Browsing by Issue Date, starting with "2005-07-11"

Now showing 1 - 20 of 66351

利用法布里-珀羅（Fabry-Perot）雷射二極體之快速波長可調雷射系統
(2005-07-11)
祁甡
;
李健仲
;
葉建宏
本發明揭示一種以多模波長輸出的法布里-珀羅(Fabry- Peiot)雷射二極體作為外部注入光源及共振腔來達成快速波長可調之雷射系統，其中波長可調之功能可藉由改變控制外注入式多模法布里-珀羅(Fabry-Perot)雷射二極體最大光增益的偏壓而取得波長的反覆切換，藉此系統，可在3.5奈米(nm)波長範圍內選取3個不同的波長，且其旁模壓抑比(Side-Mode Suppression Ratio)可大於19dB，其波長切換時間亦可達到奈秒(ns)的等級。
以快速升溫方式成長之氧化層
(2005-07-11)
張國明
;
楊文誌
本發明係為一以快速升溫方式成長之氧化層，利用快速升溫爐(RTP)系統，將溫度快速升溫到900度後，以不同氣流速率的氮氣與氧氣通入RTP系統中，形成一高氮低氧濃度的環境，進行15秒的氮氧化製程，可於矽晶圓上成長出厚度僅為1nm的氮氧化矽薄膜，其漏電流可降低至0.1A/cm2，比傳統的RTO oxide漏電流低約1~2個次序(orders)，並具有較佳的可靠度，可應用於晶圓及半導體等相關產業。
結合固態浸沒式透鏡與奈米微孔之製造方法及其裝置
(2005-07-11)
徐文祥
;
周學良
;
田仲豪
本發明有關一種結合固態浸沒式透鏡與奈米微孔之製造方法及其裝置，包括在一基板上沈積一犧牲層，塗佈光阻於該犧牲層上且利用微影技術在該光阻上形成一微孔，再施以該光阻回流及蝕刻去除該微孔下方之犧牲層，然後在該光阻上沉積一導電材料及執行電鍍以縮小該微孔之孔徑，接著塗佈另一光阻及利用微影技術在該微孔上方形成一柱狀光阻結構，再使該柱狀光阻高溫回流而形成一微透鏡，最後去除該基板以獲得一結合固態浸沒式透鏡與奈米微孔之光學讀/寫裝置。
Optical fiber-fault surveillance for passive optical networks in S-band operation window
(2005-07-11)
Yeh, CH
;
Chi, S
;
光電工程學系
;
Department of Photonics
An S-band ( 1470 to 1520 nm) fiber laser scheme, which uses multiple fiber Bragg grating (FBG) elements as feedback elements on each passive branch, is proposed and described for in-service fault identification in passive optical networks (PONs). By tuning a wavelength selective filter located within the laser cavity over a gain bandwidth, the fiber-fault of each branch can be monitored without affecting the in-service channels. In our experiment, an S-band four-branch monitoring tree-structured PON system is demonstrated and investigated experimentally. (C) 2005 Optical Society of America.
A broadband fiber ring laser technique with stable and tunable signal-frequency operation
(2005-07-11)
Yeh, CH
;
Chi, S
;
光電工程學系
;
Department of Photonics
A C- plus L-band fiber ring laser with wide wavelength tunability and single-longitudinal- mode oscillation is proposed and demonstrated experimentally. A saturable-absorber-based autotracking filter, consisted of an unpumped erbium-doped fiber (EDF) and an optical reflected mirror (ORM), is employed to provide fine mode restriction and guarantee the single-frequency operation. Output power of >2.1 dBm, power stability of <= 0.02 dB, wavelength variation of <= 0.01 nm and side-ode suppression ratio (SMSR) of >31 dB / 0.05 nm have been experimentally demonstrated for this single-frequency fiber laser over an operating range of 1550 to 1608 nm. (C) 2005 Optical Society of America.
Ultrafine platinum nanoparticles uniformly dispersed on arrayed CNx nanotubes with high electrochemical activity
(2005-07-12)
Sun, CL
;
Chen, LC
;
Su, MC
;
Hong, LS
;
Chyan, O
The structure and electrochemical properties of arrayed nitrogen-containing carbon nanotube (CN, NT)-platinum nanoparticle (Pt NP) composites directly grown on Si substrates have been investigated. The CN., nanotube arrays were grown by microwave-plasma-enhanced chemical vapor deposition first and then acted as the template and support for Pt dispersion in the following sputtering process. Under the same sputtering conditions, it was found that well-separated Pt NPs would form with an average diameter of 2 nm on the arrayed NTs while a continuous Pt thin film was observed on the bare Si substrate. X-ray photoelectron spectroscopy (XPS), X-ray diffraction, and electron microscopy were employed to study bonding and structure changes with increasing deposition time. Implications of the C1s and N1s bonding changes in XPS and their possible relation to the NT-Pt composite structures with self-limited size distribution are discussed. Cyclic voltammograms show well-behaved curves in methanol oxidation, suggesting an efficient electronic conduction mechanism from the substrate via CN, NTs to reach individual Pt NPs is in operation. Such an integrated nanocomposite approach possesses a high potential for micro direct methanol fuel cell applications.
Covalently bonded polyhedral oligomeric silsesquioxane/polyimide nanocomposites and process for synthesizing the same
(2005-07-14)
Wei, Kung-Hwa
;
Leu, Chyi-Ming
Polyhedral oligomeric silsesquioxane/polyimide nanocomposites with certain mechanical properties and low dielectric constant is synthesized by covalently tethering functionalized polyhedral oligomeric silsesquioxane molecules to polyimide. These nanocomposites appear to be self-assembled systems. A process for synthesizing said polyhedral oligomeric silsesquioxane/polyimide nanocomposites also is provided, comprising a step of forming porous type polyhedral oligomeric silsesquioxane, and a subsequent step of reacting with dianhydride or directly reacting with synthesized polyimide.
Fabrication of complex fiber grating structures by use of sequential writing with polarization control
(2005-07-14)
Chuang, Kai-Ping
;
Sheu, Lih-Gen
;
Tsai, Meng-Chang
;
Lai, Yinchieh
The present invention provides a fabrication method of complex fiber grating structures that can be combined with prior fabrication methods including a phasemask or a two-beam interferometer. By using a rotatable half-wave plate with a polarization beam splitter in the optical path and precisely scanning the relative fiber position, we can expose true complex fiber gratings in a single scan by simultaneously rotating the angle of the half-wave plate.
Fabrication of true apodized fiber bragg grating using a new two-beam interferometer with polarization control
(2005-07-14)
Chuang, Kai-Ping
;
Sheu, Lih-Gen
;
Tsai, Meng-Chang
;
Lai, Yinchieh
The present invention provides a two-beam interference exposure system that can be simply adjusted by rotating only one mirror. By placing a half-wave plate in one of the interference arms and precisely scanning the relative fiber position, the present invention can expose true apodized fiber Bragg gratings in a single scan by simultaneously rotating the angle of the half-wave plate. By rotationally switching the fast and slow axes of the half-wave plate, the present invention can also expose n-phase-shifted fiber grating by the same system.
警衛隊新舊任隊長交接典禮
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
時間：94年7月1日地點：行政大樓一樓會議室
公告 ─ 全家便利商店修正暑假營業時間
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
＜保管組／提供＞設於本校之全家便利商店暑假期間營業時間修正為週一至週五：8：00 AM ～ 7：00 PM，週六：8：00 AM ～ 4：00 PM，週日不營業，自94年7月9日起實施.....
Time-resolved spin filtering in semiconductor symmetric resonant barrier structures
(2005-07-15)
Yu, L
;
Voskoboynikov, O
;
交大名義發表
;
National Chiao Tung University
Spin-dependent tunneling in semiconductor symmetric double barrier structures is studied theoretically. Our calculation is based on the effective one-band Hamiltonian and Dresselhaus spin-orbit coupling. We demonstrate that the ratio of the tunneling times of electrons with opposite spin orientations can vary over a few orders in magnitude. The large and tunable ratio of the tunneling times can serve as the basis in the development of all-semiconductor dynamic spin filters. (c) 2005 American Institute of Physics.
艷夏．夏艷
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
在艷陽高照下，七月份隨著第一梯次的教職員工文康活動，到花蓮旅遊三天，為平日忙碌的生活注入不少清新的活力泉源，也為未能成行的同仁們帶回一些影像及趣聞，共享此行的歡樂片段。
實驗動物中心主任交接典禮
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
時間：94年6月30日下午4:30~ 地點：實驗動物中心會議室
榮總台灣聯合大學個別型研究計畫開始接受申請
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
＜研究發展處／提供＞95年度榮總台灣聯合大學個別型研究計畫（執行期限自95年1月1日至95年12月31日）自94年7月4日起開始接受申請，欲申請之教師，請於7月28日前至網站線上申請，並於上傳後通知研發處，詳如說明，敬請轉知所屬查照.....
享受義大利
(國立陽明大學, 2005-07-15)
左智慧
旅行作家黃威融說：在這個世界上，有很多東西並不一定是需要，但也非完全不需要，例如旅行，愛情。旅行，對工作忙碌的我來說，是一種奢侈的享受，但絕對是需要的。因為旅行可以使我暫時放下壓力，開闊生命視野，重新得著工作的活力與對人的熱情
Microstructural investigation of hexagonal-shaped diamond nanoplatelets grown by microwave plasma chemical vapor deposition
(2005-07-15)
Lu, CA
;
Chang, L
;
材料科學與工程學系
;
Department of Materials Science and Engineering
Diamond crystallites in hexagonal-shaped nanoplatelet morphology were synthesized in microwave plasma chemical vapor deposition (MPCVD) system using a CH4/H-2 gas mixture with a ratio of 0.667%. Diamond nanoplatelets were deposited on (10 0) silicon substrate. The substrate was embedded within the plasma ball close to its center where the high temperature above 1100 degrees C was reached during the deposition. Surface morphologies and crystalline characteristics of the deposited diamond were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM and TEM observations clearly show that the diamond nanoplatelets exhibit hexagonal-shaped morphologies, and the thickness and the length are measured to be around 20-30nm and several hundred nanometers, respectively. Also, SEM shows that the distribution of the nanoplatelet density gradually increases from the center to the corner of the sample. TEM with selected area electron diffraction shows that each platelet is a single crystalline diamond. Both (1 1 0) and (1 1 1) orientations of the diamond platelets are observed. (c) 2005 Elsevier B.V. All rights reserved.
95年度「生物多樣性人才培育先導型計畫」計畫構想書徵求
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
＜教務處／提供＞計畫說明及構想書格式請至http://140.127.11.121/diversity/ 下載。有意申請者，請於七月二十二日前檢送計畫構想書擲交教務處陳核彙辦.....
93學年度第6次(擴大)行政會議
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
時間：94年6月22日(星期三)上午9時整地點：本校會議中心第2會議室
招募志工─「天助康復計畫」，找回陽明的人文關懷
(國立陽明大學, 2005-07-15)
陽明電子報編輯小組
前一陣子在報紙上聽到有關清大吳守益的消息，我們一則以喜、一則以憂。喜的是天助還是有希望：日前去看他，他已經能用左手寫字、右手也能感覺到東西而且更開心的是右手已經可以舉到肩膀的地方、也可以在媽媽的攙扶下用自己的兩隻腳走路。可見肢體的復原情況很不錯。另一方面憂心的是：腦傷的黃金治療期大概是一年，倘若依此來計算，天助的時間只剩下八個月。目前他整合的能力還是不夠，而且他開始也會急、一急就會忘。像復健師出的作業「理髮師在理髮廳工作」他會唸然後可以用左手一筆劃一筆劃寫下來。可是有時候他會把「髮理」以為是「理髮」。而且也還不太會判讀時間