检索结果-内蒙古大学图书馆

Rational effect of CuSe2phase with octadecyl amine modified reduced graphene composite for dual-mode sensing of environmental hazardous anthelminthic drug in aquatic and biological samples

引用

Journal of Environmental Chemical Engineering 2023年第1期11卷

作者： Hwa, Kuo-Yuan Ganguly, Anindita Santhan, Aravindan Department of Molecular Science and Engineering National Taipei University of Technology Taipei Taiwan International Graduate Program in Energy and Optoelectronic Materials National Taipei University of Technology Taipei Taiwan

The increasing usage of antihelminthic drug mebendazole (MEB) in humans and livestock poses serious threat and is considered a significant environmental pollutant. Hence, monitoring the MEB residues in environmental samples, and human fluids is essential to decrease the ecological risk and improve the health of humans. In this work, copper selenide (CuSe2) nano/microspheres were hydrothermally synthesized and ultrasonically treated with rGO surface modified with ODA alkyl amine (rGO-ODA). The optical, structural, morphological, and functional analysis were performed which revealed the CuSe2 in marcasite phase, orthorhombic pattern with Pnnm space group, and substantial composite formation. The morphological studies revealed sphere structure of the CuSe2 and wrinkled sheets of rGO-ODA. A sensor that detects MEB using the cyclic voltammetry (CV), differential pulse voltammetry (DPV) and UV-Vis absorbance techniques was developed. For DPV analysis, the sensor exhibited a very low value for limit of detection 13.55 nM and a sensitivity of 9.4871 μA M-1cm-2. For UV-Vis, the sensor demonstrated a very low limit of detection 22.3 nM. The use of this sensor was validated in real-time analysis with aquatic and biological real samples. The results suggested > 90% of analyte recovery and enhanced efficiency for MEB detection with a potential for commercialization in future. © 2022 Elsevier Ltd.

关键词： Copper compounds

来源：评论

学校读者我要写书评

暂无评论

New type of frequency standard transitions realized by comb laser

New type of frequency standard transitions realized by comb ...

引用

CLEO: science and Innovations, S and I 2022

作者： Chen, Bo-Wei Liu, Tze-Wei Yu, Hsin-Hung Cheng, Wang-Yau Department of Physics National Central University Taoyuan32001 Taiwan Molecular Sciences and Technology Taiwan International Graduate Program Academia Sinica National Central University Taipei Taiwan Institute of Atomic and Molecular Science Academia Sinica Taipei11529 Taiwan

The clock transitions recommended by BIPM are never realized by a femtosecond comb laser. In this report, we recommend two comb-laser-based stepwise transitions resolved simultaneously from rubidium and cesium atom. &... 详细信息

ISBN: (纸本)9781557528209

关键词： Frequency standards

来源：评论

学校读者我要写书评

暂无评论

Effective monitoring of environmental hazardous drug moxifloxacin hydrochloride using silver selenide on octadecyl amine modified reduced graphene oxide composite

引用

Journal of Environmental Chemical Engineering 2024年第1期12卷

作者： Hwa, Kuo-Yuan Ganguly, Anindita Graduate Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei China Department of Molecular Science and Engineering National Taipei University of Technology Taipei China International Graduate Program in Energy and Optoelectronic Materials National Taipei University of Technology China

The precise detection of antibiotics is very critical. Here, silver selenide (Ag2Se) nanorods are hydrothermally synthesized and ultrasonically treated with rGO surface modified with octadecylamine (rGO-ODA). The optical, structural, morphological, and functional analysis were performed which revealed the orthorhombic pattern of the P2221 E space group, the crystalline purity of Ag2Se, and the substantial composite formation. The morphological studies revealed nanorod like structure of the Ag2Se material and wrinkled sheets of rGO-ODA. A sensor that detects moxifloxacin hydrochloride (MOXH) antibiotic using the cyclic voltammetry (CV), differential pulse voltammetry (DPV) and UV-Vis absorbance was developed. For DPV analysis, a quite low value for detection limit 12.46 nM was exhibited with 0.199 μM – 425.16 μM linear range, and a sensitivity of 5.0439 μA M−1cm−2. For UV-Vis, the sensor demonstrated a very low limit of detection 17.42 nM over 0.12 μM – 7.7 μM working range. The use of this sensor was validated in real-time analysis with industrial waste water, fish, human blood, and urine samples. The results suggested an excellent rate of analyte recovery and enhanced efficiency for MOXH detection with a potential for commercialization in the future. © 2023

关键词： Nanorods

来源：评论

学校读者我要写书评

暂无评论

Structure-Guided Discovery of PD-1/PD-L1 Interaction Inhibitors: Peptide Design, Screening, and Optimization via Computation-Aided Phage Display Engineering

引用

Journal of Chemical Information and Modeling 2024年第5期64卷 1615-1627页

作者： Tseng, Tien-Sheng Lee, Chao-Chang Chen, Po-Juei Lin, Chiu-Yuen Chen, Wang-Chuan Lee, Yu-Ching Lin, Jiun-Han Chen, Kaun-Wen Tsai, Keng-Chang Institute of Molecular Biology National Chung Hsing University Taichung40202 Taiwan National Research Institute of Chinese Medicine Ministry of Health and Welfare Taipei11221 Taiwan The School of Chinese Medicine for Post Baccalaureate I-Shou University Kaohsiung824005 Taiwan Department of Chinese Medicine E-Da Hospital Kaohsiung824005 Taiwan TMU Research Center of Cancer Translational Medicine Taipei Medical University Taipei11031 Taiwan Ph.D. Program in Medical Biotechnology College of Medical Science and Technology Taipei Medical University Taipei11031 Taiwan Department of Industrial Technology Ministry of Economic Affairs Taipei100210 Taiwan Food Industry Research and Development Institute Hsinchu30062 Taiwan Molecular Science and Digital Innovation Center Genetics Generation Advancement Corporation Taipei11949 Taiwan

Cancer immunotherapy harnesses the immune system to combat tumors and has emerged as a major cancer treatment modality. The PD-1/PD-L1 immune checkpoint modulates interactions between tumor cells and T cells and has been extensively targeted in cancer immunotherapy. However, the monoclonal antibodies known to target this immune checkpoint have considerable side effects, and novel PD-1/PD-L1 inhibitors are therefore required. Herein, a peptide inhibitor to disrupt PD-1/PD-L1 interactions was designed through structure-driven phage display engineering coupled to computational modification and optimization. BetaPb, a novel peptide library constructed by using the known structure of PD-1/PD-L, was used to develop inhibitors against the immune checkpoint, and specific peptides with high affinity toward PD-1 were screened through enzyme-linked immunosorbent assays, homogeneous time-resolved fluorescence, and biolayer interferometry. A potential inhibitor, B8, was preliminarily screened through biopanning. The binding affinity of B8 toward PD-1 was confirmed through computation-aided optimization. Assessment of B8 variants (B8.1, B8.2, B8.3, B8.4, and B8.5) demonstrated their attenuation of PD-1/PD-L1 interactions. B8.4 exhibited the strongest attenuation efficiency at a half-maximal effective concentration of 0.1 μM and the strongest binding affinity to PD-1 (equilibrium dissociation constant = 0.1 μM). B8.4 outperformed the known PD-1/PD-L1 interaction inhibitor PL120131 in disrupting PD-1/PD-L1 interactions, revealing that B8.4 has remarkable potential for modification to yield an antitumor agent. This study provides valuable information for the future development of peptide-based drugs, therapeutics, and immunotherapies for cancer. © 2024 American Chemical Society.

关键词： Peptides

来源：评论

学校读者我要写书评

暂无评论

SiC structural characterization by non destructive near-field microscopy techniques

SiC structural characterization by non destructive near-fiel...

引用

2022 International Semiconductor Conference, CAS 2022

作者： Wu, Kuan-Ting Vuillermet, Enora Usureau, Elise El-Helou, Youssef Kazan, Michel Woon, Wei-Yen Lazar, Mihai Bruyant, Aurelien Light Nanomaterials and Nanotechnologies Cnrs Emr 7004 University of Technology of Troyes Troyes10004 France Department of Physics National Central University Taoyuan32001 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Institute of Atomic and Molecular Science Academia Sinica Taipei10617 Taiwan Department of Physics American University of Beirut P.O. Box 11-0236 Riad El-Solh Beirut1107-2020 Lebanon

ISBN: (数字)9781665452557

ISBN: (纸本)9781665452557

SiC sputtered and e-beam evaporated layers have been deposited on 4H-SiC substrates. Recrystallization has been tried by high temperature annealing with two plateaus at 1400°C and 1700°C. The crystallinity was systematically investigated by non destructive near-field microscopy techniques, particularly adapted to the thin thickness of our layers. Good recrystallization is confirmed only on the e-beam evaporated layers and after the higher annealing plateau by preserving 4H substrate polytype. © 2022 IEEE.

关键词： Silicon carbide

来源：评论

学校读者我要写书评

暂无评论

Microfractures in TiO2Enhance the Photoelectrochemical Properties of Photosystem i Bio-Sensitized Solar Cells 5

Microfractures in TiO2Enhance the Photoelectrochemical Prope...

引用

5th IEEE International Conference on BioInspired Processing, BIP 2023

作者： Flores, Sebastian Castro Araya, Christopher Espinoza Segura, Fabricio Chaverri Pineda, Leslie W. Bruce, Barry D. Villarreal, Claudia C. Cartago Costa Rica Maestria Ingenieria en Dispositivos Medicos Cartago Costa Rica San Jose Costa Rica University of Tennessee Department of Biochemistry Cellular and Molecular Biology Program in Genome Science and Technology KnoxvilleTN United States San Jose Costa Rica

ISBN: (纸本)9798350330052

Climate change, caused by the increasing energy demand from fossil fuels due to population growth and economic expansion, triggers the need for clean, renewable, and sustainable energy sources. The solar energy contributes to approximately 99.9% of the Earth's energy. Therefore, photovoltaic technology is considered a possible substitute for fossil fuels owing to its abundance, but the current silicon and thin film photovoltaic (PV) technologies generate greenhouse gas emissions (GHE) during manufacturing and use scarce and polluting materials. Bio-sensitized solar cells (BSSCs) offer a promising solution using simple, lower energy-demand manufacturing processes and abundant, non-toxic materials. BSSCs are derived from dye-sensitized solar cells (DSSCs) technology by replacing the synthetic dye with biological molecules, such as photosystem I (PSI), into a thin film device. We report a BSSC using PSI as a sensitizer, TiO2 as a wide-bandgap semiconductor, Co-bipyridine compound as a redox mediator in the electrolyte, and PEDOT-CNT composite as the counter electrode. This study investigates how microfractures on the TiO2 thin film induced during thermal sintering affect the photoelectrochemical performance of the BSSCs. Electrochemical characterization of the PSI-BSSCs was performed under a solar simulator using linear sweep voltammetry (LSV), open-circuit voltage decay (OCVD), chronoamperometry, and electrochemical impedance spectroscopy (EIS). SEM micrographs reveal fissures in the photoanode surface induced by the fast heating and cooling during thermal treatments. Surprisingly, the microfractures improved the performance of the solar cells and will be discussed regarding the accessibility of PSI and the mediator to penetrate the nanostructured electrode and enhance the photocurrents generated. The BSSCs improvement due to the microfractures is ascribed to the enabled diffusion of the PSI sensitizer through the nanoporous TiO2, given the significantly larger size o

关键词： bio-sensitized solar cell microfractures photosystem I surface area TiO2 photoanodes

来源：评论

学校读者我要写书评

暂无评论

Strongly Confined Atomic Excitation Localization in a Weakly-Driven Atom-Waveguide Interface

arXiv

引用

arXiv 2024年

作者： Chung, Shao-Hung Chen, Wei Jen, H.H. Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Department of Physics Center for Quantum Science and Engineering National Taiwan University Taipei10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan

An atomic array coupled to a photonic crystal waveguide forms a strongly coupled quantum interface, exhibiting various intriguing collective features of quantum dynamics. Here we consider a homogeneous atomic array and theoretically investigate its steady-state distribution when the incident fields drive the atoms from both sides at asymmetric angles. This effectively creates an interface shared by two zones of atoms under different driving angles. This setup introduces a competition between photon-mediated dipole-dipole interactions and the directionality of coupling, while differences of the travelling phases from the incident angles further influence the overall steady-state behavior. Under this asymmetric driving scheme, the presence of strongly confined localization can be identified, where localization can occur either at the interface or at one of edges. Additionally, we examine the size effect on the atomic localization, deriving an empirical formula to predict parameter regimes that favor interfaced localization. We also consider a defect-driving scheme, where a third zone is created by undriven atoms under symmetric travelling phases. This results in strongly confined single-site excitation localization, which can be explained through analytical solutions under the reciprocal coupling. Finally, we propose several methods for precise control of multiple single-site localizations under the defect-driving scheme. Our results provide insights into driven-dissipative quantum systems with nonreciprocal couplings and pave the way for quantum simulation of exotic many-body states relevant to quantum information applications. Copyright © 2024, The Authors. All rights reserved.

关键词： Photonic crystals

来源：评论

学校读者我要写书评

暂无评论

Trapped-atom Otto engine with light-induced dipole-dipole interactions

arXiv

引用

arXiv 2024年

作者： Feyisa, Chimdessa Gashu Jen, H.H. Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan Department of Physics National Central University Taoyuan320317 Taiwan

Finite-time quantum heat engines are of practical relevance as they can generate finite-power, distinguishing them from ideal quasistatic engines typically used for theoretical purposes. However, these engines encounter energy losses due to quantum friction, which is particularly pronounced in many-body systems with non-trivial coherences in their density operator. Strategies such as shortcuts to adiabaticity and fast routes to thermalization have been developed although the associated cost requirements remain uncertain. In this study, we theoretically investigate the finite-time operation of a trapped-atom Otto engine with light-induced dipole-dipole interactions and projection measurements in one of the isochoric processes. The investigation reveals that appropriate control of dipole-dipole interactions of the working medium prompts engine operation upon interacting with the hot reservoir, while projection measurements and adjustment of the unitary driving protocols effectively reduce quantum friction to enhance finite-time engine performance compared to non-interacting and quasi-static counterparts. This setup presents a compelling avenue for further investigation of finite-time many-body quantum heat engines and provides an opportunity to explore the full potential of photon-mediated dipole-dipole interactions in their operations. Copyright © 2024, The Authors. All rights reserved.

关键词： Energy dissipation

来源：评论

学校读者我要写书评

暂无评论

Effect of structural defects on the physiochemical properties of supportive single-layer graphene in a sliding electrical contact interface under ambient conditions

引用

Applied Surface science 2023年第1期637卷

作者： Liu, Yi-Jia Wang, Ruei-Si Yang, Kun-Hua Cheng, Wen-Yao Huang, Shuei-De Chu, En-De Hsieh, Shang-Hsien Chen, Chia-Hao Wang, Yu-Han Liou, Jhe-Wei Woon, Wei-Yen Chiu, Hsiang-Chih Department of Physics National Taiwan Normal University Taipei11677 Taiwan National Synchrotron Radiation Research Center Hsinchu30076 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Institute of Atomic and Molecular Science Academia Sinica Taipei10617 Taiwan Department of Physics National Central University Taoyuan32001 Taiwan

We investigated the physiochemical properties of single-layer graphene (SLG) with controlled structural defects that were used in sliding electrical contact. Conductive atomic force microscopy (cAFM) probes applied with electric biases were used to rub the SLG surface under ambient conditions. Structural and chemical properties of rubbed SLG were investigated using Raman spectroscopy, photothermal infrared atomic force microscopy (AFM), and X-ray photoelectron spectroscopy. The work function (WF) and conductivity were determined using Kelvin probe force microscopy and cAFM. Adhesive properties were examined using AFM in the force-volume mode. Biases applied to the cAFM probe resulted in the tunneling triboelectric effect (TTE), which modulated the WF of SLG. The formation of water menisci around the cAFM probe–SLG contact will be electrolyzed, leading to the surface oxidation of SLG, which also impacts the WF of SLG. Compared with pristine SLG with minimum defects, more-defective SLG enhanced the TTE and surface functionalization during the rubbing process, substantially affecting the morphological, electronic, chemical, and adhesive properties of rubbed defective SLG. Our results demonstrated that the physiochemical properties of SLG in a sliding contact are considerably affected by the presence of structural defects in SLG, which should be considered when SLG is used for electrode applications. © 2023 Elsevier B.V.

关键词： Graphene

来源：评论

学校读者我要写书评

暂无评论

High-fidelity multipartite entanglement creation in non-Hermitian qubits

arXiv

引用

arXiv 2024年

作者： Liu, C.-Y. Feyisa, C.G. Hasan, Muhammad S. Jen, H.H. Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taiwan Department of Physics National Central University Taoyuan320317 Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan

Non-Hermitian quantum systems showcase many distinct and intriguing features with no Hermitian counterparts. One of them is the exceptional point which marks the PT (parity and time) symmetry phase transition, where an enhanced spectral sensitivity arises and leads to novel quantum engineering. Here we theoretically study the multipartite entanglement properties in non-Hermitian superconducting qubits, where high-fidelity entangled states can be created under strong driving fields or strong couplings among the qubits. Under an interplay between driving fields, couplings, and non-Hermiticity, we focus on generations of GHZ states or GHZ classes in three and four qubits with all-to-all couplings, which allows a fidelity approaching unity when relatively low non-Hermitian decay rates are considered. This presents an ultimate capability of non-Hermitian qubits to host a genuine and maximal multipartite entanglement. Our results can shed light on novel quantum engineering of multipartite entanglement generations in non-Hermitian qubit systems. Copyright © 2024, The Authors. All rights reserved.

关键词： Qubits

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：