Browsing by Issue Date, starting with "1994-12-15"

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INFLUENCE OF SURFACE EXCITATIONS ON ELECTRONS ELASTICALLY BACKSCATTERED FROM COPPER AND SILVER SURFACES
(1994-12-15)
CHEN, YF
;
SU, P
;
KWEI, CM
;
TUNG, CJ
;
電子工程學系及電子研究所
STUDY OF THE LOSS OF PATTERN DEFINITION IN DIAMOND GROWTH
(1994-12-15)
CHEN, CF
;
CHEN, SH
;
交大名義發表
;
材料科學與工程學系
;
National Chiao Tung University
Selectivity loss (i.e. deposition on a mirror-smooth finished silicon surface) during diamond film growth using a selective deposition technique was investigated. CH4-CO2 gas mixtures without supplying hydrogen were used to enhance the nucleation density. After pattern generation and ultrasonic agitation pretreatment, the Si substrates were dipped into a solution of HF:HNO3:H2O (1:1.1:10) for various lengths of time to increase the pattern definition during the second period of diamond film growth. It was found that the selectivity loss in the diamond films could be significantly reduced by increasing the dipping time. The nuclei formed in the nucleation step were etched using the above solution, which reduced the selectivity loss. Scanning electron microscopy and electron spectroscopy for chemical analysis were used to examine the selectivity loss and morphological change of the as-grown diamond films. It was also found that a higher CH4 concentration resulted in a high selective loss of diamond growth.
大寂之氅
(1994-12-15)
管管
大寂之氅
(1994-12-15)
管管
大寂之氅
(1994-12-15)
管管
大寂之氅
(1994-12-15)
管管
COMPARISON OF CHEMICAL-VAPOR-DEPOSITION OF TIN USING TETRAKIS-DIETHYLAMINO-TITANIUM AND TETRAKIS-DIMETHYLAMINO-TITANIUM
(1994-12-15)
SUN, SC
;
TSAI, MH
;
交大名義發表
;
奈米中心
;
National Chiao Tung University
The attributes and limitations of chemically vapor-deposited titanium nitride films from the reaction of tetrakis-diethylamino-titanium with ammmonia and tetrakis-dimethylamino-titanium with ammonia are discussed. Deposited films were characterized by growth rate, resistivity, surface morphology and step coverage over contact structures. Films deposited without ammonia flow were unstable in the atmosphere and Auger analysis showed a higher relative carbon content. It was found that the deposition pressure had a stronger effect than did the deposition temperature on the bulk resistivity and surface roughness. A higher pressure has a tendency to reduce the resistivity. Films appear smooth at low deposition temperatures and low pressures. Films become rough at high deposition temperatures and high pressures. The deposition process and resulting TiN layers are successfully integrated in a chemcially vapor-deposited W plus fill application.
OPTICAL CHARACTERIZATION OF DIAMOND SYNTHESIZED USING CH4-CO2 GAS-MIXTURES WITHOUT SUPPLYING HYDROGEN GAS
(1994-12-15)
CHEN, CF
;
CHEN, SH
;
HONG, TM
;
LEU, JS
;
交大名義發表
Diamond films are the optical choice for IR window applications. Polycrystalline diamond films were synthesized in this study by microwave-plasma-assisted chemical vapour deposition (PACVD) using CH4 + CO2 as reactive gases. The primary purpose of this study is to determine the effect of the deposition conditions on the optical properties of PACVD diamond films. Room temperature optical properties of free-standing diamond films were studied by Fourier transform IR spectroscopy. Experimental results indicate that the refractive index of diamond films is comparable with that of natural diamond. The scattering loss caused by the rough surface of as-grown diamond film was reduced using a two-step process and polishing techniques. The resulting reduction in scattering loss increased the transmission intensity. For low temperature deposited diamond film the intensity of absorption due to carbon-hydrogen stretch bands was higher than that for film deposited at a high temperature. IR spectra are fitted with simulated spectra to determine the background absorption caused by the amorphous carbon contained in the films. Additionally, the background absorption of low temperature deposited diamond film was found to be larger than that of a diamond film deposited at 850 degrees C.
ELECTRICAL CHARACTERIZATION OF ARSENIC-ION-IMPLANTED SEMIINSULATING GAAS BY CURRENT-VOLTAGE MEASUREMENT
(1994-12-19)
LIN, GR
;
CHEN, WC
;
CHANG, CS
;
PAN, CL
;
光電工程學系
DOUBLE RESONANT BEHAVIOR OF MICROSTRIP RING-RESONATOR IN TL-BASED HIGH T-C SUPERCONDUCTING FILMS
(1994-12-19)
WU, SC
;
YEH, CY
;
CHEN, FH
;
TSENG, TY
;
WANG, C
華文詩人筆會在深圳舉行
(1994-12-19)
莊子
THE PATH-PARTITION PROBLEM IN BLOCK GRAPHS
(1994-12-23)
YANG, JH
;
CHANG, GJ
;
應用數學系
;
Department of Applied Mathematics
We present a linear-time algorithm for the path-partition problem in block graphs.
Study of Schottky barriers on n-type GaN grown by LP-MOCVD
(1995)
Guo, JD
;
Feng, MS
;
Pan, FM
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
Identification of fault types for single faults in bitonic sorters
(1995)
LEE, TH
;
CHOU, JJ
;
電信工程研究所
;
Institute of Communications Engineering
快速向量量化搜尋方法
(1995)
陳玲慧
;
CHEN LING-HWEI
;
國立交通大學資訊科學研究所
超快光學與光電子學之研究---子計畫四：超快量測技術之研究
(1995)
吳小華
;
WU HSIAO-HUA
;
國立交通大學光電工程研究所
本計畫將以短脈衝雷射結合各種光學與光電子技術來進行超快速量測的研究.首先,利用互相干及光電子鎖相技術來建立自鎖模摻鈦藍寶石雷射與增益交換半導體雷射之間的時序同步或相位一致.這些雷射結合光學取樣及內部或外部電光取樣技術來測量增益交換半導體雷射、快速半導體元件與微波及毫米波電路的特性.最後,也對超快掃描探測顯微技術進行初步的研究,以發展同時具有極高時間與空間解析度的量測技術.
上海新世紀廣場〔遊龍戲珠〕景觀雕塑設置案（1995）
(1995)
不詳
此為〔遊龍戲珠〕小件雕塑模型，高28cm、寬37cm、深25cm，預定置於上海虹橋區新世紀廣場噴泉中央。楊英風設計構想是以不銹鋼明淨樸實的特質、現代資訊精華的磁帶造型，表現蛟龍遨遊太虛之活潑意趣，用來傳達上海商貿都會介於傳統與現代之間，熠熠生輝的閃亮明珠。
THERMAL-STABILITY OF 2ND-ORDER NONLINEARITY IN POLED POLYMERIC FILMS
(1995-01-01)
HUANG, JY
;
LIAO, CL
;
WHANG, WT
;
CHANG, CJ
;
材料科學與工程學系
The thermal stability of the poled polar order of nonlinear optical (NLO) chromophores covalently appended to the main chain of polymeric films was studied by measuring the generated optical second-harmonic signal over a wide range of temperatures. Our results provide insight into the relationship of the thermal stability of the poled order with chemical bonding and elastic interaction of the NLO chromophores in polymeric matrices.
文件分析與文字辨識系統之研究---子計畫五：知識導引筆劃和部首抽取的改良研究與其在線上手寫文字辨識的應用
(1995)
李錫堅
;
國立交通大學資訊工程學系
本計畫將針對我們原先建立完成的文字辨識系統作細部的改良以進行對較潦草文字的辨認.我們的工作可粗分為三部分:筆劃抽取的改良、字根抽取與字根組成文字的改良和將系統由離線(Off-line)擴充應用在線上(On-line)手寫中文字的辨識.在筆劃抽取方面,由於我們設計的筆劃抽取模組條件寬鬆,以致於除了正確的筆劃之外仍有很多不正確的多餘筆劃在其中.筆劃數目太多的緣故,使得在字根抽取的過程,速度與結果均大受影響.我們將利用一些知識特徵(Knowledge-features),在原有的筆劃抽取結果中, 去除不正確的筆劃,而保留正確的筆劃.本計畫也將特別處理圓弧狀的曲線.在字根抽取與辨識方面,我們已定義了約五百個左右的字根來涵蓋所有可能的中文文字,每個字根利用二階線上模式(Second-order on-line model)來定義其所含筆劃之種類與筆劃間的相互關係,然後利用模式導引的比對法.本計畫將配合一些知識特徵, 為每一個輸入的文字找到數個較為可靠的候選字根(Candidate radicals)也將在檢驗這些候選字根的合法性,去除一些經知識特徵檢驗不合格者. 剩下的候選字根再利用求最大完整圖的求取方式,指出最佳的組合,而組成中文字.利用我們所提出的離線文字辨識系統于線上系統使用時, 僅須改寫筆劃抽取的部分.以線上的方式作輸入,抽取出的筆劃數目將可獲得很大的改善,配合原先離線系統的比對方式,再加上線上額外資訊的輔助,將可完成輸入無限制、效果也錯不的線上文字辨識系統.
慈悲（二）
(1995)
楊英風
此作係楊英風以一九五五年慈悲（一）之造型為基礎，一九九五年重新用電腦合成創作後的二次結晶。這件作品，可說反映了楊英風當時佛像造像藝術的幾項基本特色。畫面左方之佛頭像，為當時楊英風進行〔仿雲岡石窟大佛〕（一九五五）的造型特色：方頭大耳、高鼻大眼，予人飽滿渾厚的感覺。畫面中間下方正是楊英風於一九五三所作銅雕〔悵惘〕之造型，代表世間凡人；畫面右方之佛頭像，為一九五六年〔仰之彌高〕之佛像造型，臉型加以拉長變形，造成清秀剛直的美感。由於最初作者著重於中國魏晉造型美學的嚮往，因此將之命名為〔思古幽情〕，後來，漸漸深入理解佛學思想，因此將原提名改為〔慈悲〕。三具頭像以簡潔的線條勾勒出輪廓，在畫面上構成了具結構性的現代造型美感。