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| 1 | Pressure Wave and Fluid Velocity in a Bend-Mode Inkjet Nozzle with Double PZT Actuators显示文摘A new concept of bend-mode inkjet nozzle with double PZT (lead zirconate titanate) actuators has been designed and fabricated in the present study. Then the pressure wave and fluid velocity at the nozzle exit have been investigated. The complex pressure behavior inside the channel was solved numerically based on the narrow channel acoustic theory. The two PZTs attached to a rectangular channel were actuated sequentially by setting the waveforms of each PZT to be center-aligned with various pulse widths. As a result, the double PZT actuation is superior to the single PZT actuation in view of strong momentum force and fast dissipation of residual pressure. The maximum fluid velocity at the nozzle exit is observed when the respective pulse widths equal to their optimum pulse widths. The numerical results are supported by the experimental results with the fabricated inkjet device by measuring the speed of meniscus just out of the nozzle. | Sungu Kim Jaeyong Sung Myeong Ho Lee | 2013 | Journal of Thermal Science2013，22，1： | 2 |
| 2 | Rapid biological synthesis of silver nanoparticles using plant leaf extracts显示文摘 | SONG Jaeyong KIM Beomsoo | 2009 | Bioprocess Biosyst Eng2009，32，1： | 1 |
| 3 | Creating new technology through alliances : An empirical investigation of joint patents 显示文摘 | Kim Changsu Song Jaeyong | 2007 | Technovation2007，27，： | 1 |
| 4 | Creating new technology through alliances: An empirical investigation of joint patents显示文摘 | Changsu Kim Jaeyong Song | 2007 | Technovation2007，，8： | 1 |
| 5 | Pharmacokinetic Comparison of Sustained- and Immediate-Release Oral Formulations of Cilostazol in Healthy Korean Subjects: A Randomized, Open-Label, 3-Part, Sequential, 2-Period, Crossover, Single-Dose, Food-Effect, and Multiple-Dose Study显示文摘 | Donghwan Lee Lay Ahyoung Lim Seong Bok Jang Yoon Jung Lee Jae Yong Chung Jong Rak Choi Kiyoon Kim Jin Woo Park Hosang Yoon Jaeyong Lee Min Soo Park Kyungsoo Park | 2011 | Clinical Therapeutics2011，，12： | 1 |
| 6 | Creating new technology through alliances: an empirical investigation of joint pa- tents 显示文摘 | Changsu Kim Jaeyong Song | 2007 | Technovation2007，27，： | 1 |
| 7 | Creating new technology through alliances: An empirical investigation of joint patents显示文摘 | Changsu Kim Jaeyong Song | 2007 | Technovation2007，，8： | 1 |
| 8 | Rapid biological synthesis of silver nanoparticles using plant leaf extracts 显示文摘 | SONG Jaeyong KIM Beomsoo | 2009 | Bioprocess Biosyst Eng2009，32，1： | 1 |
| 9 | Learning and Inno- vation: Exploitation and Exploration Trade -offs 显示文摘 | Changsu Kim Jaeyong Song and Atul Nerkar | 2012 | Journal of Business Research2012，65，8： | 1 |
| 10 | NMDA receptor-mediated calcium influx plays all essential role in myoblast fusion显示文摘 | KunHo Lee JaeYong Park Kyungjin Kim | 2004 | FEBS Left2004，578，12： | 1 |
| 11 | Expression of a-galactosidase gene from Leuconostoc mesenteroides SYI in Leuconostoc citreum显示文摘 | PARK JAEYONG SEON-JU JEONG JEONG HW AN KIM | 2007 | J Microbiol Biot2007，17，12： | 1 |
| 12 | Recurrent Autoencoder Ensembles for Brake Operating Unit Anomaly Detection on Metro Vehicles显示文摘The anomaly detection of the brake operating unit (BOU) in thebrake systems on metro vehicle is critical for the safety and reliability ofthe trains. On the other hand, current periodic inspection and maintenanceare unable to detect anomalies in an early stage. Also, building an accurateand stable system for detecting anomalies is extremely difficult. Therefore,we present an efficient model that use an ensemble of recurrent autoencodersto accurately detect the BOU abnormalities of metro trains. This is the firstproposal to employ an ensemble deep learning technique to detect BOUabnormalities in metro train braking systems. One of the anomalous caseson metro vehicles is the case when the air cylinder (AC) pressures are less thanthe brake cylinder (BC) pressures in certain parts where the brake pressuresincrease before coming to a halt. Hence, in this work, we first extract the dataof BC and AC pressures. Then, the extracted data of BC and AC pressuresare divided into multiple subsequences that are used as an input for bothbi-directional long short-term memory (biLSTM) and bi-directional gatedrecurrent unit (biGRU) autoencoders. The biLSTM and biGRU autoencodersare trained using training dataset that only contains normal subsequences. Fordetecting abnormalities from test dataset which consists of abnormal subsequences, the mean absolute errors (MAEs) between original subsequences andreconstructed subsequences from both biLSTM and biGRU autoencoders arecalculated. As an ensemble step, the total error is calculated by averaging twoMAEs from biLSTM and biGRU autoencoders. The subsequence with totalerror greater than a pre-defined threshold value is considered an abnormality.We carried out the experiments using the BOU dataset on metro vehiclesin South Korea. Experimental results demonstrate that the ensemble modelshows better performance than other autoencoder-based models, which showsthe effectiveness of our ensemble model for detecting BOU anomalies onmetro trains. | Jaeyong Kang Chul-Su Kim Jeong Won Kang Jeonghwan Gwak | 2022 | Computers, Materials & Continua2022，，10： | 0 |
| 13 | High-pressure triggered quantum tunneling tuning through classical percolation in a single nanowire of a binary composite显示文摘In the era of miniaturization,the one-dimensional nanostructures presented numerous possibilities to realize operational nanosensors and devices by tuning their electrical transport properties.Upon size reduction,the physical properties of materials become extremely challenging to characterize and understand due to the complex interplay among structures,surface properties,strain effects,distribution of grains,and their internal coupling mechanism.In this report,we demonstrate the fabrication of a single metal-carbon composite nanowire inside a diamondanvil-cell and examine the in situ pressure-driven electrical transport properties.The nanowire manifests a rapid and reversible pressure dependence of the strong nonlinear electrical conductivity with significant zero-bias differential conduction revealing a quantum tunneling dominant carrier transport mechanism.We fully rationalize our observations on the basis of a metal-carbon framework in a highly compressed nanowire corroborating a quantum-tunneling boundary,in addition to a classical percolation boundary that exists beyond the percolation threshold.The structural phase progressions were monitored to evidence the pressure-induced shape reconstruction of the metallic grains and modification of their intergrain interactions for successful explanation of the electrical transport behavior.The pronounced sensitivity of electrical conductivity to an external pressure stimulus provides a rationale to design low-dimensional advanced pressure sensing devices. | Sudeshna Samanta Mokwon Lee Deok-Soo Kim Jaeyong Kim Lin Wang | 2019 | Nano Research2019，12，6： | 0 |
| 14 | 腐植酸和硝酸银存在下银纳米粒子对细菌的吸收显示文摘银纳米粒子(AgNPs)是一种潜在的抗菌材料,会引起细胞膜的损伤,并能产生活性氧(ROS)。由此产生的细胞膜的结构性变化能够增加银离子和AgNPs在细胞中的渗透能力。为了进一步阐述这个问题,我们测试了这种纳米材料的体内和体外细胞毒性,并通过这种方法来量化和评估它们的纳米毒性。考虑到AgNPs在环境中的行为,毒性可能受到其物理化学性质(尺寸、附聚率、在腐植酸上的吸附性能)和毒性抑制性质的差异影响。我们通过附聚和吸附动力学研究了细胞吸收AgNPs的作用。试验发现,尺寸小于14nm的AgNPs的附聚和吸附高于尺寸为90nm和140nm的AgNPs的附聚和吸附。对于大小为90nm和140nm的AgNPs,吸附作用显著大于附聚作用。值得注意的是,在正规概念下,AgNPs越小越容易被吸收这一正常概念在非生物因素相互作用下可能是错误的。 | Eunjoo Bae Hee-Jin Park Jaeyong Yoon Younghun Kim Kyunghee Choi Jongheop Yi 韩立新 | 2013 | 腐植酸2013，，3： | 0 |
| 15 | Dehydro-Diels-Alder reaction and diamondization of bowl-shaped clusters C_(18)Te_(3)Br_(4)(Bu-O)_(6)显示文摘Dehydro-Diels-Alder(DDA)reaction is a textbook reaction for preparing six-membered rings in solution but is scarcely seen in solid-state synthesis.In this work,using multiple characterization techniques,we demonstrate that the bowl-shaped clusters C_(18)Te_(3)Br_(4)(Bu-O)_(6) might experience a DDA reaction at room temperature and high pressure between 5.5 and 7.4 GPa.Above 17.0 GPa,it is found that the bonding conversion from the intramolecular sp^(2) to the intermolecular spa occurred,in the form of pressure-induced diamondization.The recovered samples from 20.0 and 36.1 GPa showed incomplete reversibility,while the decompression-induced graphitization of glassy carbon was observed during decompression from 46.5 GPa.The electrochemical impedance spectroscopy results indicated that the transport properties changed from grain boundary dominant to grain dominant due to the DDA reaction and the grain boundary effect disappeared as the intermolecular sp3 bonding building-up and carrier transmission channel formation above 17.0 GPa.The results in this study open a new route to construct the crystalline carbon materials with different transport properties. | Jinbo Zhang Manli Ma Rong Zhou Hongqiang Chu Xue Wang Shaojie Wang Huhu Tian Zhipeng Yan Mingtao Li Zhongyan Wu Bin Li Jiafeng Yan Lan Anh Thi Nguyen Rongxing Cao Guoqing Wu Xianghua Zeng Hao-Li Zhang Jaeyong Kim Lin Wang Yongjun Tian | 2022 | Nano Research2022，15，5： | 0 |
| 16 | Flexible micro-LED display and its application in Gbps multi-channel visible light communication显示文摘A flexible full-color micro-LED display with high mechanical robustness was fabricated by printing quantum dots(QDs)on a blue micro-LED array using standard photolithography.The red and green colors yielded from QDs exhibit a better color gamut than conventional color filters.The light conversion efficiency was enhanced by adding TiO2 nanoparticles to the QD-photoresist composite.This full-color micro-LED display was successfully mounted on various unusual substrates such as curved glass,fabrics,and human skin,enabling diverse optoelectronic applications.In addition,wireless multi-channel visible light communication(VLC)based on the wavelength-division-multiplexing orthogonal-frequency-division-multiplexing(WDM-OFDM)technique was demonstrated using a QD-based color micro-LED panel.A high data transmission rate of 1.9 Gbps was successfully obtained owing to the high electrical-optical modulation bandwidth of the QD-based micro-LED panel. | Luhing Hu Jaeyong Choi Sumin Hwangbo Do-Hoon Kwon Bongkyun Jang Seunghyeon Ji Jae-Hyun Kim Sang-Kook Han Jong-Hyun Ahn | 2022 | npj Flexible Electronics2022，6，1： | 0 |
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