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收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

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🏛️國立陽明交通大學機構典藏

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    Connecting interface for modularization of digital microfluidics
    (2008-01-01)
    Yang, Hanping
    ;
    Fan, Shib-Kang
    ;
    Hsu, Wensyang
    ;
    機械工程學系
    ;
    奈米科技中心
    Here, interconnection technique to link digital microfluidic chips is proposed. Three kinds of digital microfluidic modules with connecting interface, including flexible module and two types of connector modules, are designed and fabricated. Since these modules are fabricated on a compliant polymer-based substrate (ITO PET), chip-to-chip droplet transportation even at different planes can be achieved by the proposed technique. A low-temperature fabrication process is developed for the polymer substrates, where the SU-8 acts as the insulator. Droplet transportation through electrowetting on curved surface is confirmed by testing on the bended flexible modules with different curvatures from 0 to 0.06 mm(-1) at around 70 V-AC. Then the droplet transportations between flexible and connector modules are investigated. It is found that the gap size between two modules and the sidewall profiles at interface affect the droplet transportation directly. For the gap size around 50 mu m with a smooth perpendicular sidewall profile, 80 V-AC is shown to actuate droplet of 1.5 mu l, 2.5 mu l, or 3.5 mu l to cross over the interface successfully.
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    Geometry-function relationships in meta-foils
    (2010-01-01)
    Moser, H. O.
    ;
    Jian, L. K.
    ;
    Chen, H. S.
    ;
    Kalaiselvi, S. M. P.
    ;
    Virasawmy, S.
    Meta-foils are all-metal free-standing electromagnetic metamaterials based on interconnected S-string architecture. They provide a versatile applications' platform. Lacking any substrate or embedding matrix, they feature arrays of parallel upright S-strings with each string longitudinally shifted by half an S compared to its neighbour to form capacitance-inductance loops. Geometric parameters include length a, width b, thickness t, and height h of an S, the gap between adjacent S-strings d, and the periodicity p of the interconnecting lines. Equidistant strings at p=1 form a 1SE meta-foil. Grouped in pairs of gap d, exhibiting a gap d(p) between pairs, they are named 2SP. Geometric parameters a, b, t, h, d, d(p), pS(E or P) and materials' properties like electric conductivity, Young's modulus, thermal expansion coefficient, and heat capacity determine the electromagnetic, mechanical, and thermal properties of meta-foils including the spectral dependence of resonance frequencies, refractive index, transmission, reflection, and bending. We show how the frequency and transmission of left-handed pass-bands depend on a, p, and d(p), the pSP geometry exhibiting higher resonance frequency and transmission. Equivalent circuit considerations serve to explain physical reasons. We also demonstrate mechanical behavior versus p and d(p) justifying the design of a cylindrical hyperlens depending on bent meta-foils.
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    Eco-Friendly and Biodegradable Biopolymer Chitosan/Y2O3 Composite Materials in Flexible Organic Thin-Film Transistors
    (2017-09-01)
    Du, Bo-Wei
    ;
    Hu, Shao-Ying
    ;
    Singh, Ranjodh
    ;
    Tsai, Tsung-Tso
    ;
    Lin, Ching-Chang
    The waste from semiconductor manufacturing processes causes serious pollution to the environment. In this work, a non-toxic material was developed under room temperature conditions for the fabrication of green electronics. Flexible organic thin-film transistors (OTFTs) on plastic substrates are increasingly in demand due to their high visible transmission and small size for use as displays and wearable devices. This work investigates and analyzes the structured formation of aqueous solutions of the non-toxic and biodegradable biopolymer, chitosan, blended with high-k-value, non-toxic, and biocompatible Y2O3 nanoparticles. Chitosan thin films blended with Y2O3 nanoparticles were adopted as the gate dielectric thin film in OTFTs, and an improvement in the dielectric properties and pinholes was observed. Meanwhile, the on/off current ratio was increased by 100 times, and a low leakage current was observed. In general, the blended chitosan/Y2O3 thin films used as the gate dielectric of OTFTs are non-toxic, environmentally friendly, and operate at low voltages. These OTFTs can be used on surfaces with different curvature radii because of their flexibility.
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    Square Column Structure of High Efficiency, Reliable, Uniformly Flexible LED Devices
    (2018-12-01)
    Lin, Chih-Hao
    ;
    Pai, Yung-Min
    ;
    Kang, Chieh-Yu
    ;
    Lin, Huang-Yu
    ;
    Lee, Chun-Fu
    This study demonstrates that flexible white LEDs, doped with diffusion particles and with a square column structure, have excellent luminosity, uniformity, and bending reliability. This large area (5 cm x 5 cm) square column flexible device had a smaller thickness (2 mm), and enhancements in both luminous efficiency (29.5%) and uniformity (44.6%) compared to the characteristics of the 6 mm reference sample. Optimization of the reflective layer coating for the square column, flexible white LED was achieved with a higher luminous efficiency (171 lm/w) and uniformity (92%). We designed a novel lightning bolt electrode to improve reliability and bendability. After the bending test, the blue flexible LED had a lower bending diameter (10 mm) but more bending circles (increased to 2000 times.
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    新穎多功能型之金屬氧化物半導體薄膜電晶體於軟性顯示技術的應用
    (2010)
    劉柏村
    ;
    LIU PO-TSUN
    ;
    國立交通大學光電工程學系（所）
    本計畫將利用三年時間，從功能元件、週邊驅動電路、進而延伸至軟性顯示等三大研究階段來完成「新穎多功能型之金屬氧化物半導體薄膜電晶體於軟性顯示技術的應用」的開發。金屬氧化物半導體具有高載子移動率、高透光率、製程簡單、以及低溫成膜等特性，使其在軟性顯示技術應用上具有極大的潛力與技術前瞻性。為了實現系統面板的目標，整合畫素薄膜電晶體元件與週邊功能電路（包含：驅動單元、記憶體元件與感測單元）的技術發展就顯得格外地重要。但由於各功能元件的製程與結構皆不盡相同，大幅增加整合製作的難度。因此本計畫預計開發金屬氧化物薄膜電晶體式的各類顯示週邊功能元件，可顯著降低製程與電路設計的複雜性，大幅提高低耗能系統面板整合技術實現的可行性。第一年我們將發展金屬氧化物薄膜電晶體式的光感測元件，開發出可偵測環境光亮度的光感測器元件，並將訊息回饋給顯示系統以控制顯示面板背光源的強度，進而達到節能之綠色顯示技術的目標。第二年的研究將著重於發展薄膜電晶體式的非揮發性記憶體元件並應用於畫素內建記憶體(Memory in Pixel；MIP)技術，同時也將於面板上開發畫素陣列週邊掃描驅動電路(Gate Driver on Array)。最後將前兩年所發展的各式元件關鍵技術應用於軟性顯示技術中，探討各種撓曲應力與形變對各功能元件的特性影響，並建立理論機制與模型，以期成功發展低耗能之功能整合型可撓式金屬氧化物薄膜電晶體顯示關鍵技術。
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    新穎具記憶能力之有機光電晶體之物理機制探討、感測能力提升、新結構發展以及在軟性光感測陣列之應用
    (2010)
    冉曉雯
    ;
    Zan Hsiao Wen
    ;
    國立交通大學光電工程學系（所）
    本計劃將以三年時間，深入研究有機光電晶體的原理，同時將結合有機光電 晶體和有機光二極體的感應原理，提出新型的有機光感應元件。本計劃將使用並 五苯環有機薄膜電晶體(OTFT)的製程架構，在第一年的研究中，將延伸本研究 群的先期研究，也就是我們已經發現利用電場調控可以使OPT具有很大的光靈敏 度(photo responsivity)，但是相關此效應的物理機制還需要更深入的分析與探討， 同時，從目前的研究成果看到，OPT的光靈敏度主要來自於光產生的電子被缺陷 捕捉，造成元件臨界電壓漂移，從而在固定閘極偏壓下，元件的光電流大幅上升。 然而，此缺陷捕捉效應具有很長的反應時間，這限制了OPT在快速光感測陣列中 的應用。因此本團隊將在第一年研究中，設計實驗深入探討OPT光感測的機制； 第二年開始進行製作本團隊提出的新穎元件結構，來大幅增加OPT的光感測速 度，也就是將在OTFT結構中加入donor-like和acceptor-like materials”異質介面”來 有效且快速的拆解照光產生的激子(exciton)，預期可以提出快速且靈敏的有機光 電晶體，同時，讓OTFT和OPT可以在單一製程上完成，大幅提升此技術的價值。 第三年的研究，將把此新穎結構延伸到結合有機半導體和無機非晶金屬氧化物材 料，形成hybrid phototransistor，預期利用無機非晶金屬氧化物的高電子遷移率， 可以更進一步提升元件反應速度，第三年研究也將結合OPT和OLED形成新穎靜 態存取記憶體(SRAM)。
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    Connecting interface for modularization of digital microfluidics - art. no. 68860L
    (2008)
    Yang, Hanping
    ;
    Fan, Shib-Kang
    ;
    Hsu, Wensyang
    ;
    機械工程學系
    ;
    Department of Mechanical Engineering
    Here, interconnection technique to link digital microfluidic chips is proposed. Three kinds of digital microfluidic modules with connecting interface, including flexible module and two types of connector modules, are designed and fabricated. Since these modules are fabricated on a compliant polymer-based substrate (ITO PET), chip-to-chip droplet transportation even at different planes can be achieved by the proposed technique. A low-temperature fabrication process is developed for the polymer substrates, where the SU-8 acts as the insulator. Droplet transportation through electrowetting on curved surface is confirmed by testing on the bended flexible modules with different curvatures from 0 to 0.06 mm(-1) at around 70 V-AC. Then the droplet transportations between flexible and connector modules are investigated. It is found that the gap size between two modules and the sidewall profiles at interface affect the droplet transportation directly. For the gap size around 50 mu m with a smooth perpendicular sidewall profile, 80 V-AC is shown to actuate droplet of 1.5 mu l, 2.5 mu l, or 3.5 mu l to cross over the interface successfully.
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    Toward Omnidirectional Light Absorption by Plasmonic Effect for High-Efficiency Flexible Nonvacuum Cu(In,Ga)Se-2 Thin Film Solar Cells
    (2014-09-01)
    Chen, Shih-Chen
    ;
    Chen, Yi-Ju
    ;
    Chen, Wei Ting
    ;
    Yen, Yu-Ting
    ;
    Kao, Tsung Sheng
    We have successfully demonstrated a great advantage of plasmonic Au nanoparticles for efficient enhancement of Cu(In,Ga)Se-2(CIGS) flexible photovoltaic devices. The incorporation of Au NPs can eliminate obstacles in the way of developing ink-printing CIGS flexible thin film photovoltaics (TFPV), such as poor absorption at wavelengths in the high intensity region of solar spectrum, and that occurs significantly at large incident angle of solar irradiation. The enhancement of external quantum efficiency and photocurrent have been systematically analyzed via the calculated electromagnetic field distribution. Finally, the major benefits of the localized surface plasmon resonances (LSPR) in visible wavelength have been investigated by ultrabroadband pump-probe spectroscopy, providing a solid evidence on the strong absorption and reduction of surface recombination that increases electron hole generation and improves the carrier transportation in the vicinity of pn-juction.
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    A Flexible Inductive Coil Tag for Household Two-Wire Current Sensing Applications
    (2012-06-01)
    Chen, Yung-Chang
    ;
    Yu, Sung-Chu
    ;
    Cheng, Shih-Hsien
    ;
    Cheng, Yu-Ting
    ;
    電子工程學系及電子研究所
    This paper presents a flexible inductive coil tag for sensing the electric current in the two-wire power cords of household goods. The tag is fabricated using a complementary metal-oxide semiconductor compatible SU-8 flexible technology which provides unique device characteristics of low-cost, reliability and pervasiveness. With a 30-turns coil design in an area of 0.5 x 1 cm(2), the coil tag can provide sensitivity of 18 and 21 mu V/A for detecting 50- and 60-Hz electric current in the ampere regime, respectively.
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    2.4 and 5.2 GHz dual-band antenna fabricated on flexible parylene membrane
    (2005-12-01)
    Huang, CU
    ;
    Chen, IY
    ;
    Chen, HJH
    ;
    Jou, CF
    ;
    Huang, SRS
    A 2.4 and 5.2 GHz dual-band monopole antenna fabricated on a flexible parylene membrane for Bluetooth and wireless local area network (WLAN) modules was designed and fabricated. The measured results show a good antenna performance and agree very well with the design simulations in both return loss and radiation characteristics. Parylene is a flexible polymer film; it can be deposited on various substrates and peeled off after completing device processes as stand-alone thin-and-flexible-substrate-containing devices. Owing to its excellent physical and chemical properties such as its low dielectric constant, light weight, low conductivity, and inertness to chemicals, parylene is also suitable for fabrication of many other RF devices.