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SSRN 2023年

作者： Mendija, Leanne Christie C. Dingcong, Roger G. Alfeche, Fortia Louise Adeliene M. Al-Moameri, Harith H. Dumancas, Gerard G. Malaluan, Roberto M. Alguno, Arnold C. Lubguban, Arnold A. Center for Sustainable Polymers Mindanao State University Iligan Institute of Technology Iligan City9200 Philippines Material Science and Engineering Program Graduate School of Engineering Mindanao State University Iligan Institute of Technology Iligan City9200 Philippines Department of Materials Engineering Mustansiriyah University Baghdad10052 Iraq Department of Chemistry The University of Scranton ScrantonPA18510 United States Department of Chemical Engineering and Technology Mindanao State University Iligan Institute of Technology Iligan City9200 Philippines Department of Physics Mindanao State University Iligan Institute of Technology Iligan City9200 Philippines

The pursuit of sustainable polyurethane product development necessitates a profound understanding of precursor materials, particularly polyol since polyurethane properties are heavily influenced by the type of polyol employed during polyurethane production. While traditional polyurethanes are solely derived from hydroxyl functionalized polyols, the emergence of amine-hydroxyl hybrid polyols has garnered significant attention due to their potential for enhancing polyurethane product properties. These hybrid polyols are characterized by the presence of both amine and hydroxyl functional groups. However, characterizing these polyols remains a daunting challenge due to the lack of established experimental testing standards for properties, such as fractional hydroxyl and amine moieties, and thermo-kinetic parameters for amine reactions with isocyanates. To bridge these gaps, this study employed a computational simulation approach to determine the fractions of moieties in both traditional and hybrid polyols. Additionally, this study determined the thermo-kinetic parameters for exothermic isocyanate reactions with amine moieties in hybrid polyols. The computational method integrated energy balance and reaction kinetics analysis for various polyols to elucidate the influence of functional moieties on the thermo-kinetic behavior of polyurethane formations. Validation of the simulated results was conducted by comparing their experimental and simulated gel and foam temperature profiles, highlighting the direct influence of fractional moieties on polyurethane formations. The comparisons revealed an average relative error of less than 5%, indicating the accuracy and credibility of the simulation. Thus, this study represents a pivotal opportunity for advancing knowledge and driving sustainable developments in biobased polyol characterization for polyurethane production streamlining and formulation optimization. © 2023, The Authors. All rights reserved.

关键词： Polymerization

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Planar or not planar is A problem. Electrochromic polyamides with The monomer containing dibenzofluorene fused to triphenylamine for smart windows with high contrast ratio aimed for energy conservation

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European Polymer Journal 2025年 235卷

作者： Minghao Zhai Chunli Ma Jingtao An Wanan Cai Tingting Zhou Haijun Niu Wen Wang Key Laboratory of Functional Inorganic Material Ministry of Education Department of Macromolecular Materials and Engineering School of Chemical Chemical Engineering and Materials Heilongjiang University Harbin 150086 PR China School of Materials Science and Engineering Harbin Institute of Technology Harbin 150080 PR China

According to requirement of energy conservation and environmental protection, electrochromic (EC) smart windows have been widespread implemented in building recently. However, there is challenge to tackle short life time and instability. During the EC smart windows (ESW) operation, as the electrolyte ions insert and detach from the EC film, the film will swell and shrink resulting in the collapse of the film. The molecules having planar part together with some twisted modification will take effect. Therefore, diphenylfluorene fused with triphenylamine (TPA) monomer is designed, followed by a series of polyamides (PAs) having been synthesized by polycondensation from the monomer and four dicarboxylic acids which exhibit superior solubility in polar solvents facile to form films. The solubility is mainly contributed to two benzene rings at the C9 position of the fluorene group, together with the two bulky TPA, which provide more pathways for the penetration of counter ions. The core fluorene moiety provides appropriate aggregate between mainchain resulting in the fast electrons hopping from polymer chain to conductive substrate. The polymer film (named DPFTPA-OA) exhibits 79 % transmittance change at 520 nm, as well as fast and stable EC behaviors (coloring/bleaching times of 2.2 s/1.3 s, and 1200 cycles of stabilization). Based on the superior voltage-controlled solar modulation capability of DPFTPA-OA, EnergyPlus simulation demonstrates that ESWs assembled with DPFTPA-OA by optimizing radiant heat exchange between indoor and outdoor environments in most China cities, have higher energy savings compared to commercial standard glass, so it exhibits considerable potential for energy management. In addition, DPFTPA-CA shows PL sensitive to 2,4,6-trinitrophenol (TNP) with K sv = 2.2 × 10 5 M -1 and LOD = 43 nM, exhibiting great potential in environmental hazard test.

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Crystal structure-controlled synthesis of NiMoO4/NiO hierarchical microspheres for high-performance supercapacitors and photocatalysts

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Journal of Energy Storage 2024年 97卷

作者： Lee, Kuen-Chan Huang, Jen-Hsien Wu, Yen-Ju Wang, Kuan-Syun Cho, Er-Chieh Hsu, Shih-Chieh Liu, Ting-Yu Department of Science Education National Taipei University of Education No. 134 Sec. 2 Heping E. Road Da-an District Taipei City106 Taiwan Ph.D. Program in Medical Neuroscience College of Medical Science and Technology Taipei Medical University 250 Wuxing Street Taipei City110 Taiwan Department of Green Material Technology Green Technology Research Institute CPC Corporation No.2 Zuonan Rd. Nanzi District Kaohsiung City81126 Taiwan 1-2-1 Sengen Tsukuba Ibaraki305-0047 Japan Department of Materials Engineering Ming Chi University of Technology New Taipei City243303 Taiwan School of Pharmacy College of Pharmacy Taipei Medical University 250 Wuxing Street Taipei City110 Taiwan Department of Chemical and Materials Engineering Tamkang University No. 151 Yingzhuan Road Tamsui District New Taipei City25137 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan City32003 Taiwan College of Engineering & Center for Sustainability and Energy Technologies Chang Gung University Taoyuan33302 Taiwan

Global environmental challenges and energy crises have driven researchers to develop multifunctional and highly efficient nanomaterials. This study presents dual-functional NiMoO4 (NMO)/NiO hierarchical microspheres that can serve as supercapacitors and photocatalysts prepared using a microwave-assisted hydrothermal method. The α- and β-phase contents of NMO can be regulated by controlling the post-annealing temperature and pH value of the precursor solution. The as-prepared NMO/NiO nanocomposites exhibited dual Faradaic redox reactions attributed to NMO and NiO, leading to remarkable supercapacitor performance. In addition, the constructed heterojunction between NMO and NiO also improved charge separation, leading to excellent photocatalytic capability. Based on the results, NMO with a higher β-phase content showed better supercapacitive and photocatalytic performance owing to its higher conductivity. The optimal NMO/NiO composite displayed a specific capacitance of 943 F g−1 at 1 A/g and excellent cycling stability, with 83.1 % retention at 5 A/g after 4000 cycles. Additionally, it demonstrated an outstanding photocatalytic capability for the degradation of methylene blue (MB), achieving a rate constant of (0.0113 min−1). © 2024 Elsevier Ltd

关键词： Supercapacitor

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CuO NWs boosted triboelectric microfluidic nanosensor functionalized by collagen-protein interactions for real-time platelet count monitoring

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Chemical engineering Journal 2024年 490卷

作者： Lin, Jia-Cheng Kaswan, Kuldeep Chatterjee, Subhodeep Wu, Yu-Wen Kumar Sharma, Manish Ranjan, Ashok Roy Barman, Snigdha Lin, Yu-Zih Burnouf, Thierry Boireau, Wilfrid Lu, Ming-Yen Tu, Yong-Kwang Su, I-Chang Wu, Ping-Hsiu Lin, Zong-Hong Fan, Yu-Jui School of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Taipei Neuroscience Institute Taipei Medical University Taipei11031 Taiwan Department of Biomedical Engineering National Taiwan University Taipei11031 Taiwan International Intercollegiate PhD Program National Tsing Hua University Hsinchu30013 Taiwan Department of Power Mechanical Engineering National Tsing Hua University Hsinchu30013 Taiwan Graduate Institute of Biomedical Materials and Tissue Engineering Taipei Medical University Taipei11031 Taiwan Department of Material Science and Engineering National Tsing Hua University Hsinchu30013 Taiwan Institute of Biomedical Engineering National Tsing Hua University Hsinchu30013 Taiwan International PhD Program in Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Université de Franche-Comté CNRS Institut FEMTO-ST BesançonF-25030 France Department of Neurosurgery Shuang Ho Hospital Taipei Medical University New Taipei City23561 Taiwan Department of Surgery School of Medicine College of Medicine Taipei Medical University Taipei11031 Taiwan Department of Radiology School of Medicine College of Medicine Taipei Medical University Taipei11031 Taiwan Department of Radiation Oncology Taipei Medical University Hospital Taipei11031 Taiwan Center for Precision Health and Quantitative Sciences Taipei Medical University Hospital Taipei 11031 Taiwan

Blood platelet count significantly affects the development of severe conditions like myocardial infarction, peripheral arterial ischemia, respiratory compromise, stroke, diabetes, coronavirus disease 2019 (COVID-19), along with chemotherapy patients and those suffering cardiovascular diseases (CVDs). These conditions necessitate frequent monitoring of platelet counts to guide diagnostic and therapeutic decisions. However, existing techniques are relatively time-consuming, lack of accuracy and require precise operation. The emergence of these severe diseases underscored the need to develop advanced platelet count-monitoring techniques which are rapid, highly precise, and conveniently portable for point-of-care applications. In this study, we emphasized the development of a triboelectric microfluidic nanosensor (TMNS) for platelet quantification through the assessment of flow resistance. The functionality of TMNS device is based on immobilization of platelets on a collagen layer coated inside a microfluidic channel. The triboelectric voltage output is measured as a detection signal of the flow resistance and is enhanced by incorporating high surface area copper oxide nanowires (CuO NWs) on the interior of copper tubes. These copper tubes serve as terminal electrodes and for flow guiding. The flow resistance of plasma solutions is elevated when the platelet concentration increases due to heightened adherence of platelets onto the collagen layer. Variations in flow resistance induce alterations in contact electrification, causing changes in output voltage at load terminals. Fine-tuning of the TMNS device was achieved by optimizing the channel width and length, flowing liquid viscosity, and voltage measurement technique. Platelet quantification sensing data were acquired through the combination of platelet-rich plasma (PRP) and platelet-poor plasma (PPP) solutions. The described device exhibits promising capabilities for platelet-count monitoring in whole-blood samples c

关键词： Copper oxides

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Ultrastrong Spin-Photon Coupling in Gadolinium Gallium Garnet

Ultrastrong Spin-Photon Coupling in Gadolinium Gallium Garne...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Kritzell, T. Elijah Bao, Junzhe Doumani, Jacques Lee, Jae Joon Xu, Hongjing Tay, Fuyang Nojiri, Hiroyuki Bamba, Motoaki Baydin, Andrey 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 Rice University HoustonTX77005 United States Institute for Materials Research Tohoku University Sendai980-8577 Japan The Hakubi Center for Advanced Research Kyoto University Kyoto606-8502 Japan Department of Physics I Kyoto University Kyoto606-8502 Japan Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Material Science and NanoEngineering Rice University HoustonTX77005 United States

We examine ultrastrong coupling of an ensemble of paramagnetic spins in Gd3Ga5O12 with terahertz photons in the presence of a high external magnetic field both in the bulk and thin-film limits. © 2023 The Author(s)

ISBN: (纸本)9781957171258

关键词： Photons

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Tear Growth Mechanisms in High-Grade Bursal-Sided Partial Thickness Tears in the Rotator Cuff Measured with Full Volume Methods

SSRN

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SSRN 2025年

作者： Villacís Núñez, Carla Nathaly Scheven, Ulrich Bedi, Asheesh Arruda, Ellen M. Department of Mechanical Engineering University of Michigan G.G. Brown Laboratory 2350 Hayward St. Ann ArborMI48109 United States Department of Orthopedic Surgery University of Michigan Taubman Health Care Center 2912 1500 E Medical Center Dr. Ann ArborMI48109 United States Department of Biomedical Engineering University of Michigan 1107 Carl A. Gerstacker Building 2200 Bonisteel Blvd Ann ArborMI48109 United States Program of Macromolecular Science and Engineering University of Michigan 1221 Beal Ave Ann ArborMI48109 United States 2464 Stone Rd. Ann ArborMI48105 United States

In this work, we evaluate the mechanical response of rotator cuff tendons with high-grade partial thickness tears through a novel full volume measurement technique. As opposed to traditional strain-measurement methods, which examine surfaces of the tendon or localized two-dimensional regions, we have probed three-dimensional strains including internal locations. Differences between the intact and torn states have been considered. The torn condition depicts sliding between cut/uncut tissue regions, revealing regions of high shear strain concentration at the boundaries of detached/attached tissue portions. At both submaximal and supramaximal force levels, the internal and inferior bands of the tendon show high shear strain magnitudes, which could indicate regions of high risk for tear propagation. Geometrical features which could explain strain distribution differences in their intact and torn conditions are also analyzed. Through the understanding of full volume displacement and strain distributions, our study elucidates why two-dimensional values might not represent the global behavior of the injured tendon, critical components of the Lagrangian strain tensor which have not been probed before, and important implications for surgical repairs. © 2025, The Authors. All rights reserved.

关键词： Tendons

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Novel Biodegradable Ca–P/Ti–F Composite Conversion Coatings for Improving the Corrosion Resistance of Medical Magnesium materials

SSRN

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SSRN 2024年

作者： Sun, Ying-Sui Chu, Peng-Wei Cheng, An-Yu You, Jhu-Lin Chang, Tsung-Ming Jian, Shun-Yi Chi, Chun-Shang Liu, Yu-Cheng Chang, Chin-Jou School of Dental Technology College of Oral Medicine Taipei Medical University Taipei Taiwan Department of Engineering and System Science National Tsing Hua University Hsinchu300044 Taiwan Department of Chemical & Materials Engineering Chung Cheng Institute of Technology National Defense University Taoyuan335 Taiwan System Engineering and Technology Program National Chiao Tung University Hsinchu300 Taiwan Department of Material Engineering Ming Chi University of Technology New Taipei City24301 Taiwan Center for Plasma and Thin Film Technology Ming Chi University of Technology New Taipei243303 Taiwan Combination Medical Device Technology Division Medical Devices R&D Service Department Metal Industries Research & Development Centre Kaohsiung802 Taiwan

Mg and its alloys are characterized by favorable biocompatibility and nontoxicity, and these properties have stimulated considerable research interest in their application as degradable biomaterials for medical implants. However, the clinical application of these materials is restricted by their rapid degradation. Therefore, this study designed a surface modification method for Mg and Mg alloys to enable them to satisfy clinical requirements. A two-step conversion coating method was applied to pure Mg. Pure Mg samples were first coated with calcium phosphate (Ca–P), following which they were coated with titanium fluoride (Ti–F), resulting in the production of Mg samples coated with a bioactive Ca–P/Ti–F composite. The composition of the coated samples was investigated through energy-dispersive X-ray spectroscopy with transmission electron microscopy, and their morphology was characterized through scanning electron microscopy. Moreover, hydrogen evolution measurements in simulated body fluid (SBF), electrochemical impedance spectroscopy, and polarization curves were employed to evaluate the samples’ corrosion resistance. The prepared composite conversion coatings had an average thickness of approximately 350 nm, and their corroded area was less than 5% of their total area following their immersion in SBF for 72 h. Thus, the prepared Ca–P/Ti–F composite conversion coatings effectively inhibited Mg corrosion in SBF. Moreover, the attachment and differentiation of MG-63 cells on the prepared coatings were observed. © 2024, The Authors. All rights reserved.

关键词： Energy dispersive spectroscopy

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A triboelectric nanogenerator-based tactile sensor array system for monitoring pressure distribution inside prosthetic limb

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Nano Energy 2023年 111卷

作者： Chang, Kuie-Bin Parashar, Parag Shen, Li-Chien Chen, An-Rong Huang, Yan-Tsz Pal, Arnab Lim, Kee-Chin Wei, Po-Han Kao, Fu-Cheng Hu, Jin-Jia Lin, Zong-Hong Department of Mechanical Engineering National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Biomedical Engineering National Taiwan University Taipei Taiwan Department of Material Science and Engineering National Tsing Hua University Hsinchu Taiwan Institute of Biomedical Engineering National Tsing Hua University Hsinchu Taiwan International Intercollegiate PhD Program National Tsing Hua University Hsinchu Taiwan Department of Orthopaedic Surgery Chang Gung Memorial Hospital Taoyuan Taiwan College of Medicine Chang Gung University Taoyuan Taiwan Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu30013 Taiwan

In the prosthetic field, quantifying interfacial pressure distribution between the amputee's residual limb and the socket's internal environment is imperative for developing new technologies. However, the commercially available pressure sensors have several disadvantages, namely external power supply requirements, low stability, high cost, and complexities related to integrating the sensor system into prosthetic devices. Herein, we propose a self-powered triboelectric nanogenerator (TENG) based flexible tactile sensor array system to monitor prosthetic socket internal pressure distribution in real-time. The proposed sensor consists of biocompatible polydimethylsiloxane (PDMS) polymer and polycaprolactone (PCL) nanofiber membranes as triboelectric materials. The biodegradable PCL nanofiber membrane, fabricated via a scalable and cost-effective electrospinning process, possesses a high surface area-to-volume ratio, facilitating enhanced charge generation during triboelectrification. The as-fabricated TENG-based tactile sensor is highly stable up to 10,000 cycles. Furthermore, the voltage of the tactile sensor is independent of different temperature and humidity values, demonstrating the stability of the sensor under various environmental conditions. Finally, we successfully integrated the tactile sensor array within a prosthetic device to monitor real-time pressure distribution inside the prosthetic socket during gait simulation. We believe that the proposed novel design provides a new dimension for the rapid development of self-powered, low-cost, and highly stable pressure monitoring systems with considerable potential for commercialization. © 2023 Elsevier Ltd

关键词： Electrospinning

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Effective strategies to reduce triethylene glycol consumption in natural gas processing plants

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Case Studies in Chemical and Environmental engineering 2022年 5卷

作者： Trueba, Luis Gaston, Tyler Brackin, James Miller, Joseph You, Byoung-Hee Department of Engineering Technology Texas State University San Marcos 78666 TX United States Material Science Engineering and Commercialization Program Texas State University San Marcos 78666 TX United States Ingram School of Engineering Texas State University San Marcos 78666 TX United States

Triethylene glycol (TEG) is the desiccant most frequently used in natural gas processing plants to decrease natural gas water vapor content to levels at or below those required by salable gas standards (less than 7 lb per MMSCF (112 mg/Sm³) in the U.S.). Several parameters have a significant influence on the successful operation of TEG dehydration systems. Identifying and controlling these parameters can reduce major TEG losses and temporary shutdowns of gas plants. This can be accomplished by creating standard operating procedures so that TEG is only utilized when the water vapor content of the natural gas is greater than above salable levels. In doing so, TEG needs to be stored at ideal temperatures in a manner that shields it from oxygen. Isolating the dehydration system and automating TEG dispersion based on the gas water vapor content limits TEG loss to vapor, corrosion of gas handling equipment, and operational excursions. The solutions discussed are automatic variation of TEG circulation rates, use of an inert gas in TEG storage tanks, a simplified TEG usage monitoring system, and improving the function of the flash gas separator. The results of the study show a significant reduction in operating costs for a typical gas plant if all solutions are fully implemented. © 2022 The Authors

关键词： Natural gas dehydration TEG consumption Triethylene glycol (TEG)

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A three-stage magnetic phase transition revealed in ultrahigh-quality van der Waals magnet CrSBr

arXiv

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arXiv 2022年

作者： Liu, Wenhao Guo, Xiaoyu Schwartz, Jonathan Xie, Hongchao Dhale, Nikhil Sung, Suk Hyun Kondusamy, Aswin L.N. Wang, Xiqu Zhao, Haonan Berman, Diana Hovden, Robert Zhao, Liuyan Lv, Bing Department of Physics The University of Texas at Dallas RichardsonTX75080 United States Department of Physics University of Michigan Ann ArborMI48109 United States Department of Material Science and Engineering University of Michigan Ann ArborMI48109 United States Department of Chemistry University of Houston HoustonTX77004 United States Department of Materials Science and Engineering University of North Texas DentonTX76203 United States Applied Physics Program University of Michigan Ann ArborMI48109 United States Department of Materials Science & Engineering The University of Texas at Dallas RichardsonTX75080 United States

van der Waals (vdW) magnets are receiving ever-growing attention nowadays due to their significance in both fundamental research on low-dimensional magnetism and potential applications in spintronic devices. High crystalline quality of vdW magnets is key for maintaining intrinsic magnetic and electronic properties, especially when exfoliated down to the 2D limit. Here, ultrahigh-quality air-stable vdW CrSBr crystals are synthesized using the direct vapor-solid synthesis method. The high single crystallinity and spatial homogeneity have been thoroughly evidenced at length scales from sub-mm to atomic resolution by X-ray diffraction, second harmonic generation, and scanning transmission electron microscopy. More importantly, specific heat measurements of these ultrahigh quality CrSBr crystals show three thermodynamic anomalies at 185K, 156K, and 132K, revealing a stage-by-stage development of the magnetic order upon cooling, which is also corroborated with the magnetization and transport results. Our ultrahigh-quality CrSBr can further be exfoliated down to monolayers and bilayers easily, paving the way to integrate them into heterostructures for spintronic and magneto-optoelectronic applications. Copyright © 2022, The Authors. All rights reserved.

关键词： Magnetism

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