Browsing by Issue Date, starting with "1994-12-10"

Now showing 1 - 20 of 87983

SUBSTRATE-MODE HOLOGRAPHIC POLARIZATION-DIVISION MULTI/DEMULTIPLEXER FOR OPTICAL COMMUNICATIONS
(1994-12-10)
CHANG, JT
;
SU, DC
;
HUANG, YT
;
電子工程學系及電子研究所
;
光電工程學系
Based on the diffractive properties of a transmission-type phase volume hologram, a new type of polarization-division multi/demultiplexer for optical communications is presented.
THE PHOTOELECTRON ENERGY-SPECTRA OF THE ABOVE-THRESHOLD IONIZATION OF ATOMIC-HYDROGEN
(1994-12-14)
HAN, CS
;
交大名義發表
;
電子物理學系
;
National Chiao Tung University
;
Department of Electrophysics
The above-threshold photoelectron energy spectra of the hydrogen atom in an intense field are calculated by solving the Schrodinger equation in momentum space, which facilitates the extraction of the rapidly varying part of the wavefunction. It is found that the peak switching and the suppression of low-energy peaks in the above-threshold ionization is clearly manifested in this theory. We found that the apparent threshold shifts of the ATI peaks are strongly dependent on the final continuum state. The frequency dependence of the energy spectrum is also investigated.
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.