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Novel Dopamine-Derived Carbon Modified Fe-Based Metal-Organic Framework Enhanced Aptasensor Rendering Ultrasensitive Electrochemical Detection of Oxytetracycline

SSRN

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SSRN 2024年

作者： Song, Jialing Fan, Xiaoxuan Ee, Liang Ying Lin, Xuanhao Li, Sam Fong Yau Huang, Manhong Singapore Donghua University China Shanghai University College of Science Department of Chemistry International Joint Laboratory Catalyst Chemistry Shanghai200444 China College of Environmental Science and Engineering State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry Donghua University Shanghai201620 China National University of Singapore Department of Chemistry 3 Science Drive 3 Singapore117543 Singapore Advanced Membranes and Porous Materials Center Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia Chemical Engineering Program Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia National University of Singapore Environmental Research Institute T Lab Building 5A Engineering Drive 1 Singapore117411 Singapore

In the present work, an aptasensor with dual binding sites based on Au NPs modified with self-polymerized polydopamine (PDA) and Fe-MOF is successfully constructed. In terms of standard electron transfer, the cyclic voltammetry (CV) analysis showcases a rate constant (ks) of 96.0 s-1, signifying an exceptional electron transfer rate of oxytetracycline at the sensor interface of Apt/Au@PDA@NH2-MIL-101(Fe)/GCE. Further deepening the investigation into electrochemical kinetics using chronoamperometry (CA), we investigated the electrocatalytic parameters (Kcat) of Au@PDA@NH2-MIL-101(Fe) in relation to oxytetracycline. The results divulged an impressive average Kcat value of 3.06×105 M-1 S-1. This evidence robustly suggests the superior electrocatalytic activity of Au@PDA@NH2-MIL-101(Fe) when it comes to oxytetracycline oxidation. A custom-designed portable rapid detection platform was developed, achieving detection limits of 6.88 nM under static water flow conditions and 5.56 nM under dynamic conditions. Remarkably, the self-polymerization of PDA on Au NPs not only refines their size but also boosts their interaction with biomolecules, thereby promising excellent biocompatibility. Moreover, the abundance of -COOH groups and unsaturated Fe3+ sites on the NH2-MIL-101(Fe) surface furnishes a considerable number of grafting sites for the aptamer. More importantly, the redox interplay between Au@PDA and NH2-MIL-101(Fe) accelerates electron movement, thus amplifying the electrochemical signal and the detection sensitivity for oxytetracycline. © 2024, The Authors. All rights reserved.

关键词： Rate constants

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Thermal Performance and Economic Evaluation of a Small Office Integrated with Phase Change materials

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SSRN 2023年

作者： Storm, Rafael Rank de Souza Barnasky, Ricardo Ritter Higa, Márcio de Oliveira, Júlio César Dainezi Maringá State University Colombo Avenue 5790 Maringá87020-900 Brazil Doctorate Program in Materials Science and Engineering Santa Catarina State University Brazil

The Phase Change materials (PCM) are one of the options to decrease the energy demand on edifications to meet the global climate challenges. These materials are characterized by a high value of latent heat, therefore increasing the building’s overall thermal inertia and decreasing the energy demand for thermal acclimatization. This paper studied the influence of theoretical layers of PCM in a typical commercial building located in different climate zones and performed an economic viability study for large scale applications Due to its unique characteristics, eight different Brazilian cities were chosen, in order to cover eight different bioclimates and three different PCM thickness were evaluated. Numerical simulations were performed in EnergyPlus with a standard edification developed by the U.S Department of Energy with changes in the building envelope in order to adapt the model to typical Brazilian envelopes. Phase change materials with twelve different phase change temperatures, varying from 25°C to 36°C, were compared to the reference scenario, in order to determine the most suitable temperature for each of the eight locations. Economic analyzes were performed based on the common prices of electricity and labor costs. The results showed a dynamic payback time between 27,3 and 43,3 years. © 2023, The Authors. All rights reserved.

关键词： Economic analysis

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Monolithic Germanium–Tin on Si Avalanche Photodiodes

arXiv

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arXiv 2024年

作者： Rudie, Justin Amoah, Sylvester Wang, Xiaoxin Kumar, Rajesh Abernathy, Grey Akwabli, Steven Grant, Perry C. Liu, Jifeng Li, Baohua Du, Wei Yu, Shui-Qing Material Science and Engineering University of Arkansas FayettevilleAR72701 United States Department of Electrical Engineering and Computer Science University of Arkansas FayettevilleAR72701 United States Thayer School of Engineering Dartmouth College HanoverNH03755 United States Arktonics LLC 1339 S. Pinnacle Dr. FayettevilleAR72701 United States Materials Science & Engineering Program University of Arkansas FayettevilleAR72701 United States Institute for Nanoscience and Engineering University of Arkansas FayettevilleAR72701 United States

We demonstrate monolithically grown germanium-tin (GeSn) on silicon avalanche photodiodes (APDs) for infrared light detection. A relatively thinner Ge buffer design was adopted to allow effective photo carriers to transport from the GeSn absorber to the Si multiplication layer such that clear punch-through behavior and a saturated primary responsivity of 0.3 A/W at 1550 nm were observed before avalanche breakdown in GeSn/Si APDs for the first time. The spectral response covers 1500 to 1700 nm. The measured punch-through and breakdown voltages are 15 and 17 V, respectively. Undisputed multiplication gain was obtained with the maximum value of 4.5 at 77 K, and 1.4 at 250 K, directly in reference to the saturated primary responsivity from the same device rather than a different GeSn p-i-n photodiode in previous reports. A peak responsivity was measured as 1.12 A/W at 1550 nm and 77 K. © 2024, CC0.

关键词： Avalanche photodiodes

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International Conference of Computer and Informatics engineering (IC2IE)

作者： Wandy Wandy Kusworo Adi Media Anugerah Ayu Doctoral Program of Information Systems School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Physics Faculty of Science and Mathematics Diponegoro University Semarang Indonesia Department of Computer Science Faculty of Engineering and Technology Sampoerna University South Jakarta Indonesia

ISBN: (数字)9798331505530

ISBN: (纸本)9798331505547

Full-marathon and Half-marathon distances are categorized as road running. Full-marathon running is becoming increasingly popular, and Half-marathon is increasing worldwide in both sexes and all age groups. Some aspects might relate to Full-marathon and Half-marathon running performance during training and races. Technology also plays an essential role in supporting runners and running races. Technology like artificial intelligence (AI) now supports the running athlete, not only predicting performance and results. It can also be used later to help the coach generate training programs for the athlete. This research aimed to find many aspects of marathons and performance and analyze them to see if artificial intelligence could later support them. It used secondary data and a systematic literature review proposed by Kitchenham. Out of the 58 articles, 21 of them (36.21%) received a score of 1 from Q1. Additionally, 19 articles (32.76%) received a score of 1 from both Q2 and Q3. Among the 58 articles, 9 (15.52%) received a total score of 3, with all three Q1, Q2, and Q3 scores being 1. This indicates that artificial intelligence will likely support the content of these nine articles. Several factors were also discovered to be connected to marathons and athletic performance. These findings suggested that additional investigation into marathons and performance, later backed by artificial intelligence, remained pertinent and essential.

关键词： Training Roads Artificial intelligence Informatics

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A robust bendable IrO_x thin film via mild alkaline solution process for neuron stimulating electrodes

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Surfaces and Interfaces 2024年 44卷

作者： Tso, Kuang-Chih Chan, Tzu-Ying Yu, Tsung-Chun Tao, Yu-Jen Chu, Chao-Yi Chen, San-Yuan Lee, Jyh-Fu Ohta, Jun Chen, Po-Chun Wu, Pu-Wei Graduate Program of Accelerator Light Source National Yang Ming Chiao Tung University Hsinchu 300 Taiwan Division of Materials Science Graduate School of Science and Technology Nara Institute of Science Technology Nara Ikoma Takayama 8916-5 Japan Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu 300 Taiwan Institute of Materials Science and Engineering National Taipei University of Technology Taipei 106 Taiwan National Synchrotron Radiation Research Center Hsinchu 300 Taiwan

We demonstrate a unique chemical formula to deposit hydrous iridium oxide thin film on a platinum-coated polyimide substrate. In a mild alkaline solution, the iridium (III) precursor undergoes the ligand exchange and hydrolysis reaction to become the iridium (III) dimers that are physically adsorbed on the substrate for subsequent heterogeneous condensation and growth of amorphous hydrous iridium oxide thin film. Both UV–Vis and X-ray absorption spectroscopy (XAS) are employed to determine the reaction steps involved. The chemical nature and crystallinity of the hydrous iridium oxide thin film are investigated by XAS, X-ray photon spectroscopy, and X-ray diffraction. The hydrous iridium oxide thin film reveals an impressive normalized charge storage capacity (CSC) of 0.3 mC/cm²-nm and a low impedance (80.5 Ω) at 1k Hz. In addition, in bending test of 3,000 cycles, the hydrous iridium oxide thin film retains 91.2 % of its initial normalized CSC without any physical crack and delamination. The cell viability test suggests negligible bio-toxicity. Our results provide a solid evidence of fabricating a robust flexible electrode for neural interfaces for potential use in implantable electronic devices. © 2023 Elsevier B.V.

关键词： Bio-electrode Flexible substrate Implantable electronic devices Iridium dimers Iridium oxide Polyimide

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engineering dimensionality of collective dipole-dipole interactions using a nanophotonic environment

Engineering dimensionality of collective dipole-dipole inter...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Ashwin K. Boddeti Yi Wang Xitlali Juarez Alexandra Boltasseva Hadiseh Alaeian Teri W. Odom Zubin Jacob Elmore Family School of Electrical and Computer Engineering and Birck Nanotechnology Center Purdue University West Lafayette Indiana USA Graduate Program in Applied Physics Northwestern University Evanston IL USA Department of Materials Science and Engineering Northwestern University Evanston Illinois USA Department of Chemistry and Department of Materials Science and Engineering Northwestern University Evanston Illinois USA

We experimentally demonstrate reduced dimensionality in a interacting ensemble of emitters. The well-known stretched exponential decay dynamics, I(t)/I 0 = exp(−γ D t)exp(−αt β ) with β = 0.5 in 3D geometries, is... 详细信息

ISBN: (纸本)9781957171258

关键词： Energy transfer Fluorescence Molecules Spontaneous emission Titanium dioxide

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Passivation of Perovskite Films Using Ionic Liquids

Passivation of Perovskite Films Using Ionic Liquids

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2022 Advances in science and engineering Technology International Conferences, ASET 2022

作者： Alashkar, Adnan Ibrahim, Taleb Khamis, Mustafa Hai Alami, Abdul American University of Sharjah Materials Science and Engineering PhD Program Sharjah United Arab Emirates American University of Sharjah Department of Chemical Engineering Sharjah United Arab Emirates American University of Sharjah Department of Biology Chemistry and Enviromental Sciences Sharjah United Arab Emirates University of Sharjah Department of Sustainable and Renewable Energy Engineering Sharjah United Arab Emirates

ISBN: (纸本)9781665418010

In this paper, the carrier recombination, and dynamics of Perovskite Solar Cells (PSC) are investigated. Ionic Liquids (IL) are presented in the bulk perovskite in an attempt to improve the dynamics of the charge transport layer. Time Resolved Photoluminescence (TRPL) is utilized to study the fast electronic decay of the perovskite samples and the influence of the IL on the stability of the perovskite film. The ILs are added to the perovskite in three ratios (5%, 10%, and 20%). The results showed that the presence of the ILs increases the electron lifetime inside the perovskite layer. In addition, 10% IL/perovskite displayed the highest increase of 72% in the lifetime. Where, for higher ratios, the lifetime started deteriorating. © 2022 IEEE.

关键词： Ionic liquids

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An Electrochemical Study of Phthalate Esters – Potential Low-Cost, Nonvolatile, and Oxidatively-Stable Electrolyte Components

SSRN

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SSRN 2023年

作者： Zhao, Yineng Tenhaeff, Wyatt E. Materials Science Program University of Rochester RochesterNY14627 United States Department of Chemical Engineering University of Rochester RochesterNY14627 United States

Electrolytes with low volatility/flammability and high oxidative stability are desirable for safe high-voltage energy storage. Phthalate esters are a class of organic molecules that are low cost, nonvolatile, and much less flammable than commercial liquid electrolytes. They have long been used as plasticizers in polymers and recently were shown to enhance the performance of nitrile-bearing polymer electrolytes, but little is known about their electrochemical properties relevant to energy storage applications. In this work, the thermal and electrochemical stability of phthalate esters employed as liquid electrolyte solvent were comprehensively investigated. Their ionic conductivity and electrochemical stability were reported for the first time. The conductivity of 1M LiTFSI in dimethyl-phthalate (DMP) was 2.1×10-4 S/cm at 25°C and 1.1×10-3 S/cm at 60°C. Significant evaporation was not observed until 147°C in an open environment. The DMP/LiTFSI electrolyte was stable up to 4.8 V vs. Li/Li+, outperforming state-of-the-art liquid electrolytes based on organic carbonates. Such properties are desirable for phthalates as plasticizers in high-voltage polymer/liquid electrolytes. However, it was demonstrated that the phthalates do not form passivating interfacial reaction layers with lithium metal anodes, making them incompatible with unprotected Li metal anodes. © 2023, The Authors. All rights reserved.

关键词： Plasticizers

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Distinct Composition-Dependent Topological Hall Effect in Mn2-xZnxSb

arXiv

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arXiv 2024年

作者： Nabi, Md Rafique Un Li, Yue te Velthuis, Suzanne G.E. Chhetri, Santosh Karki Upreti, Dinesh Basnet, Rabindra Acharya, Gokul Phatak, Charudatta Hu, Jin Department of Physics University of Arkansas FayettevilleAR72701 United States MonArk NSF Quantum Foundry University of Arkansas FayettevilleAR72701 United States Materials Science Division Argonne National Laboratory LemontIL60439 United States Department of Materials Science and Engineering Northwestern University EvanstonIL60208 United States Department of Chemistry áPhysics University of Arkansas at Pine Bluff Pine BluffAR71603 United States Materials Science and Engineering Program Institute for Nanoscience and Engineering University of Arkansas FayettevilleAR72701 United States

Spintronics, an evolving interdisciplinary field at the intersection of magnetism and electronics, explores innovative applications of electron charge and spin properties for advanced electronic devices. The topological Hall effect, a key component in spintronics, has gained significance due to emerging theories surrounding noncoplanar chiral spin textures. This study focuses on Mn2-xZnxSb, a material crystalizing in centrosymmetric space group with rich magnetic phases tunable by Zn contents. Through comprehensive magnetic and transport characterizations, we found that the high-Zn (χ>0.6) samples display THE which is enhanced with decreasing temperature, while THE in the low-Zn (χ © 2024, CC BY-NC-SA.

关键词： Manganese compounds

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An unexpected iron(Ⅱ)-promoted reaction of N-arylprop-2-yn-1-imines with water:Facile assembly of multi-substituted pyrroles

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Chinese Chemical Letters 2021年第1期32卷 37-39页

作者： Kaida Zhou Jiapian Huang Jie Wu Guanyinsheng Qiu School of Pharmaceutical and Materials Engineering&Institute for Advanced Studies Taizhou UniversityTaizhou 318000China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China College of Biological Chemical Science and EngineeringJiaxing UniversityJiaxing 314001China

Generation of multi-substituted pyrroles is accomplished through an unexpected iron(Ⅱ)-promoted reaction of N-arylprop-2-yn-1-imines with wate *** transformation proceeds smoothly with excellent chemoselectivityand regioselectivity.A stoichiometric amount of Fe(OTf)_(2) is necessary for the succes s ful conversion.A Lewis acid-promoted tandem reaction pathway is proposed.

关键词： Tandem reaction Iron(Ⅱ)triflate Prop-2-yn-1-imine Pyrrole Water

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