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Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)

作者： Yeu-Torng Yau Thanh-phu. Luu Department of Ph.D. Program Prospective Technology of Electrical Engineering and Computer Science National Chin-Yi University of Technology Taichung Taiwan Department of Electrical Engineering National Chin-Yi University of Technology Taichung Taiwan

ISBN: (数字)9784885523472

ISBN: (纸本)9798350349498

Conventional boost converters operating with hard-switching result in low conversion efficiency and increased electromagnetic interference emissions. In this paper, a cost-efficient passive snubber is proposed with a few additional components: two diodes, one capacitor, and one inductor. Moreover, because these snubber components are not located on the main power processing path, they only require low ratings, resulting in improved cost-effectiveness.

关键词： Snubbers Electromagnetic interference Capacitors Switches Electromagnetic compatibility Inductors

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Small-Molecule Analysis Based on dNA Strand displacement Using a Bacteriorhodopsin photoelectric Transducer: Taking ATP as an Example

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Sensors 2023年第17期23卷 7453-7453页

作者： Chen, Hsiu-Mei Wang, Wen-Chang Chen, Hong-Ren Department of Chemical Engineering National Taiwan University of Science and Technology Taipei10607 Taiwan The Ph.D. Program for Translational Medicine College of Medical Science and Technology Taipei Medical University Taipei11031 Taiwan

A uniformly oriented purple membrane (PM) monolayer containing photoactive bacteriorhodopsin has recently been applied as a sensitive photoelectric transducer to assay color proteins and microbes quantitatively. This study extends its application to detecting small molecules, using adenosine triphosphate (ATP) as an example. A reverse detection method is used, which employs AuNPs labeling and specific dNA strand displacement. A PM monolayer-coated electrode is first covalently conjugated with an ATP-specific nucleic acid aptamer and then hybridized with another gold nanoparticle-labeled nucleic acid strand with a sequence that is partially complementary to the ATP aptamer, in order to significantly minimize the photocurrent that is generated by the PM. The resulting ATP-sensing chip restores its photocurrent production in the presence of ATP, and the photocurrent recovers more effectively as the ATP concentration increases. direct and single-step ATP detection is achieved in 15 min, with detection limits of 5 nM and a dynamic range of 5 nM–0.1 mM. The sensing chip exhibits high selectivity against other ATP analogs and is satisfactorily stable in storage. The ATP-sensing chip is used to assay bacterial populations and achieves a detection limit for Bacillus subtilis and Escherichia coli of 102 and 103 CFU/mL, respectively. The demonstration shows that a variety of small molecules can be simultaneously quantified using PM-based biosensors. © 2023 by the authors.

关键词： photocurrents

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Novel Winding Method for Enhanced Bandwidth in Toroidal Cores

Novel Winding Method for Enhanced Bandwidth in Toroidal Core...

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Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)

作者： Yeu-Torng Yau Chih-Lung Yang Department of Ph.D. Program Prospective Technology of Electrical Engineering and Computer Science National Chin-Yi University of Technology Taichung Taiwan Technology Center Asian Power Devices Inc. Taoyuan Taiwan

ISBN: (数字)9798350389722

ISBN: (纸本)9798350389739

The boost converter-based AC/dC power factor correction converter, characterized by its simple structure and control ease, is extensively employed as a pre-stage converter in industrial power supply applications. Commercial products must pass relevant electromagnetic compatibility tests to ensure that the electromagnetic interference energy generated by their switching power converters comply with corresponding standards, such as IEC60950. In a boost converter, the primary noise sources include the pulse current generated when switching the power switch and the high-voltage, high-frequency square wave. The high-voltage, high-frequency square wave exhibits a high dv/dt at the "on" and "off" transients of the power switch, generating several high-frequency harmonics. Here, we propose an innovative winding method for toroidal inductors, demonstrating the potential to increase resonance frequency by over 50% and mitigate electromagnetic interference emissions more effectively than conventional winding processes.

关键词： Windings Noise Electromagnetic interference Resonant frequency Switches High-voltage techniques Electromagnetic compatibility Resonance Inductors Power harmonic filters

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PVA-based bioinks for 3d bioprinting: A comprehensive review of their applications in tissue engineering

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Bioprinting 2025年 49卷

作者： Johari, Narges Adabavazeh, Zary Baino, Francesco Materials Engineering Group Golpayegan College of Engineering Isfahan University of Technology Golpayegan Iran Ph.D. Program Graduate Institute of Precision Manufacturing National Chin-Yi University of Technology Taichung Taiwan Institute of Materials Physics and Engineering Department of Applied Science and Technology Politecnico di Torino Torino Italy

3d bioprinting is an innovative approach that overcomes the limitations of traditional methods for creating cell-laden biomaterials and constructs. It allows for the fabrication of complex and biologically active tissue structures. This review aims to provide a comprehensive evaluation of polyvinyl alcohol (PVA)-based bioinks within a 3d bioprinting framework. PVA-based bioinks exhibit remarkable properties, such as biocompatibility, biodegradability, and the ability to enhance cell growth and differentiation. These properties make them appropriate for many tissue engineering applications. The study evaluates the physicochemical and biological properties of PVA bioinks, including how they combine with other materials such as gelatin, chitin, chitosan, alginate, agarose, cellulose, κ-carrageenan, methacrylate, nanoparticles, mineral additives, carbon nanotubes, graphene oxide, and extracellular matrix components. Furthermore, this review evaluates the benefits of market availability and enhanced printing resolution, in addition to the challenges posed by complexity, dependency on support baths, and the risk of contamination. The objective of this review is to draw attention to the capabilities of PVA-based bioinks and provide guidelines for future research to improve the effectiveness of these materials in tissue engineering and regenerative medicine. © 2025 The Authors

关键词： Bioink Bioprinting Polyvinyl alcohol PVA-based bioinks

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Morphological Investigation and ph Sensing Properties of β-Ga2O3 Egfet-ph Sensor

SSRN

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SSRN 2023年

作者： Wuu, dong-Sing Yadlapalli, Bharath Kumar Chou, Hsin-Yu Chiang, Jung-Lung Department of Materials Science and Engineering National Chung Hsing University Taichung40227 Taiwan Ph.D. Program Prospective Technology of Electrical Engineering and Computer Science National Chin-Yi University of Technology Taichung411030 Taiwan Department of Applied Materials and Optoelectronic Engineering National Chi Nan University Nantou54561 Taiwan

In our study, β-Ga2O3 particles of various morphologies deposited on FTO glass substrates through hydrothermal method under different ph conditions and pre-stirring temperatures. The particles examined using XRd, FESEM, FTIR and Raman spectroscopy instruments. The results showed that the β-Ga2O3 microrods prepared with ph=3.15 solution at different pre-stirring temperatures followed by hydrothermal reaction had several crystalline orientations ([−401], [002], [403]). The FTIR and Raman spectra measurements confirmed the existence of Ga−O−Ga and Ga−OH bending modes. In the range of ph=3-11, the EGFET-ph sensor prepared with β-Ga2O3 microrods shown a high current-ph sensitivity of 0.541 (mA)1/2 /ph with a linearity of 97.83 % and a high voltage-ph sensitivity of 73.99 mV/ph with linearity of 96.85 %. These results suggest that β-Ga2O3 microrods have ph sensitivity higher than the ideal Nernstian response. This confirms the use of β-Ga2O3 microrods as a sensing membrane in high-performance ph sensors or biosensors. © 2023, The Authors. All rights reserved.

关键词： Gallium compounds

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Reusable Hydrogen Storage Tank with Flange design

Reusable Hydrogen Storage Tank with Flange Design

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International Conference on Applied System Innovation (ICASI)

作者： Yun-Qi Li Hsuan-Jung Chen Hsi-Wen Yang Chih-Yuan Chen Shao-Fu Chang Ssu-Ying Chen Chien-Chon Chen College of Engineering and Science Ph.D. Program in Materials and Chemical Engineering National United University Miaoli Taiwan Department of Chemistry Michigan State University MI USA Department of Materials Engineering National United University Miaoli Taiwan Graduate Institute of Intellectual Property National Taipei University of Technology Taiwan Department of Energy Engineering National United University Miaoli Taiwan

ISBN: (数字)9798350394924

ISBN: (纸本)9798350394931

For how to store and transport hydrogen, the first thought is to store hydrogen directly in the cylinder. However, this method is not desirable, because generally at least 700 atm high pressure, the hydrogen contained in the cylinder to be useful. Therefore it is very unsafe at such high pressures. In This paper, we design and production of a new generation of solid-state hydrogen storage and discharge container. The goal of “development of solid-state hydrogen storage technology” is to break through the bottlenecks of hydrogen storage technology safety, hydrogen storage density, high-efficiency hydrogen absorption and release, transportation safety, and engineering practice.

关键词： Technological innovation Hydrogen storage Temperature Surface resistance Hydrogen Transportation Production

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Ga2O3 nanorods synthesized by hydrothermal method for dual-functional sensing of ph value and glucose

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Sensors and Actuators A: physical 2023年 363卷

作者： Chou, Hsin-Yu Yadlapalli, Bharath Kumar Yen, Chao-Chun Singh, Anoop Kumar Chiang, Jung-Lung Wuu, dong-Sing Department of Materials Science and Engineering National Chung Hsing University Taichung40227 Taiwan Ph.D. Program Prospective Technology of Electrical Engineering and Computer Science National Chin-Yi University of Technology Taichung411030 Taiwan Department of Applied Materials and Optoelectronic Engineering National Chi Nan University Nantou54561 Taiwan

In this work, hydrothermal (HT)-synthesized gallium oxide (Ga2O3) nanorods were applied on indium tin oxide (ITO) glass substrates to create a dual-functional ph-glucose sensing device. Extended-gate field-effect transistors (EGFETs) were designed for ph and glucose sensing, and the response to ph levels ranging from 1 to 11 was tested using both chemical bath deposition (CBd) and high-pressure hydrothermal methods. Two sensor configurations, Ga2O3(CBd)/ITO/glass and Ga2O3(HT)/ITO/glass, were immersed in solution ph1 to 11 and cultured medium for hydrogen ion and glucose sensing. The results demonstrated that, for ph sensing in different samples, both IdS-VdS analysis and IdS-VGS analysis showed superior linearity and sensitivity with the HT method. For glucose detection, the HT method was selected for further experiments due to its maintained concentration-dependent relationship and selectivity towards various common sugars. When using culture medium dMEM as the sample (4.5 mg/ml glucose concentration), the accuracy of glucose estimation reached 99%. Stability and biocompatibility tests were also conducted, and the results indicated consistent performance. In summary, the HT-synthesized Ga2O3 nanorods exhibited high sensitivity, selectivity, and stability without affecting cell growth. Therefore, they hold great potential for applications not only in general blood glucose sensing but also in studying cell microenvironment metabolism. © 2023 Elsevier B.V.

关键词： Nanorods

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Unveiling Multivariate EEG Features: A Novel Approach to Enhancing AdHd diagnosis Through Visual and Auditory Attention Tests

Unveiling Multivariate EEG Features: A Novel Approach to Enh...

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2023 International Conference on Fuzzy Theory and Its Applications, iFUZZY 2023

作者： Fan, Zuo-Cian Lin, Ro-Wei Tsai, Ching-Shu Chou, Wen-Jiun Li, Chia-Jung Huang, Zih-Jun Shih, Bin-Yu Wang, Liang-Jen Ko, Li-Wei Department of Biological Science & Technology Hsinchu300 Taiwan National Yang Ming Chiao Tung University International Ph.D. Program in Interdisciplinary Neuroscience Hsinchu300 Taiwan Kaohsiung Chang Gung Memorial Hospit Department of Child and Adolescent Psychiatry National Yang Ming Chiao Tung University Institute of Electrical and Control Engineering Department of Electronics and Electrical Engineering Hsinchu300 Taiwan

ISBN: (纸本)9798350305791

We sought to revolutionize the classification of Attention-deficit/Hyperactivity disorder (AdHd) by pioneering an innovative approach that seamlessly integrated auditory and visual tests with electroencephalogram (EEG) coherence analysis, forming the foundation for our Support Vector Machine (SVM) models. Our primary objective was to achieve precise differentiation between individuals with AdHd and those without, aiming to reshape the landscape of AdHd diagnosis and early intervention. We constructed an SVM model based on CATA coherence, incorporating a carefully selected set of 180 features, and another grounded in CPT coherence with 70 features. Astonishingly, our exploration uncovered that a model incorporating CATA's coherence and Power Spectral density (PSd) as features achieved an astounding accuracy rate of 97.7%, using only half the number of features. This revelation hints at untapped potential for multivariate advancements in the realm of AdHd classification. The landscape of AdHd diagnosis and intervention is perpetually evolving, most notably with the FdA's approval of game therapy for AdHd. Leveraging the transformative power of our findings, we envision the development of user-friendly game therapies for in-home use, empowering both clinicians and parents alike. This marks a paradigm shift in the realm of AdHd intervention, offering objective, data-driven tools for the early management of AdHd. Gamified therapy not only enhances accessibility but also fosters engagement and compliance, all of which are pivotal in the long-term care of individuals with AdHd. In summary, our study represents a significant advancement in our comprehension and classification of AdHd. By fusing auditory and visual tests with EEG coherence analysis, fortified by state-of-the-art machine learning techniques, we have achieved an unprecedented level of accuracy in identifying individuals with AdHd. Our findings, aligned with the FdA-approved game therapy, offer a glimpse into a

关键词： Electroencephalography

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design of Optical System of Augmented Reality Near Eye device 6

Design of Optical System of Augmented Reality Near Eye Devic...

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6th IEEE Eurasian Conference on Educational Innovation, ECEI 2023

作者： Chang, Chao-Kai Yeh, Feng-Ming Lue, Jiann-Hwa Wang, Hsuan-Fu Hsieh, Ya-Hui Chiang, Chun-Yu Chen, der-Chin Tien, Chuen-Lin Department of Optometry Yuanpei University of Medical Technology Hsinchu Taiwan Department of Optometry Taiwan University of Science and Technology Taichung Taiwan Department of Aeronautical Engineering National Formosa University Yunlin Taiwan Department of Healthcare Information and Management Ming Chuan University Taoyuan Taiwan Ph.D. Program of Electrical and Communications Engineering Feng Chia University Taichung Taiwan Department of Electrical Engineering Feng Chia University Taichung Taiwan

ISBN: (纸本)9798350334289

Augmented reality (AR) is a technology that instantly merges digital pictures with the real scene. The perspective near-eye display is a key module of AR, through which computer-generated pictures or videos can be displayed in the existing environment. The purpose of this research is to establish the system structure of an augmented reality near-eye display device and to design the off-axis two-piece reflective aspherical mirror. Because AR glasses are wearable and are worn close to the eyes, not only the optical performance of the display but also the clear vision of the user needs to be considered. In this study, an off-axis two-piece reflective aspherical mirror is used as the optical system of the AR for displaying the digital image. The micro-display is placed at the focal point of the optical system to form a digital image, and the horizontal movement of the micro-display along the optical axis is controlled by a precise displacement mechanism so that the patient with uncorrected myopia or hyperopia can see the digital picture and real scene. Because the right and left micro-displays move horizontally independently, the user can see the images on the AR device, which becomes the biggest feature of this study. © 2023 IEEE.

关键词： Augmented reality

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Characterization of Bacterial Strains Isolated from Wastewater Polluted Soil for Synthetic dye decolorization Attributes

Characterization of Bacterial Strains Isolated from Wastewat...

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2021 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2021

作者： Ahsan, Wazir Aitizaz Lin, Chitsan National Kaohsiung University of Science and Technology Ph.D. Program In College of Hydrosphere Kaohsiung Taiwan National Kaohsiung University of Science and Technology Department of Marine Environmental Engineering Kaohsiung Taiwan

ISBN: (纸本)9781665419512

Soil is a renewable and valuable medium for variety of life. In Pakistan, factory effluents and domestic wastewater is generally not recycled and it contaminates the agricultural soils adjacent to nearby drains. Five screened isolates were subjected to azo dye decolorization (Reactive Black, Red Reactive, Blue direct, Congo Red direct) in the presence of NaCl, at variable ph levels and at different carbon sources. Isolate Sr-7, Ss-2-1 showed best decolorization ability in terms of all the azo dyes studied. Similarly, isolates Sr-2-1/1 and Mr-1/1 exhibited maximum phosphate solubilization and IAA production potential. The screened isolates can be used as inoculants to increase crop productivity in problem soils and can also be applied in wastewater treatments processes. © 2021 IEEE.

关键词： Azo dyes

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