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2023 IEEE Microwaves, Antennas, and Propagation Conference, MAPCON 2023

作者： Kumari, Ankita Azad, Prakrati Kumar, Abhishek Akhtar, M. Jaleel Indian Institue of Teechnology Kanpur Dept. of Electrical Engineering Kanpur India Indian Institue of Teechnology Kanpur Material Science Program Kanpur India

ISBN: (纸本)9798350328264

This study presents a novel CSRR-loaded stepped-CPW sensor to detect adulteration levels of glycol in medical-grade solvents. The proposed RF system comprising the stepped-CPW resonant sensor and specially designed molded glass capillary tube as a sample holder, is well suited for detecting small levels of adulteration in bio-grade glycerol. The main advantage of the proposed sensor is its strong field confinement in the sensing region, defined in terms of the shift in the resonance frequency resulting from changes in the dielectric constant. It is demonstrated that the two-ring CSRR topology, excited by the stepped-CPW and designed on a 0.8 mm thick FR-4 substrate operating at 8 GHz, provides improved sensitivity and high Q-factor compared to its single-ring counterpart. The proposed sensor is tested to detect the adulteration level of EG in medical glycerol. Various adulteration levels of EG in glycerol can be detected using the proposed device due to a substantial shift in the resonant frequency with even a small change in the adulteration level. This study introduces a comprehensive theoretical framework, including vital factors to be considered during the design phase, and explores the usage of the proposed sensor for quality monitoring of various types of medical-grade fluids. © 2023 IEEE.

关键词： CPW CSRR ethylene glycol glycerol sensor

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engineering education and the global economy: The search for policy

Engineering education and the global economy: The search for...

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113th Annual ASEE Conference and Exposition, 2006

作者： Devon, Richard Kisenwether, Elizabeth Schuhmann, Richard Pangborn, Robert Barron, Kim Pennsylvania State University United States Department of Engineering Design Engineering Design Program School for Engineering Design Technology United States Engineering Entrepreneurship Program Engineering Leadership Program United States Department of Civil and Environmental Engineering Undergraduate Studies and International Programs College of Engineering Department of Material Science Industrial Engineering at Penn State United States

engineering education in the United States is confronted with some new realities, both real and perceived. engineering is increasingly a globally distributed, cooperative activity and the US outsourcing of research, design, manufacturing, and construction overseas is growing. Further, the production of engineers in the United States is falling to around 5-6% of the global supply with clear signs that engineering education is available at lower costs, often far lower, in other countries. Many have viewed this globalization as a competitive situation for engineering education in the United States that we are losing. We will present the view that in terms of the quality of engineering education (which engineering educators can influence) as opposed to the global economy (about which we can do little), engineering education is still very strong in the US and likely to remain that way. However, we will present some recommendations based on our professional responsibilities in running programs in entrepreneurship, leadership, and design. In particular, we will review survey data collected from Penn State engineering graduates over the last decade which helps define new paths for integrating entrepreneurship, leadership and design into the engineering curriculum. We believe that there are some very real ways in which engineering education can, and should be, responding to the new requirements for success in professional engineering careers that derive from national needs as well as from the globalization of engineering. © American Society for engineering Education, 2006.

关键词： engineering education

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Ionic liquids as additives for thermoplastics

Ionic liquids as additives for thermoplastics

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Society of Plastics Engineers Annual Technical Conference: Plastics Encounter at ANTEC 2007

作者： Park, K.I. Xanthos, M. Material Science and Engineering Program New Jersey Institute of Technology Newark NJ Otto H. York Department of Chemical Engineering New Jersey Institute of Technology Newark NJ

In attempts to develop new process modifiers for thermoplastics, two ionic liquids with long chain hydrophobic cations and different anions were introduced in a biodegradable polymer. Methods of incorporation included melt blending, solvent casting and microencapsulation from w/o/w systems at concentrations up to 10 wt%. The modified polymers were characterized Theologically and by TGA to determine process and thermal stability, respectively, and by DSC to determine miscibility and types of the polymer-ionic liquid interactions. Potential applications in plasticization, lubrication and emulsification are discussed for selected polymer-ionic liquid combinations.

关键词： Ionic liquids

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The Indoor People Tracking and Counting System

The Indoor People Tracking and Counting System

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2023 International Automatic Control Conference, CACS 2023

作者： Lin, Hao-Pu Han, Chin-Chuan Liao, Jun-Wei Ciou, Chong-Han Hong, Yi-Cheng Tan, Ming-Lun National United University Ph. D. Program in Material and Chemical Engineering MiaoLi Taiwan National United University Department of Computer Science and Information Engineering MiaoLi Taiwan

ISBN: (纸本)9798350306354

COVID-19 outbreaks and becomes serious from 2019 winter. Taking body temperature, wearing masks, recording footprint and avoiding crowds become important tasks and require a lot of manpower support for the prevention of the epidemic in every. In this study, we have integrated the infrared thermometer devices to measure people temperature and the people identities through RGB images at the entrance of buildings. Using the computer vision and deep learning methods, we would like to build a 24/7 and region-wide coverage assistance system to automatically record the footprint of a specific people in the building. We also detect if people taking off their masks in the yard at any time. The processing videos are grabbed from the existing CCTV systems. The developed system also locates the crowd and calculate the number of people in a specified area, and the manager can know the number of people and control the access in real time. It will reduce the burden of manpower. In addition, we have optimized the system performance to handle multiple camera videos and to reduce the hardware cost at the same time. © 2023 IEEE.

关键词： Access control

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Accelerated oxidation of silicon due to x-ray irradiation

Accelerated oxidation of silicon due to x-ray irradiation

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12th European Conference on Radiation and Its Effects on Component and Systems, RADECS 2011

作者： Bhandaru, Shweta Zhang, En Xia Fleetwood, Daniel M. Reed, Robert A. Weller, Robert A. Weiss, Sharon M. Interdisciplinary Graduate Program in Material Science Vanderbilt University Nashville TN 37235 United States Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN 37235 United States

Enhanced rates of oxide growth have been observed on silicon when exposed to high-energy x-ray irradiation. This observed effect could potentially be utilized for remote total ionizing dose-sensing applications. ©... 详细信息

ISBN: (纸本)9781457705878

关键词： Silicon

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Short Wave Infrared Upconversion Imager with Electron Blocking Layer to Screen Electron Injection into Photosensitive Layer 5

Short Wave Infrared Upconversion Imager with Electron Blocki...

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5th IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2023

作者： Shin, Chanho Li, Ning Ng, Tse Nga University of California San Diego Material Science and Engineering Program La Jolla United States University of California San Diego Department of Electrical and Computer Engineering La Jolla United States

ISBN: (纸本)9781665457330

In this work, we demonstrated upconversion imagers integrated with shortwave infrared photodetectors paired with an electron blocking layer. The use of electron blocking layer screened charge injection to prevent recombination in photosensitive layer. The characteristics of each electron blocking layer were analyzed in aspects of noise and detectivity. For the optimized device, the parasitic luminance in the dark was efficiently suppressed, and the photon-to-photon efficiency was increased. The electron blocking layer used in this work is generally applicable for upconversion imagers using different absorption and emitting materials. © 2023 IEEE.

关键词： Photodetectors

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Fused-ring induced end-on orientation in conjugated molecular dyads toward efficient single-component organic solar cells

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Aggregate 2023年第2期4卷 291-299页

作者： Dongdong Xia Shengxi Zhou Wen Liang Tan Safakath Karuthedath Chengyi Xiao Chaowei Zhao Frédéric Laquai Christopher R.McNeill Weiwei Li Institute of Applied Chemistry Jiangxi Academy of SciencesNanchangChina Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijingChina Department of Materials Science and Engineering Monash UniversityClaytonAustralia KAUST Solar Center(KSC) Physical Sciences and Engineering Division(PSE)Material Science and Engineering Program(MSE)King Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia

The molecular orientations of conjugated materials on the substrate mainly include edge-on,face-on,and ***-on and face-on orientations have been widely observed,while end-on orientation has been rarely *** in organic solar cells(OSCs)charge transport is along the vertical direction,end-on orientation with conjugated backbones perpendicular to the substrate is recognized as the ideal microstructure for *** this work,we for the first time obtained the preferential end-on orientation in a conjugated molecular dyad that contains a conjugated backbone as donor and perylene bisimide side units as *** was realized by introducing a fused-ring structure to replace linear terthiophenes with conjugated backbones,yielding F-MDPBI and L-MDPBI ***,a shifting trend of the molecular orientation from dominating edge-on in L-MDPBI to preferential end-on in F-MDPBI was *** a consequence,vertical charge carrier mobilities in F-MDPBI are one order of magnitude higher than those with preferential edge-on orientation,so single-component OSCs based on this molecular dyad as a single photoactive layer provided a power conversion efficiency of 4.89% compared to 1.70% based on L-MDPBI with preferential edge-on orientation.

关键词： conjugated molecular dyads crystallinity edge-on end-on single-component organic solar cells

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Design and Optimization of the Porous Metamaterial EM Absorbers in X-band

Design and Optimization of the Porous Metamaterial EM Absorb...

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2023 IEEE Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMC+SIPI 2023

作者： Anurakparadorn, Kanat Taub, Alan Michielssen, Eric University of Michigan Macromolecular Science and Engineering Program Department of Material Science and Engineering Ann ArborMI United States University of Michigan Department of Mechanical Engineering Ann ArborMI United States University of Michigan Department of Electrical Engineering and Computer Science Ann ArborMI United States

ISBN: (纸本)9798350309768

A strategy that combines experiment and simulation to design and optimize electromagnetic (EM) metamaterial absorbers containing a periodic porous structure is described. The approach provides the ability to produce absorbers that meet multiple user-specified objectives. Using the measured intrinsic properties of the baseline materials as an input to EM-field based computational modelling and optimization, absorption by the studied metamaterials measured by their reflection loss (RL) increases significantly. The resulting metamaterials have the potential for lower cost and lighter weight while providing greater protection than traditional metal gaskets and foams. © 2023 IEEE.

关键词： Metamaterials

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Characterization of Zirconia Nanoparticles Produced by Biomimetic Condensation

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Microscopy and Microanalysis 2012年第S2期18卷 1592-1593页

作者： Arellano-Jiménez, M. Josefina Hire, Chetan Adamson, Douglas Carter, C. Barry Department of Chemical Materials and Biomolecular Engineering University of Connecticut Storrs CT 06269 United States Polymer Program Institute of Material Science University of Connecticut Storrs CT 06269 United States Department of Chemistry Institute of Material Science University of Connecticut Storrs CT 06269 United States

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

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Donor-modified anthocyanin dye-sensitized solar cell with TiO2 nanoparticles: Density functional theory investigation 5th

Donor-modified anthocyanin dye-sensitized solar cell with Ti...

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5th International Conference on engineering and Innovative materials, ICEIM 2016

作者： Eka, Cahya Prima Brian, Yuliarto Suyatman Hermawan, Kresno Dipojono Advanced Functional Material Laboratory Department of Engineering Physics Faculty of Industrial Technology Institut Teknologi Bandung Indonesia International Program on Science Education Faculty of Mathematics and Science Education Universitas Pendidikan Indonesia Indonesia Computational Material Design and Quantum Engineering Laboratory Engineering Physics Department Faculty of Industrial Technology Institut Teknologi Bandung Indonesia

ISBN: (纸本)9783038357704

Nowadays, the anthocyanin natural dye has been used as a good photosensitizer for TiO2 solar cells due to its availability as well as its performance. However, the dye still has a problem regarding its narrow absorbance at 550 nm. The aim of study will extend the dye’s absorbance up to NIR spectrum, so that it will increase the TiO2 solar cell performance. The cyanidin-3-glucoside-7- diphenilamine-2′-acrylic acid (CGDA) will be introduced as the new modification of D-π-A functional material in anthocyanin dye. The investigation of the material has been carried out by the density functional theory of TD-DFT/UB3LYP/6-31+G(d,p) level. The findings show that first;the dye absorbance has broadened up to 885 nm due to the reduction of gap energy and the increase of electronic transition probabilities from 84.7% to 96.0%. Second, the molecular orbital analysis shows that both diphenylamine and acrylic acid perform as promising donor and acceptor groups for anthocyanin. Third, CGDA has the light harvesting efficiency of 46.7% surrounding NIR spectrum area. Finally, the NIR anthocyanin dye possessing HOMO of -5.536 eV and LUMO of -2.886 eV fulfills the criteria of both the effective charge transfer from LUMO dye into conduction band TiO2 and the good dye regeneration by the electrolyte redox. © 2017 Trans Tech Publications, Switzerland.

关键词： Titanium dioxide

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