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SSRN 2022年

作者： Wang, Qun Fang, Bingbing Liu, Chenyu Tu, SiSi Cha, Limei Ramachandran, Chidambaram Seshadri College of Materials Science and Engineering Hunan University Hunan Changsha410082 China Material Science and Engineering Program Guangdong Technion Israel Institute of Technology Shantou515063 China Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion Guangdong Technion Israel Institute of Technology Shantou515063 China Department of Materials Science and Engineering The State University of New York Stony BrookNY11794 2275 United States

In this study,Plasma Electrolytic Oxidation(PEO)coatings with Carbon Nanotubes(CNTs)were prepared on Selective Laser Melting(SLM)AlSi10Mg alloy by PEO treatment with CNTs addition to the *** mechanism of doping CNTs into PEO coatings and the morphology of the resultant PEO coatings were mainly *** corrosion and wear/tribological resistance of PEO coatings with CNTs addition were examined by electrochemical experiments and dry sliding *** results indicate that: the addition of CNTs resulted in a dense outer layer composed of γ-Al 2 O 3 ,and the inner layer was a porous layer composed of amorphous Al 2 O 3 and amorphous SiO 2 .In addition,the CNT significantly increased the hardness and wear resistance of the PEO coatings formed on the SLM AlSi10Mg. © 2022, The Authors. All rights reserved.

关键词： Alloys

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Imaging of Nanoscale Light Confinement in Plasmonic Nanoantennas by Brownian Optical Microscopy (vol 14, pg 7666, 2020)

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ACS NANO 2020年第9期14卷 12261-12261页

作者： Lee, Yeon Ui Wisna, G. Bimananda M. Hsu, Su-Wen Zhao, Junxiang Lei, Ming Li, Shilong Tao, Andrea R. Liu, Zhaowei Department of Electrical and Computer Engineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Material Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Department of Electrical and Computer Engineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Department of Electrical and Computer Engineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Department of Electrical and Computer Engineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Material Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Department of Electrical and Computer Engineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States Material Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla California 92093 United States

The strongly enhanced and confined subwavelength optical fields near plasmonic nanoantennas have been extensively studied not only for the fundamental understanding of light-matter interactions at the nanoscale but also for their emerging practical application in enhanced second harmonic generation, improved inelastic electron tunneling, harvesting solar energy, and photocatalysis. However, owing to the deep subwavelength nature of plasmonic field confinement, conventional optical imaging techniques are incapable of characterizing the optical performance of these plasmonic nanoantennas. Here, we demonstrate super-resolution imaging of ∼20 nm optical field confinement by monitoring randomly moving dye molecules near plasmonic nanoantennas. This Brownian optical microscopy is especially suitable for plasmonic field characterization because of its capabilities for polarization sensitive wide-field super-resolution imaging.

关键词： super-resolution imaging plasmonic nanoantennas hot spot imaging Brownian optical microscopy fluorescence enhancement nanophotonics plasmonics

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Development of liquid biofuel properties through the blending of biodiesel from used cooking oil and pyrolysis oil from low-quality rubber waste

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Moonsin, Preecha Roschat, Wuttichai Phewphong, Sunti Watthanalao, Sittichai Maneerat, Bunterm Thammayod, Aekkaphon Leelatam, Tappagorn Suwannarong, Prawit Yoosuk, Boonyawan Janetaisong, Pathompong Promarak, Vinich Program of Chemistry Faculty of Science Ubon Ratchathani Rajabhat University Mueang District Ubon Ratchathani 34000 Thailand Biomass Energy Research Laboratory Center of Excellence on Alternative Energy Research and Development Institution Sakon Nakhon Rajabhat University Mueang District Sakon Nakhon 47000 Thailand Program of Chemistry Faculty of Science and Technology Sakon Nakhon Rajabhat University Mueang District Sakon Nakhon 47000 Thailand Innovation in Chemistry for Community Research Unit Faculty of Science and Technology Sakon Nakhon Rajabhat University Mueang District Sakon Nakhon 47000 Thailand Appropriated Technology Center Faculty of Science and Technology Sakon Nakhon Rajabhat University Mueang District Sakon Nakhon 47000 Thailand Program of Environment Science Faculty of Science and Technology Sakon Nakhon Rajabhat University Mueang District Sakon Nakhon 47000 Thailand National Energy Technology Center (ENTEC) 114 Thailand Science Park Phahonyothin Road Klong Luang Pathumthani 12120 Thailand Department of Material Science and Engineering School of Molecular Science & Engineering Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand

This study explores the potential of enhancing waste rubber pyrolysis oil (WRPO) by blending it with biodiesel derived from used cooking oil (WCO biodiesel oil) to improve its suitability as an alternative biofuel. The hypothesis posits that such blending will improve fuel stability, reduce acidity, and enhance combustion efficiency. The methodology included fuel characterization, preparation of various blending ratios, and evaluation of fuel properties, engine performance, and emissions. WRPO was found to contain high levels of aromatic and oxygenated compounds, resulting in high acidity (0.48 mg KOH/g), low viscosity (1.93 cSt), and a reduced heating value (44.39 MJ/kg). In contrast, WCO biodiesel oil exhibited strong ester characteristics, contributing to improved combustion and stability. Blending WRPO with WCO biodiesel oil at a 50:50 ratio (P50:B50 blend) enhanced fuel properties, including a density of 895 kg/m³, reduced viscosity (3.28 cSt), and a lower acid value (0.26 mg KOH/g), along with an increased heating value of 45.60 MJ/kg—approaching that of conventional diesel. Engine testing showed improved torque and reduced brake-specific fuel consumption (BSFC) compared to pure WRPO. Emission analysis revealed reductions in CO (18.5 %), HC (23.7 %), and smoke opacity (16.2 %), while NO_x emissions remained below diesel levels due to the lower combustion temperature of WRPO. These results suggest that the P50:B50 blend effectively addresses the drawbacks of WRPO, offering a promising, sustainable alternative to conventional diesel through improved performance, reduced emissions, and waste-to-energy valorization. © 2025 The Authors

关键词： Biodiesel oil Fuel blending Liquid biofuel Pyrolysis oil Sustainable energy

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Large Negative Magnetoresistance in Antiferromagnetic Gd2Se3

arXiv

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arXiv 2025年

作者： Chhetri, Santosh Karki Acharya, Gokul Graf, David Basnet, Rabindra Rahman, Sumaya Sharma, M.M. Upreti, Dinesh Nabi, Md. Rafique Un Kryvyi, Serhii Sakon, Josh Mortazavi, Mansour Da, Bo Churchill, Hugh Hu, Jin Department of Physics University of Arkansas FayettevilleAR72701 United States National High Magnetic Field Lab TallahasseeFL32310 United States Department of Chemistry & Physics University of Arkansas at Pine Bluff Pine BluffAR71603 United States Material Science and Engineering Program Institute for Nanoscience and Engineering University of Arkansas FayettevilleAR72701 United States Department of Chemistry & Biochemistry University of Arkansas FayettevilleAR72701 United States MonArk NSF Quantum Foundry University of Arkansas FayettevilleAR United States Center for Basic Research on Materials National Institute for Materials Science Ibaraki Tsukuba305-0044 Japan

Rare earth chalcogenides provide a great platform to study exotic quantum phenomena such as superconductivity and charge density waves. Among various interesting properties, the coupling between magnetism and electronic transport has attracted significant attention. Here, we report the investigation of such coupling in α-Gd2Se3 single crystals through magnetic, calorimetric, and transport property measurements. α-Gd2Se3 is found to display an antiferromagnetic ground state below 11 K with metamagnetic spin-flop transitions. The magnetic fluctuations remain strong above the transition temperature. Transport measurements reveal an overall metallic transport behavior with a large negative magnetoresistance of ~ 65% near the magnetic transition temperature, together with positive MR near the field-induced spin-flop transitions, which can be understood in terms of the suppression of spin scattering by the magnetic field. © 2025, CC BY-NC-ND.

关键词： Gadolinium compounds

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Microstructural and micro-chemical evolutions in irradiated UCO fuel kernels of AGR-1 and AGR-2 TRISO fuel particles

Microstructural and micro-chemical evolutions in irradiated ...

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2021 International Conference on High-Temperature Reactor Technology, HTR 2021

作者： Fu, Zhenyu Yang, Yong van Rooyen, Isabella J. Meher, Subhashish Kombaiah, Boopathy Nuclear Engineering Program Department of Materials Science and Engineering University of Florida PO Box 116400 100 Rhines Hall GainesvilleFL32611 United States Fuel Design and Development Department Idaho National Laboratory Idaho FallsID83415-6188 United States Material Science Department Idaho National Laboratory Idaho FallsID83415-6188 United States Advanced Characterization Department Idaho National Laboratory Idaho FallsID83415-6188 United States

AGR-1 and AGR-2 tristructural-isotropic (TRISO) fuel particles were fabricated using slightly different fuel kernel chemical compositions, modified fabrication processes, different fuel kernel diameters, and changed235U enrichments. Extensive microstructural and analytical characterizations were conducted to correlate those differences with the fuel kernels’ responses to neutron irradiations in terms of irradiated fuel microstructure, fission products’ chemical and physical states, and fission gas bubble evolutions. The studies used state-of-the-art transmission electron microscopy (TEM) equipped with energy-dispersive x-ray spectroscopy (EDS) via four silicon solid-state detectors with super sensitivity and rapid speed. The TEM specimens were prepared from selected AGR-1 and AGR-2 irradiated fuel kernels exposed to safety testing after irradiation. The particles were chosen in order to create representative irradiation conditions with fuel burnup in the range of 10.8 to 18.6% fissions per initial metal atom (FIMA) and time-average volume-average temperatures varying from 1070 to 1287°C. The235U enrichment was 19.74 wt.% and 14.03 wt.% for the AGR-1 and AGR-2 fuel kernels, respectively. The TEM results showed significant microstructural reconstructions in the irradiated fuel kernels from both the AGR-1 and AGR-2 fuels. There are four major phases: fuel matrix of UO2 and UC, U2RuC2, and UMoC2—in the irradiated AGR-2 fuel kernel. Zr and Nd form a solid solution in the UC phase. The UMoC2 phase often features a detectable concentration of Tc. Pd was mainly found to be located in the buffer layer or associated with fission gas bubbles within the UMoC2 phase. EDS maps qualitatively show that rare-earth fission products (Nd et al.) preferentially reside in the UO2 phase. In contrast, in the irradiated AGR-1 fuel kernel, no U2RuC2 or UMoC2 precipitates were positively identified. Instead, there was a high number of rod-shaped precipitates enriched with Ru, Tc, Rh, and Pd o

关键词： Fission products

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Synchronous Synthesis and Separation of Hydrophobic Ionic Liquids Through Janus Membrane Reactors

SSRN

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SSRN 2022年

作者： Wu, Qian Li, Hao-Nan Zhang, Wen-Ting Cao, Ye Weng, Rui-Bin Li, Yong-Jin Yang, Jing Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University No. 2318 Yuhangtang Rd. Hangzhou311121 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province Department of Polymer Science and Engineering Zhejiang University Hangzhou310027 China

Traditional synthesis and purification of ionic liquids (ILs) are usually isolated. The overall procedure consumes a large quantity of organic solvents and is limited to lab scale synthesis. Thus, a greener and large-scale preparation of ILs requires a simultaneous synthesis and separation without volatile organic solvents. Herein, we establish a framwork for synchronous synthesis and separation of hydrophobic ILs based on an environmentally benign membrane reactor system. A Janus hollow fiber membrane reactor (JHFMR) with a thin and charged inner surface and IL-philic outer surface is prepared by mussel-inspired co-deposition. The hydrophilic lumen surface supplies a reaction zone for anion metathesis, and the surface charge can destabilize the emulsified target ILs dispersed in water, followed by a unidirectional transmembrane delivery. Multiple JHFMRs are assembled to prepare a module for continnously preparing water-immiscible ILs in a cross-flow mode. The ILs yield can be enhanced by increasing the packing density, as high as 96% after 30 h. The residual water is limited to below 1.00 wt%, and the halogen impurity is negligible ( © 2022, The Authors. All rights reserved.

关键词： Ionic liquids

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Natural rubber-based pressure sensitive adhesive as a drug carrier

Natural rubber-based pressure sensitive adhesive as a drug c...

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International Conference on Advanced materials in Environment, Energy and Health Applications, AMEEHA 2022

作者： Puyathorn, Napaphol Limsirilak, Sasiprapa Pichayakorn, Wiwat Kalkornsurapranee, Ekwipoo Phaechamud, Thawatchai Program of Pharmaceutical Engineering Faculty of Pharmacy Silpakorn University Nakhon Pathom73000 Thailand Faculty of Pharmacy Siam University Bangkok10160 Thailand Department of Pharmaceutical Technology Faculty of Pharmaceutical Sciences Prince of Songkla University Songkhla90110 Thailand Division of Physical Science Faculty of Science Prince of Songkla University Songkhla90110 Thailand Department of Pharmaceutical Technology Faculty of Pharmacy Silpakorn University Nakhon Pathom73000 Thailand Natural Bioactive and Material for Health Promotion and Drug Delivery System Group Faculty of Pharmacy Silpakorn University Nakhon Pathom73000 Thailand

Natural rubber (NR) has been utilized in several products from its interesting unique properties. This study aimed to develop the pressure-sensitive adhesives (PSA) as the transdermal patches from NR by two-roll mill kneading technique. Hydroxyethyl cellulose (HEC) was blended as a tackifier agent. The propranolol HCl and ibuprofen at different parts per hundred of rubber (phr) were loaded into this developed PSA. The appearance, thickness, crystallinity, contact angle, water sorption and erosion, adhesion, and in vitro drug permeation of these patches were evaluated. The thickness of all patches was in the range of 0.46-1.07 mm. The drug-loaded patches showed diverse unique topographies depended on both type and amount of drug incorporation. From powder X-ray diffraction analysis, the plain NR-PSA showed the amorphous structure, while the halo pattern inserted with sharp drug peaks were observed on drug-loaded PSA. The contact angle of all samples was in the range of 80-90° indicating their hydrophobic surface. However, they displayed an increased % water sorption with the time of soaking. The 2-4 N adhesion force was evident for all fabricated drug-loaded PSAs. The propranolol HCl permeated from PSA notably lower than ibuprofen. The residual of the drugs in patches was about 85-90 %. These results provided the basic physicochemical properties for the further development of PSA as the transdermal patch. © 2022 Elsevier Ltd. All rights reserved.

关键词： Rubber

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Integrated application of grafted ZnO and fungicide to control the fungicide-resistant Colletotrichum spp

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Journal of the Taiwan Institute of Chemical Engineers 2024年 155卷

作者： Chang, Tao-Ho Chen, Yi-Chi Lai, Yu-Fang Wu, Tzu-Chien Lai, Chian-Hui Hsueh, Han-Yu Chang, Pi-Fang Linda Program in Plant Health Care Academy of Circular Economy National Chung Hsing University Nantou540216 Taiwan Innovation and Development Center of Sustainable Agriculture National Chung Hsing University Taichung402202 Taiwan Master Program for Plant Medicine and Good Agricultural Practice National Chung Hsing University Taichung402202 Taiwan Department of Material Science & Engineering National Chung Hsing University Taichung402202 Taiwan Graduate Institute of Biomedical Engineering National Chung Hsing University Taichung402202 Taiwan Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung807378 Taiwan Department of Plant Pathology National Chung Hsing University 402202 Taiwan

Background: The Food and Agriculture Organization has reported approximately 40 % of food loss due to damage from plant pests and diseases, including fungal infections. Continuous application of agrichemicals for controlling fungal infection cause the occurrence of fungicide resistance. Colletotrichum spp., major causal agents for strawberry anthracnose, have gained concern for fungicide resistance issues. Methods: We developed novel antifungal strategies in the present study by integrating multibranched flower-like ZnO (fZnO) and agrochemicals (trifloxystrobin). fZnO compounds were synthesised using an eco-friendly and efficient hydrothermal method. Charged polymers with steric structures, such as hydrophilic polyacrylic acid (PAA) and polyethyleneimine (PEI), were grafted onto fZnO surfaces to improve the suspension ability of the compounds. We used the grafted fZnO compounds in combination with the fungicide trifloxystrobin to evaluate the in vitro and in vivo activities. Significant findings: Grafted fZnO (80 ppm) and trifloxystrobin (100 ppm) effectively inhibited the growth of fungicide-resistant Colletotrichum spp. and limited strawberry anthracnose on leaves. PEI-grafted fZnO shows promise as an eco-friendly additive in sustainable agriculture due to its photocatalytic activity and ability to withstand environmental factors. © 2023

关键词： Zinc oxide

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Spontaneous Vertical Phase Distribution of Multi-Acceptors System Enables High-Efficiency Organic Photovoltaics in Non-Halogenated Solvent and Large-Area Module Application

SSRN

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SSRN 2023年

作者： Kong, Xiangyue Zhan, Lingling Li, Shuixing Yin, Shouchun Qiu, Huayu Fu, Yuang Lu, Xinhui Chen, Zeng Zhu, Haiming Fu, Weifei Chen, Hongzheng Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou311121 China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X Polymers Department of Polymer Science and Engineering Zhejiang University Hangzhou310027 China Department of Physics Chinese University of Hong Kong New Territories999077 Hong Kong Department of Chemistry Zhejiang University Hangzhou310027 China

Building a vertical phase distribution morphology with a simple method is the critical key for high-efficiency organic photovoltaics (OPVs) and their industrial application. Here, OPVs based on a quaternary system with one donor PM6 and three acceptors (L8-BO, BTP-S8, and BTP-S2) were fabricated. The L8-BO-based blend was demonstrated to show unique vertical phase distribution (acceptors enriched on the top surface), leading to an exquisite morphology and superior carrier behaviors, thus power conversion efficiencies (PCEs) of 19.19% (certified as 19.18%) and 19.04% were achieved for chloroform-processed and toluene-processed devices, respectively. The high efficiency obtained from greener solvent is encouraging for commercialization of OPVs. Notably, the device processed with toluene without any additives shows a PCE of 17.28% with good stability, and the upscaled large-area module with a total area of 72.25 cm2 processed in air presents an outstanding PCE of 12.78%. This work provides valuable insights into the fabrication of greener solvent and large-area module OPVs. © 2023, The Authors. All rights reserved.

关键词： Toluene

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Full-Duplex Beamforming in the Sub-Terahertz Regime

Full-Duplex Beamforming in the Sub-Terahertz Regime

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International Conference on Infrared and Millimeter Waves

作者： Subhajit Karmakar Atsutse Kludze Jacques Doumani Andrey Baydin Junichiro Kono Yasaman Ghasempour Department of Electrical and Computer Engineering Princeton University Princeton NJ USA Department of Electrical and Computer Engineering Rice University Houston TX USA Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston TX USA Smalley-Curl Institute Rice University Houston TX USA Department of Physics and Astronomy Rice University Houston TX USA Department of Material Science and NanoEngineering Rice University Houston TX USA

We propose a novel architecture that realizes full-duplex directional beamforming in the sub-terahertz regime. Our architecture leverages the frequency-controlled beam steering of leaky-wave antenna together with the polarization-dependent response of aligned single-wall carbon nanotubes. We evaluate the performance of this architecture via preliminary experiments.

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