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arXiv 2024年

作者： Samaha, Anna-Christina Doumani, Jacques Kritzell, T. Elijah Xu, Hongjing Baydin, Andrey Ajayan, Pulickel M. Tahchi, Mario El Kono, Junichiro Laboratory of Biomaterials and Intelligent Materials Department of Physics Faculty of Sciences 2 Lebanese University P.O. Box 90656 Jdeidet Lebanon Department of Electrical and Computer Engineering Rice University 6100 Main Street HoustonTX77005 United States Applied Physics Graduate Program Smalley–Curl Institute Rice University 6100 Main Street HoustonTX77005 United States Department of Physics and Astronomy Rice University 6100 Main Street HoustonTX77005 United States Smalley–Curl Institute Rice University 6100 Main Street HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University 6100 Main Street HoustonTX77005 United States Carbon Hub Rice University 6100 Main Street HoustonTX77005 United States

Graphene-based terahertz (THz) devices have emerged as promising platforms for a variety of applications, leveraging graphene’s unique optoelectronic properties. This review explores recent advancements in utilizing graphene in THz technology, focusing on two main aspects: THz molecular sensing and THz wave modulation. In molecular sensing, the environment-sensitive THz transmission and emission properties of graphene are utilized for enabling molecular adsorption detection and biomolecular sensing. This capability holds significant potential, from the detection of pesticides to DNA at high sensitivity and selectivity. In THz wave modulation, crucial for next-generation wireless communication systems, graphene demonstrates remarkable potential in absorption modulation when gated. Novel device structures, spectroscopic systems, and metasurface architectures have enabled enhanced absorption and wave modulation. Furthermore, techniques such as spatial phase modulation and polarization manipulation have been explored. From sensing to communication, graphene-based THz devices present a wide array of opportunities for future research and development. Finally, advancements in sensing techniques not only enhance biomolecular analysis but also contribute to optimizing graphene’s properties for communication by enabling efficient modulation of electromagnetic waves. Conversely, developments in communication strategies inform and enhance sensing capabilities, establishing a mutually beneficial relationship. © 2024, CC BY.

关键词： Graphene

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Frontispiece: Visible-Light-Driven Solid-State Fluorescent Photoswitches for High-Level Information Encryption

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Angewandte Chemie International Edition 2024年第51期63卷

作者： Zhiyuan Han Prof. Meixia He Prof. Gang Wang Prof. Jean-Marie Lehn Prof. Quan Li Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast University Nanjing 211189 China School of Chemical Engineering Xi'an University Xi'an 710065 China Laboratoire de Chimie Supramoléculaire Institut de Science et d'Ingénierie Supramoléculaires (lSlS) Université de Strasbourg 8 allée Gaspard Monge Strasbourg 67000 France Materials Science Graduate Program Kent State University Kent OH 44242 USA

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Development of novel iron and copper-loaded mesoporous silica particles with exceptional visible-light-induced photocatalytic properties for ultra-fast removal of organic pollutants from wastewater

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Journal of Water Process engineering 2025年 75卷

作者： Aatif Ijaz Kubilay Sahin Musa Dirak M. Baris Yagci Safacan Kolemen A. Levent Demirel Annamaria Miko Department of Chemistry Koç University Istanbul 34450 Türkiye Institute of Surface Science Helmholtz-Zentrum Hereon Max-Planck Straße 1 21502 Geesthacht Germany Materials Science & Engineering Graduate Program Koç University Istanbul 34450 Türkiye Research Centre for Manufacturing and Materials Functional Materials and Chemistry Research Group Coventry University Beresford Ave Coventry CV6 5LZ UK Chemistry Graduate Program Koç University Istanbul 34450 Türkiye Koç University Surface Science and Technology Center (KUYTAM) Istanbul 34450 Türkiye Semilab Co. Ltd. Surface and Interface Department Prielle Kornélia u. 2 1117 Budapest Hungary

Developing robust and highly efficient photocatalysts with the benefits of delayed electron-hole recombination generating active radicals and better catalytic efficiency in natural sunlight is an imperative task. Herein, photocatalytic Fe 3+ /Fe 2+ /Fe 2 O 3 and Cu 2+ /CuO containing mesoporous spherical silica particles (MSP) were prepared using a facile one-pot synthesis method for the photodegradation of actual textile wastewater under sunlight. Our one-pot room temperature synthesis produced photocatalytic particles with a degradation reaction rate 65 times higher than pure Fe 2 O 3 nanoparticles. Chemical and structural analysis confirmed the successful incorporation of Fe 3+ /Fe 2+ /Fe 2 O 3 , and Cu 2+ /CuO inside the silica framework. MSP carrying copper and iron species (Fe/MSP and Cu/MSP, respectively) demonstrated highly stable catalytic degradation of methylene blue in the presence of H 2 O 2 under visible light irradiation with a photodegradation efficiency of ≥99.9 % after 20 and 10 min, respectively. This excellent photocatalytic performance is attributed to their ability to enhance the formation of both chemically generated and photogenerated hydroxyl radicals resulting from prolonged electron-hole recombination. Fe/MSP were successfully used in the complete photodegradation of real textile wastewater containing various dye molecules, demonstrating practical applicability. Furthermore, these photocatalytic materials showed good stability and recyclability for up to 5 cycles while maintaining their excellent photocatalytic ability. Cu/MSP and Fe/MSP are expected to be promising, cost-effective photocatalysts for efficiently degrading various organic dyes, pesticides, and antibiotic pollutants.

关键词： Cu2+/CuO-SiO2 Fe3+/Fe2+/Fe2O3-SiO2 Fenton reactions Organic pollutants Photocatalytic degradation Reusability Textile wastewater treatment

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Multimode Ultrastrong Coupling in Three-Dimensional Photonic-Crystal Cavities

arXiv

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arXiv 2023年

作者： Tay, Fuyang Mojibpour, Ali Sanders, Stephen Liang, Shuang Xu, Hongjing Gardner, Geoff C. Baydin, Andrey Manfra, Michael J. Alabastri, Alessandro Hagenmüller, David Kono, Junichiro Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley–Curl Institute Rice University HoustonTX77005 United States Department of Physics and Astronomy Purdue University West LafayetteIN47907 United States Birck Nanotechnology Center Purdue University West LafayetteIN47907 United States Department of Physics and Astronomy Rice University HoustonTX77005 United States School of Electrical and Computer Engineering Purdue University West LafayetteIN47907 United States Smalley–Curl Institute Rice University HoustonTX77005 United States School of Materials Engineering Purdue University West LafayetteIN47907 United States Université de Strasbourg CNRS Strasbourg67000 France Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States

Recent theoretical studies have highlighted the role of spatially varying cavity electromagnetic fields in exploring novel cavity quantum electrodynamics (cQED) phenomena, such as the potential realization of the elusive Dicke superradiant phase transition. One-dimensional photonic-crystal cavities (PCCs), widely used for studying solid-state cQED systems, have uniform spatial profiles in the lateral plane. Three-dimensional (3D) PCCs, which exhibit discrete in-plane translational symmetry, overcome this limitation, but fabrication challenges have hindered the achievement of strong coupling in 3D-PCCs. Here, we report the realization of multimode ultrastrong coupling in a 3D-PCC at terahertz frequencies. The multimode coupling between the 3D-PCC’s cavity modes and the cyclotron resonance of a Landau-quantized two-dimensional electron gas in GaAs is significantly influenced by the spatial profiles of the cavity modes, leading to distinct coupling scenarios depending on the probe polarization. Our experimental results are in excellent agreement with a multimode extended Hopfield model that accounts for the spatial inhomogeneity of the cavity field. Guided by the model, we discuss the possible strong ground-state correlations between different cavity modes and introduce relevant figures of merit for the multimode ultrastrong coupling regime. Our findings emphasize the importance of spatially nonuniform cavity mode profiles in probing nonintuitive quantum phenomena expected for the ground states of cQED systems in the ultrastrong coupling regime. Copyright © 2023, The Authors. All rights reserved.

关键词： Electron cyclotron resonance

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Microfluidic nanodevices for drug sensing and screening applications

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Biosensors and Bioelectronics 2023年 219卷 114783页

作者： Pal, Arnab Kaswan, Kuldeep Barman, Snigdha Roy Lin, Yu-Zih Chung, Jun-Hsuan Sharma, Manish Kumar Liu, Kuei-Lin Chen, Bo-Huan Wu, Chih-Cheng Lee, Sangmin Choi, Dongwhi Lin, Zong-Hong Institute of Biomedical Engineering National Tsing Hua University Hsinchu30013 Taiwan International Intercollegiate PhD Program National Tsing Hua University Hsinchu30013 Taiwan Department of Power Mechanical Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Materials Science and Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Chemistry National Tsing Hua University Hsinchu30013 Taiwan Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu30013 Taiwan Department of Gastroenterology and Hepatology Chang Gung Memorial Hospital Linkou Medical Center Taoyuan333 Taiwan Center of Quality Management National Taiwan University Hospital Hsinchu Branch Hsinchu30059 Taiwan College of Medicine National Taiwan University Taipei10051 Taiwan Institute of Cellular and System Medicine National Health Research Institute Zhunan 35053 Taiwan School of Mechanical Engineering Chung-Ang University Seoul06974 Korea Republic of Kyung Hee University Gyeonggi 17104 Korea Republic of

The outbreak of pandemics (e.g., severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 in 2019), influenza A viruses (H1N1 in 2009), etc.), and worldwide spike in the aging population have created unprecedented urgency for developing new drugs to improve disease treatment. As a result, extensive efforts have been made to design novel techniques for efficient drug monitoring and screening, which form the backbone of drug development. Compared to traditional techniques, microfluidics-based platforms have emerged as promising alternatives for high-throughput drug screening due to their inherent miniaturization characteristics, low sample consumption, integration, and compatibility with diverse analytical strategies. Moreover, the microfluidic-based models utilizing human cells to produce in-vitro biomimetics of the human body pave new ways to predict more accurate drug effects in humans. This review provides a comprehensive summary of different microfluidics-based drug sensing and screening strategies and briefly discusses their advantages. Most importantly, an in-depth outlook of the commonly used detection techniques integrated with microfluidic chips for highly sensitive drug screening is provided. Then, the influence of critical parameters such as sensing materials and microfluidic platform geometries on screening performance is summarized. This review also outlines the recent applications of microfluidic approaches for screening therapeutic and illicit drugs. Moreover, the current challenges and the future perspective of this research field is elaborately highlighted, which we believe will contribute immensely towards significant achievements in all aspects of drug development. © 2022 Elsevier B.V.

关键词： Microfluidics

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Denaturation methods for reusable magnetic biosensors

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Lab on a chip 2025年 2025 May 29页

作者： Suhyeon Park Songeun Kim Shan X Wang Jung-Rok Lee Department of Mechanical and Biomedical Engineering Ewha Womans University Seoul 03760 Republic of Korea. Graduate Program in Smart Factory Ewha Womans University Seoul 03760 Republic of Korea. jungrok@ewha.ac.kr. Department of Materials Science and Engineering Stanford University Stanford California 94305 USA. Department of Electrical Engineering Stanford University Stanford California 94305 USA.

Nanoscale biosensors for sensitive DNA detection require advanced and precise fabrication techniques, which make them highly expensive and result in low yield rates. For such DNA biosensors, sensor regeneration is highly desirable. In this study, we investigated the effectiveness of various denaturants, including ultrapure water, urea solution, tris-ethylenediaminetetraacetic acid buffer, and dimethyl sulfoxide (DMSO), for the denaturation of target DNAs hybridized to probe DNAs on sensors. We used giant magnetoresistive (GMR) biosensors equipped with a temperature control unit in conjunction with magnetic nanoparticles. To examine the effect of DNA sequence on denaturation efficiency, 14 orthogonal DNA pairs were designed and tested. Furthermore, to maintain a consistent sensitivity in subsequent measurements, we evaluated the integrity of the probe DNAs on the sensors after denaturation. Among all the denaturants tested, 40% DMSO demonstrated excellent performance in the denaturation of probe DNAs covalently bonded to the sensors, without any heating process. This optimal denaturant can be applied to other planar DNA biosensor systems; moreover, GMR biosensors can facilitate the evaluation of newly developed denaturants.

关键词： Magnetic nanoparticles

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Corrigendum to "Extracellular vesicles from human adipose-derived stem cell spheroids: Characterization and therapeutic implications in diabetic wound healing" [Mater. Today Bio Volume 29, December 2024, 101333](S2590006424003946)(10.1016/***.2024.101333)

Materials Today Bio

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materials Today Bio 2025年 32卷

作者： Quiñones, Edgar Daniel Wang, Mu-Hui Liu, Kuan-Ting Lu, Ting-Yu Lan, Guan-Yu Lin, Yu-Ting Chen, Yu-Liang Shen, Tang-Long Wu, Pei-Hsun Hsiao, Yu-Sheng Chuang, Er-Yuan Yu, Jiashing Cheng, Nai-Chen Taiwan International Graduate Program Sustainable Chemical Science & Technology Academia Sinica Institute of Chemistry Taipei115 Taiwan Department of Surgery National Taiwan University Hospital and College of Medicine Taipei100 Taiwan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Program in Materials Science and Engineering University of California San Diego CA92093 United States Department of Plant Pathology & Microbiology National Taiwan University Taiwan Johns Hopkins Institute for NanoBioTechnology John Hopkins University Baltimore MD21218 United States Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei106 Taiwan School of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Research Center for Developmental Biology and Regenerative Medicine National Taiwan University Taipei Taiwan

The authors regret that the selected Figure 2A, depicting cell sheets and spheroids, was previously published in Stem Cell Research & Therapy (2022;13:276. https://***/10.1186/s13287-022-02948-3). This duplication was an unintentional oversight, as the image was included solely for illustrative purposes and does not contribute to any quantitative analysis. We sincerely apologize for this mistake and propose the following corrections: 1. Replacing Figure 2A with a new image as below that does not overlap with our previously published work.2. Including a correction statement clarifying that the image serves only an illustrative function and does not affect the study's quantitative ***, we have identified an error in Section 3.3 of the text, where "SEM" should be corrected to "TEM." We appreciate your consideration of these revisions and apologize for any confusion caused. The authors would like to apologize for any inconvenience caused. Your sincerely, Jiashing Yu and Nai-Chen Cheng Fixed Figure 2A[Figure presented] © 2025 The Author(s)

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Enhancement of Self-Trapped Exciton and Near-Infrared Emission in Bi3+/Er3+ Co-Doped Cs2Ag0.4Na0.6InCl6 Double Perovskite for Optical Telecommunications

SSRN

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SSRN 2022年

作者： Dave, Kashyap Huang, Wen-Tse Leśniewski, Tadeusz Lazarowska, Agata Grzegorczyk, Maciej Mahlik, Sebastian Leniec, Grzegorz Kaczmarek, Slawomir M. Liu, Ru-Shi Department of Chemistry National Taiwan University Taipei106 Taiwan Nanoscience and Technology Program Taiwan International Graduate Program Academia Sinica National Taiwan University Taipei115 Taiwan Institute of Experimental Physics Faculty of Mathematics Physics and Informatics University of Gdańsk Gdańsk80-308 Poland Department of Technical Physics Faculty of Mechanical Engineering and Mechatronics West Pomeranian University of Technology in Szczecin Piastow 48 Szczecin70-311 Poland Advanced Research Center of Green Materials Science and Technology National Taiwan University Taipei106 Taiwan

Erbium (Er) complexes are used as optical gain material for signal generation in the telecom C-band at 1540 nm, but they need a sensitizer to enhance absorption. Na+ substitution at Ag+ and Bi3+ doping at the In3+ site are possible strategies to enhance broadband emission in Cs2AgInCl6, which could be used as sensitizers to energy transfer into rare-earth elements. Herein, self-trapped exciton (STE) energy transfer to Er3+ at 1540 nm for low loss optical telecommunication applications is reported. An acid precipitation method is used to synthesize Cs2AgInCl6 and its derivative with Er3+, Bi3+, and Na+. Bare Cs2AgInCl6:Er emission signals are found to be weak at 1540 nm, but Bi3+ doping increased by 12 times, and Bi3+ and Na+ doping increased by up to 25 times signal intensity. Electron paramagnetic resonance spectroscopy characterized a decrease in axial symmetry over the Er3+ ion after substitutions of Na+ and Bi3+ in Cs2AgInCl6 at low temperature ( © 2022, The Authors. All rights reserved.

关键词： Bismuth compounds

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Outcoupling Hyperbolic Modes from Aligned Carbon Nanotube Films

Outcoupling Hyperbolic Modes from Aligned Carbon Nanotube Fi...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Bryant Jerome Ciril S. Prasad Jacques Doumani Oliver S. Dewey Andrey Baydin Matteo Pasquali Junichiro Kono Weilu Gao Alessandro Alabastri Gururaj V. Naik Department of Electrical and Computer Engineering Rice University Houston TX USA Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston TX USA Department of Chemical and Biomolecular Engineering Rice University Houston TX USA Smalley-Curl Institute Rice University Houston TX USA Department of Chemistry Rice University Houston TX USA Department of Materials Science and NanoEngineering Rice University Houston TX USA Department of Physics and Astronomy Rice University Houston TX USA Department of Electrical and Computer Engineering University of Utah Salt Lake City UT USA

Aligned carbon nanotube films make an excellent hyperbolic material plat-form in the infrared. Here, we experimentally demonstrate the presence of high-k modes in aligned carbon nanotube films and outcouple them to fr... 详细信息

ISBN: (数字)9781957171050

ISBN: (纸本)9781665466660

关键词： Films Carbon nanotubes Lasers and electrooptics Laser modes High-k dielectric materials Gratings Laser applications

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Ferroelectric transistors based on shear-transformation-mediated rhombohedral-stacked molybdenum disulfide

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Nature Electronics 2024年第1期7卷 29-38页

作者： Yang, Tilo H. Liang, Bor-Wei Hu, Hsiang-Chi Chen, Fu-Xiang Ho, Sheng-Zhu Chang, Wen-Hao Yang, Liu Lo, Han-Chieh Kuo, Tzu-Hao Chen, Jyun-Hong Lin, Po-Yen Simbulan, Kristan Bryan Luo, Zhao-Feng Chang, Alice Chinghsuan Kuo, Yi-Hao Ku, Yu-Seng Chen, Yi-Cheng Huang, You-Jia Chang, Yu-Chen Chiang, Yu-Fan Lu, Ting-Hua Lee, Min-Hung Li, Kai-Shin Wu, Menghao Chen, Yi-Chun Lin, Chun-Liang Lan, Yann-Wen Department of Physics National Taiwan Normal University Taipei Taiwan Taiwan Semiconductor Research Institute National Applied Research Laboratories Hsinchu Taiwan Department of Electrophysics National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Physics National Cheng Kung University Tainan Taiwan School of Physics Huazhong University of Science and Technology Wuhan China Institute of Cellular and Organismic Biology Academia Sinica Taipei Taiwan Department of Mathematics and Physics University of Santo Tomas Manila Philippines Program for Semiconductor Devices Materials and Hetero-integration Graduate School of Advanced Technology National Taiwan University Taipei Taiwan Hsinchu Taiwan Department of Physics National Taiwan University Taipei Taiwan Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology CambridgeMA United States

To develop low-power, non-volatile computing-in-memory device using ferroelectric transistor technologies, ferroelectric channel materials with scaled thicknesses are required. Two-dimensional semiconductors, such as molybdenum disulfide (MoS2), equipped with sliding ferroelectricity could provide an answer. However, achieving switchable electric polarization in epitaxial MoS2 remains challenging due to the absence of mobile domain boundaries. Here we show that polarity-switchable epitaxial rhombohedral-stacked (3R) MoS2 can be used as a ferroelectric channel in ferroelectric memory transistors. We show that a shear transformation can spontaneously occur in 3R MoS2 epilayers, producing heterostructures with stable ferroelectric domains embedded in a highly dislocated and unstable non-ferroelectric matrix. This diffusionless phase transformation process produces mobile screw dislocations that enable collective polarity control of 3R MoS2 via an electric field. Polarization–electric-field measurements reveal a switching field of 0.036 V nm−1 for shear-transformed 3R MoS2. Our sliding ferroelectric transistors are non-volatile memory units with thicknesses of only two atomic layers and exhibit an average memory window of 7 V with an applied voltage of 10 V, retention times greater than 104 seconds and endurance greater than 104 cycles. © 2023, The Author(s), under exclusive licence to Springer Nature Limited.

关键词： Molybdenum disulfide

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