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🏛️國立陽明交通大學機構典藏

Subject: search.filters.subject.Aluminum

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    Tuning the Characteristics of Surface Plasmon Polariton Nanolasers by Tailoring the Dispersion Relation
    (2017-01-01)
    Lu, Tien-Chang
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    Chou, Yu-Hsun
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    Hong, Kuo-Bin
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    Chung, Yi-Cheng
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    Lin, Tzy-Rong
    Nanolasers with ultra-compact footprint are able to provide high intensity coherent light, which have various potential applications in high capacity signal processing, biosensing, and sub-wavelength imaging. Among various nanolasers, those lasers with cavities surrounded with metals have shown to have superior light emission properties due to the surface plasmon effect providing better field confinement capability and allowing exotic light-matter interaction. In this talk, we report robust ultraviolet ZnO nanolaser by using silver (Ag) [1] and aluminum (Al) [2] to strongly shrink the mode volume. The nanolasers operated at room temperature and even high temperature (353K) shows several distinct features including an extremely small mode volume, large Purcell factor and group index. Comparison of characteristics between Ag-and Al-based will also be made.
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    Metal for Plasmonic Ultraviolet Laser: Al or Ag?
    (2017-11-01)
    Chou, Yu-Hsun
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    Hong, Kuo-Bin
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    Chung, Yi-Cheng
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    Chang, Chun-Tse
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    Chou, Bo-Tsun
    Surface plasmon polariton (SPP) nanolasers have recently emerged as promising candidates for generating a coherent light source in nanophotonic integration circuits. The properties of SPP nanolasers, such as group velocity, mode area, modulation speed, and threshold performance, can be manipulated using a dispersion relation. In this study, we investigated the characteristics of SPP nanolasers operated near and far from the SP frequency. Our results indicated that SPP nanolaser performance can be significantly influenced by manipulating the dispersion relation.
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    Low-Frequency Noise Performance of Al-Doped ZnO Nanorod Photosensors by a Low-Temperature Hydrothermal Method
    (2017-08-01)
    Wang, Zi-Hao
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    Yu, Hsin-Chieh
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    Yang, Chih-Chiang
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    Yeh, Hsin-Ting
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    Su, Yan-Kuin
    In this paper, we developed a simple hydrothermal method to synthesize vertically aligned ZnO:Al nanorods (NRs) to fabricate a UV photodetector (PD) on a seed layer/glass substrate. The photo-to-dark current ratio of the ZnO: Al NR PD was approximately 1.4 x 10(3) under 1-V bias and UV light irradiation (380 nm). The calculated responsivity of the fabricated PD was 181 A . W-1, and the UV-to-visible rejection ratio of the PD at 1-V applied bias was 1.51 x 10(3). In addition, flicker noise dominated the noise of the ZnO: Al NR PD. The noise-equivalent power and normalized detectivity of the ZnO:Al NR PD were 1.17 x 10(-11) W and 4.03 x 10(12) cm . Hz(0.5)W(-1), respectively.
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    Photoluminescence Determination of Aluminum Using Glutathione-Capped Gold Nanoclusters
    (2016)
    Baig, Mirza Muhammad Fahad
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    Chen, Cheng-Tai
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    Chen, Yu-Chie
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    應用化學系
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    Department of Applied Chemistry
    Aluminum is a common metal that is used extensively in daily life. However, over-exposure to aluminum may result in nervous systemrelated diseases. Thus, it is important to develop a rapid sensing method that can be used to screen samples. In this study, glutathione-capped gold nanoclusters with bright photoluminescence were demonstrated to be effective sensing probes for aluminum ions. The photoluminescence of glutathione-capped gold nanoclusters was enhanced in the presence of aluminum ions. The results show that glutathione-capped gold nanoclusters selectively determined aluminum ions in samples prepared in aqueous ammonium acetate buffer (pH 5.5). The acetate maintains the pH and serves as a chelating agent to interact with non-analyte metal ions. Therefore, other metal ions have little effect on the photoluminescence of the glutathione-capped gold nanoclusters. The photoluminescence of the glutathione-capped gold nanoclusters was switched on in samples containing aluminum ions. The selective sensing was based on chelation between the aluminum ions and ligands on the surface of the glutathione-capped gold nanoclusters. The limit of detection was estimated to be as low as approximately 100 nM. The method was used to determine the concentration of aluminum ions in lake water and soil extracts.
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    High-operation-temperature Aluminum-based SPP Nanolasers
    (2016)
    Chou, Yu-Hsun
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    Hong, Kuo-Bin
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    Chou, Bo-Tsun
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    Wu, Yen-Mo
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    Shih, Jheng-Hong
    Metal-insulator-semiconductor structures has widely adopted in plasmonics lasers. However, we found that the insulator is not necessary if permittivity combination of laser structures is properly designed. Single-mode laser operation was demonstrate in devices without artificial insulator layers. Moreover, the operation temperature can achieve to 353 K.
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    銅-鋁-(錳,鎳)和鐵-鋁-(錳,鎳)合金相變態研究
    (1995)
    劉增豐
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    LIU TZENG-FENG
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    國立交通大學材料科學工程研究所
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    化學氣相沈積氮化鈦和鋁在極大型積體電路金屬連線之先導性研究
    (1995)
    蘇翔
    ;
    國立交通大學電子工程研究所
    本計畫以用化學氣相沈積方式作氮化鈦和 鋁的金屬化為研究主旨,氮化鈦在極大型積體 電路製程中用來防止鋁的擴散,作淺接面的接 觸.傳統方式鍍氮化鈦是用活性濺鍍(Reactivesputtering),也即用Ar離子來撞擊鈦,在反應腔內通 以氮氣,所以在沈積過程中就形成了氮化鈦,這 種方式在接觸洞(Contacthole)大於0.35微米時,尚 可應付所需,但小於0.35微米時,金屬與矽接觸的 可靠性就不敷所求,而化學氣相沈積最大的特 色就是Comformality,其Step coverage的能力不是用濺 鍍可相比的.所以本計畫研究的第一個目標是 用低壓化學氣相沈積設備來形成氮化鈦,所用 的原料有兩種,均為液態,用Carrier gas帶入反應腔以作沈積,原料為TDEAT和TDMAT,其沈積物理與電 性,將在本計畫作詳細分析,選用此種原料主要 原因是在沈積溫度450.degree.C以下仍有合理的沈 積率以便這種技術可適用於多層金屬連線的VIA ,基於同樣理由,用濺鍍方式無法達成鋁在接觸 洞的Step coverage需求,尤其是接觸洞的尺寸小於 0.25微米 而Aspect ratio又大於1.6時,化學氣相沈積 幾乎勢在必行,所以在化學氣相沈積氮化鈦之 後,再用化學氣相沈積鋁是一很自然的趨勢.本 計畫第二目標即為研究鋁化學氣相沈積之特性 .所用的原料也為液體,計畫選兩種原料作實驗, 利用蒸氣壓夠高,才能產生合理的沈積率,原料 為TIBAL和DMA1H,研究重點為物性、電性和元件製 程之相容性.其中以DMA1H最具潛力,因為它具有 選擇性沈積於金屬或矽的能力.在本計畫將對 鋁的選擇性沈積作一探討,本計畫以先期性研 究下一代極大型積體電路金屬連線和接觸技術 ,期望不僅在學術上對金屬化學沈積有所了解, 而且寄望在此領域對我國積體電路工業有所貢 獻.
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    Characterization of Hot Cracking Due to Welding of High-Strength Aluminum Alloys
    (2012)
    Chang, C. C.
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    Chen, C. L.
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    Wen, J. Y.
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    Cheng, C. M.
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    Chou, C. P.
    The "Spot-Varestraint Test'' was applied to assess the sensitivity of three aluminum alloys-A2024-T351, A2219-T87, and A7050-T6 to hot cracking from welding. The results indicate that the number of cracks increases with increasing augmented strain. This phenomenon occurs in both the fusion and the heat-affected zones. The number of thermal cycles also has a significant influence on the heat-affected zone; the number of hot cracks increases, especially in the heat-affected zone of the metal weld, with increasing number of thermal cycles. The compositions of these three alloys show that A2024 and A7050 have similar tendencies to be subject to hot cracking, greater than A2219. With increasing number of thermal cycles, the hot cracks show the same tendency, A2024 > A7050 > 2219.