chi Nan University International College of Semiconductor Technology National Yang Ming Chiao Tung University Thin Film Physics Division Department of Physics Chemistry and Biology (IFM) Linköping University

This study investigates and compares the impact of different etching techniques on the fabrication of GaN high electron mobility transistors (HEMTs) between the inductively coupled plasma reactive ion etching (ICP-RIE) and the neutral beam etching (NBE) for the gate recess. By conducting direct current analysis, it was found that devices manufactured using the NBE exhibited superior electrical performance as compared with those produced using the ICP-RIE. These enhanced electrical characteristics include a transconductance of up to 100.4 mS/mm, a threshold voltage (V_th) of −2.3 V, an on/off current ratio of 1.1 × 10⁹, a subthreshold swing (S.S.) of 99.63 mV/dec, and a remarkably low gate leakage current. Additionally, we noted varying degrees of hysteresis in the I–V characteristics were related to process disparities possibly leading to interface defects. Multi-frequency capacitance-voltage (C–V) measurements were used to identify the interface defects at the oxide/AlGaN interface of the gate. The results revealed that devices fabricated using the NBE exhibited a lower interface defect density as compared with those fabricated using the ICP-RIE, thereby elucidating the reduced hysteresis observed in the I–V characteristics. These findings indicated the significant advantages of the NBE process in the fabrication of GaN HEMTs. © 2024 The Authors

关键词： GaN HEMTs Gate recess Interface defects Multi-frequency C–V Neutral beam etching

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Investigation of Cyanobacteria-Hosted Antibiotic Resistance Genes in Cyanohab-Impacted Drinking Water Sources

SSRN

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SSRN 2025年

作者： Volk, Abigail Mills, Molly Chae, Soryong Lee, Jiyoung Division of Environmental Health Sciences College of Public Health The Ohio State University ColumbusOH United States Environmental Sciences Graduate Program The Ohio State University ColumbusOH United States Department of Chemical and Environmental Engineering University of Cincinnati CincinnatiOH United States Department of Food Science and Technology The Ohio State University ColumbusOH United States Infectious Diseases Institute The Ohio State University ColumbusOH United States

Freshwater cyanobacterial blooms (cyanoHABs) produce cyanotoxins that cause human and animal illness. cyanoHABs are also hypothesized to play a role in the antibiotic resistome, but whether Cyanobacteria host clinically-relevant antibiotic resistant genes (ARGs) in the environment is largely unknown. To investigate this emerging issue, we looked for the presence of Cyanobacteria-hosted ARGs using shotgun metagenomic sequencing of drinking water source samples collected during the 2022 bloom season from Lake Erie and Grand Lake St. Marys (GLSM). . ARGs were annotated using DeepARG and Resistance Gene Identifier (RGI). Cyanobacteria were annotated to host genes conferring possible antibiotic resistance. Two of these genes were rpoB2 and arlR, but these genes were likely spurious hits on housekeeping genes. qac and OXA genes were also annotated. While those hits suggest potential resistance to clinical antibiotics, overall Cyanobacteria did not host appreciable clinically-relevant ARGs. Because the two drinking water sources historically have high cyanotoxin concentrations, selected cyanotoxins, Cyanobacteria, and ARGs were chosen for quantification. We found high levels of Microcystis in Lake Erie and Planktothrix in GLSM, and high microcystin concentrations in GLSM, supporting previous trends in these water bodies. This study takes a novel approach pairing the issues of cyanoHABs and ARGs together in two drinking water sources. In a changing climate, drinking water treatment strategies should consider the treatment and public health implications of multiple contaminants. © 2025, The Authors. All rights reserved.

关键词： Lakes

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