Browsing by Issue Date, starting with "2014-08-11"

Now showing 1 - 20 of 25819

視訊監控方法
(2014-08-11)
洪一平
;
洪晟峰
;
施朝欽
;
陳冠文
本發明提供一種視訊監控方法，包括：從一影像獲得一第一邊緣點，將該第一邊緣點二值化以決定一第二邊緣點；計算該第二邊緣點之一亂度與一亂度閾值；根據該亂度閾值過濾該第二邊緣點中亂度高之邊緣點，以獲得一第三邊緣點，經由對該第三邊緣點取樣來構成一背景影像；根據該背景影像比對一新取樣邊緣點，以獲得一非背景比例；以及當該非背景比例大於預設之一第一閾值時，將一特定影像事件發生前後之二影像，各分割成由複數個邊緣區塊所構成之二結構影像，並計算該二結構影像之該些邊緣區塊之一一致比例，當該一致比例低於之一預設匹配閾值時，則發出一警報。本發明採取二階段式偵測，能在複雜的環境下，偵測出是否有人為蓄意破壞，並能有效降低環境變化產生的誤報機率。
半導體發光元件
(2014-08-11)
王朝勳
;
李鎮宇
;
郭浩中
本發明揭露一種半導體發光元件，其包含：基板，具有第一表面及一第二表面；第一半導體導電層，設置在基板之第一表面上；插入層，設置在第一半導體導電層上；主動層，設置在插入層上；第二半導體導電層，設置在主動層上；第一電極，設置在第二半導體導電層上；及第二電極，設置在基板之第二表面上，且其第二電極之電性與第一電極之電性相反。由於插入層係為具有層寬能隙的材料層，可以同時作為電子阻擋層與電洞注入層，以此插入層取代電子阻障層，不僅能夠使價電帶的能障降低，讓電洞更容易注入主動層內而與電子復合發光，且能阻檔電子溢流，以增加半導體發光元件的發光效率。
以分層掃描法實現即時人數計數
(2014-08-11)
林道通
;
莊東翰
本案提出一種以分層式掃描法來計數標的數量之方法。本方法包括建立背景、過濾前景圖之雜訊並將標的予以分組，接著以分層掃描及篩選標的面積，由最高位置判定標的及其數量，此外，並以演算法計算標的之動態數量。因此，本案能自動化地、有效地且精確地計數進出該區域空間之標的數量，達到流量管制及減少人為誤差。
Optimal detection angle in sub-diffraction resolution photothermal microscopy: application for high sensitivity imaging of biological tissues
(2014-08-11)
Miyazaki, Jun
;
Tsurui, Hiromichi
;
Kawasumi, Koshi
;
Kobayashi, Takayoshi
;
電子物理學系
We evaluated the optimal detection angle for maximizing the signal to noise ratio (SNR) in sub-diffraction resolution photothermal microscopy. The angular dependent photothermal signal was calculated based on scattering theory using the temporally modulated Yukawa potential, and its detection angle and modulation frequency dependencies were analyzed. We verified the theoretical findings by imaging gold nanoparticles using laser diode based photothermal microscopy with balanced detection scheme. High-sensitivity (SNR similar to 40) photothermal biological imaging of a mouse brain was also demonstrated.
移動參數估計方法、角度估計方法及判斷方法
(2014-08-11)
黃崇榮
;
戴家威
;
蔡宗育
;
李大嵩
一種移動參數估計方法、角度估計方法及判斷方法，適於電子裝置。所述角度估計方法包括下列步驟。首先，發送第一調頻連續波信號，並由至少一天線接收目標物反射第一調頻連續波信號而形成的第二調頻連續波信號。接著，依據第一調頻連續波信號以及第二調頻連續波信號獲得關聯於目標物的多個移動參數。之後，依據所述多個移動參數以及各天線的組態參數而獲得對應於各天線的多個量測值。繼之，將所述多個量測值代入數學式，以獲得電子裝置的預設方向與目標物之間的估計角度。
數位式線性電壓調變器
(2014-08-11)
謝維致
;
黃威
本發明係關於一種可輸出一調變電壓、具有高電流效率及可整合至各式晶片中的數位式線性電壓調變器。其包括：至少一數位誤差偵測電路模組、一第一控制邏輯電路模組、一第二控制邏輯電路模組、一模式指示模組、一分壓器電路模組、至少一上推元件電路模組以及下拉元件電路模組。其中，至少一數位誤差偵測電路模組係依據一介於一比較電壓與一參考電壓之間的電壓差值輸出一邏輯信號，第一控制邏輯電路模組與第二控制邏輯電路模組則分別控制至少一上推元件電路模組及下拉元件電路模組，以輸出前述之調變電壓。
Optimal detection angle in sub-diffraction resolution photothermal microscopy: application for high sensitivity imaging of biological tissues
(2014-08-11)
Miyazaki, Jun
;
Tsurui, Hiromichi
;
Kawasumi, Koshi
;
Kobayashi, Takayoshi
;
電子物理學系
We evaluated the optimal detection angle for maximizing the signal to noise ratio (SNR) in sub-diffraction resolution photothermal microscopy. The angular dependent photothermal signal was calculated based on scattering theory using the temporally modulated Yukawa potential, and its detection angle and modulation frequency dependencies were analyzed. We verified the theoretical findings by imaging gold nanoparticles using laser diode based photothermal microscopy with balanced detection scheme. High-sensitivity (SNR similar to 40) photothermal biological imaging of a mouse brain was also demonstrated. (C) 2014 Optical Society of America
顯示裝置之驅動電路
(2014-08-11)
劉柏村
;
竹立煒
;
林俊傑
;
楊孟娟
;
施均融
本發明為一種顯示裝置之驅動電路，其包含一第一控制單元、一第一充放電單元、一第二控制單元與一第二充放電單元。第一控制單元依據一第一輸入訊號、一二輸入訊號與一第一時脈訊號產生一第一控制訊號，第一充放電單元依據第一時脈訊號、第二時脈訊號與第一控制訊號產生一第一輸出訊號，第二控制單元依據第一控制訊號、第一輸出訊號與第二時脈訊號產生一第二控制訊號，第二充放電單元依據第一時脈訊號、第二時脈訊號與第二控制訊號產生一第二輸出訊號。藉由第一控制訊號與第一輸出訊號提高第二控制單元之第二控制訊號之電壓值，以讓第二充放電單元加快充放電時間並提高第二輸出訊號之電流值。
Time-reversal-based impact-localization and haptic-feedback method for touch panels
(2014-08-12)
Bai Mingsian R.
;
Tsai Yao Kun
The present invention provides a time-reversal-based impact-localization and haptic-feedback method for touch panels. Firstly, a plate model for an elastic plate and the impulse responses thereof are constructed according a plate theory. Next, a mathematical model is established according to the impulse responses and a time-reversal approach. When an impact force hits the elastic plate, the touched point on the elastic plate generates a touch signal, and the touch signal is received by at least a sensor at the corner of the elastic plate. The touch signal is converted into a time-reversal signal according to the mathematical model by a simulator. The time-reversal signal is reversed to the touched point for simulating reversal vibration waves of the time-reversal signal on the elastic plate, and locating the touched point.
Fabrication of Polymer Nanopeapods in the Nanopores of Anodic Aluminum Oxide Templates Using a Double-Solution Wetting Method
(2014-08-12)
Chen, Jiun-Tai
;
Wei, Tzu-Hui
;
Chang, Chun-Wei
;
Ko, Hao-Wen
;
Chu, Chien-Wei
Although one-dimensional polymer nanomaterials can be prepared by approaches such as the template method, the control over the morphologies of one-dimensional polymer nanomaterials containing multiple components is still a great challenge. In this work, we investigate the formation of polymer nanopeapods using a novel double-solution wetting method in the nanopores of anodic aluminum oxide (AAO) templates. A polystyrene (PS) solution in dimethylformamide (DMF) is first introduced into the nanopores of the AAO templates. Then a second polymer solution of poly(methyl methacrylate) (PMMA) in acetic acid is infiltrated into the nanopores. Because of the stronger interaction between acetic acid and aluminum oxide than that between DMF and aluminum oxide, the PMMA solution preferentially wets the pore walls of the templates and the PS solution is isolated in the center of the nanopores. After the evaporation of the solvent, peapod-like PS/PMMA nanostructures are obtained, where the shell and the core are composed of PMMA and PS, respectively. The compositions of the polymer nanopeapods are confirmed by removing PS or PMMA selectively. The formation mechanism of the nanostructures is related to the Rayleigh-instability-type transformation and further studied by changing experimental parameters such as the polymer concentration or the polymer molecular weight. This work not only provides a simple approach to prepare multicomponent polymer nanomaterials with controlled morphologies and sizes, but also contributes to a deeper understanding of polymer solvent-interactions in confined geometries.
Oscillato based on a 6T SRAM for measuring the bias temperature instability
(2014-08-12)
Chuang Ching-Te
;
Jou Shyh-Jye
;
Hwang Wei
;
Tsai Ming-Chien
;
Lin Yi-Wei
The present invention provides an oscillator which is based on a 6T SRAM for measuring the Bias Temperature Instability. The oscillator includes a first control unit, a first inverter, a second control unit, and a second inverter. The first control unit is coupled with the first inverter. The second control unit is coupled with the second inverter. The first control unit and the second control unit is used to control the first inverter and the second inverter being selected, biased, and connected respectively, so that the NBTI and the PBTI of the SRAM can be measured separately, and the real time stability of the SRAM can be monitored immediately.
Porphyrin-Incorporated 2D D-A Polymers with Over 8.5% Polymer Solar Cell Efficiency
(2014-08-13)
Chao, YI-Hsiang
;
Jheng, Jyun-Fong
;
Wu, Jhong-Sian
;
Wu, Kuan-Yi
;
Peng, Hsih-Hao
Porphyrin-Incorporated 2D D-A Polymers with Over 8.5% Polymer Solar Cell Efficiency
(2014-08-13)
Chao, YI-Hsiang
;
Jheng, Jyun-Fong
;
Wu, Jhong-Sian
;
Wu, Kuan-Yi
;
Peng, Hsih-Hao
Temperature dependence of electronic behaviors in quantum dimension junctionless thin-film transistor
(2014-08-13)
Cheng, Ya-Chi
;
Chen, Hung-Bin
;
Han, Ming-Hung
;
Lu, Nan-Heng
;
Su, Jun-Ji
The high temperature dependence of junctionless (JL) gate-all-around (GAA) poly-Si thin-film transistors (TFTs) with 2-nm-thick nanosheet channel is compared with that of JL planar TFTs. The variation of SS with temperature for JL GAA TFTs is close to the theoretical value (0.2 mV/dec/K), owing to the oxidation process to form a 2-nm-thick channel. The bandgap of 1.35 eV in JL GAA TFTs by fitting experimental data exhibits the quantum confinement effect, indicating greater suppression of I-off than that in JL planar TFTs. The measured partial derivative V-th/partial derivative T of -1.34 mV/degrees C in JL GAA nanosheet TFTs has smaller temperature dependence than that of -5.01 mV/degrees C in JL planar TFTs.
Conducting Ag/oligothiophene complex pastes through a simple quenching/chelation method
(2014-08-14)
Lu, Fang-Hsien
;
Chang, Feng-Chih
;
Mohamed, Mohamed-Gamal
;
Liu, Tzeng-Feng
;
Chao, Chuen-Guang
This paper describes a simple and environmentally friendly approach-a facile, one-pot, quenching/ chelation method-for the fabrication of a silver paste in the form of Ag/oligothiophene complex composites. These Ag/oligothiophene complex composites possess excellent conductivities of 1.8 x 10(4) S cm(-1) in the bulk state and 6.08 x 10(2) S cm(-1) in the form of thin films. We have used X-ray diffraction (XRD). X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) to characterize the microstructures of these novel Ag/oligothiophene complex composites.
Ferroelectric domain triggers the charge modulation in semiconductors (invited)
(2014-08-14)
Morozovska, Anna N.
;
Eliseev, Eugene A.
;
Ievlev, Anton V.
;
Varenyk, Olexander V.
;
Pusenkova, Anastasiia S.
We consider a typical heterostructure "domain patterned ferroelectric film-ultra-thin dielectric layer-semiconductor," where the semiconductor can be an electrolyte, paraelectric or multi-layered graphene. Unexpectedly, we have found that the space charge modulation profile and amplitude in the semiconductor, that screens the spontaneous polarization of a 180-deg domain structure of ferroelectric, depends on the domain structure period, dielectric layer thickness and semiconductor screening radius in a rather non-trivial nonlinear way. Multiple size effects appearance and manifestation are defined by the relationship between these three parameters. In addition, we show that the concept of effective gap can be introduced in a simple way only for a single-domain limit. Obtained analytical results open the way for understanding of current-AFM maps of contaminated ferroelectric surfaces in ambient atmosphere as well as explore the possibilities of conductivity control in ultra-thin semiconductor layers. (C) 2014 AIP Publishing LLC.
DISSOLUBLE PDMS-MODIFIED p(HEMA-MAA) AMPHIPHILIC COPOLYMER AND METHOD FOR FABRICATING THE SAME
(2014-08-14)
LIU Dean-Mo
;
HUANG Yun-Chun
;
HSU Chung-Yu
The present invention discloses a dissoluble PDMS-modified p(HEMA-MAA) amphiphilic copolymer and the method of fabricating the same. The amphiphilic copolymer of the present invention is fabricated via chemically bonding HEMA, MAA, and poly(dimethylsiloxane), bis(3-aminopropyl) terminated (PDMS) in aqueous solution. The PDMS-modified p(HEMA-MAA) amphiphilic copolymer can be dissolved completely in polar solvents, particularly alcohol solvents, to facilitate subsequent processing. The amphiphilic copolymer features adjustable hydrophobic-hydrophilic properties and exhibits excellent biocompatibility. Thus, it can be utilized in a number of advanced applications, including anti-fouling and drug delivery.
Conducting Ag/oligothiophene complex pastes through a simple quenching/chelation method
(2014-08-14)
Lu, Fang-Hsien
;
Chang, Feng-Chih
;
Mohamed, Mohamed-Gamal
;
Liu, Tzeng-Feng
;
Chao, Chuen-Guang
This paper describes a simple and environmentally friendly approach-a facile, one-pot, quenching/ chelation method-for the fabrication of a silver paste in the form of Ag/oligothiophene complex composites. These Ag/oligothiophene complex composites possess excellent conductivities of 1.8 x 10(4) S cm(-1) in the bulk state and 6.08 x 10(2) S cm(-1) in the form of thin films. We have used X-ray diffraction (XRD). X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) to characterize the microstructures of these novel Ag/oligothiophene complex composites.
Multifunctionalities driven by ferroic domains
(2014-08-14)
Yang, J. C.
;
Huang, Y. L.
;
He, Q.
;
Chu, Y. H.
;
材料科學與工程學系
Considerable attention has been paid to ferroic systems in pursuit of advanced applications in past decades. Most recently, the emergence and development of multiferroics, which exhibit the coexistence of different ferroic natures, has offered a new route to create functionalities in the system. In this manuscript, we step from domain engineering to explore a roadmap for discovering intriguing phenomena and multifunctionalities driven by periodic domain patters. As-grown periodic domains, offering exotic order parameters, periodic local perturbations and the capability of tailoring local spin, charge, orbital and lattice degrees of freedom, are introduced as modeling templates for fundamental studies and novel applications. We discuss related significant findings on ferroic domain, nanoscopic domain walls, and conjunct heterostructures based on the well-organized domain patterns, and end with future prospects and challenges in the field. (C) 2014 AIP Publishing LLC.
Piezoelectric and piezomagnetic force microscopies of multiferroic BiFeO3-LiMn2O4 heterostructures
(2014-08-14)
Eshghinejad, Ahmad
;
Liang, Wen-I.
;
Chen, Qian Nataly
;
Ma, Feiyue
;
Liu, Yuanming
BiFeO3-LiMn2O4 (BFO-LMO) heterostructures were fabricated via pulsed laser deposition, and their ferroelectric and ferromagnetic properties were probed by magnetic force microscopy (MFM), piezoresponse force microscopy (PFM), and the newly developed piezomagnetic force microscopy (PmFM). MFM imaging shows no clear distinction between BFO and LMO phases, while PFM and PmFM mappings clearly distinguish LMO nanopillars from BFO matrix. Linear piezoelectric and piezomagnetic responses have been observed in both phases, with the effects more prominent in BFO. The strong piezomagnetic response in BFO is believed to arise from Mn doping, while piezoelectric-like response of LMO is attributed to ionic activities as well as vertical geometry of the heterostructure. The limitation of global excitation of PmFM is also discussed. (C) 2014 AIP Publishing LLC.