Browsing by Issue Date, starting with "2019-11-30"

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Chemical vapor deposition growth of bilayer graphene via altering gas flux geometry
(2019-11-30)
Petrov, Stefan
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Rafailov, Peter M.
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Marinova, Vera
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Lin, Shiuan-Huei
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Lai, Yi-Chun
Graphene films with high content of bilayer graphene are obtained by chemical vapor deposition technique on copper (Cu) foil by means of suitably designing the flux geometries of the reactant gases. First single-layer graphene growth is optimized using a preliminary oxygen passivation of the Cu substrate which facilitates the formation of larger graphene grains with low defect density. Then, in order to enhance the transport of reactant species to the catalyst substrate, the gas flux geometry is modified in two ways: (i) fixing a graphite holder next to the Cu substrate perpendicular to the stream of the flux gases or (ii) positioning the Cu foil into a graphite shelter. It is found that both modifications facilitate the growth of a second graphene layer leading to increased formation of bilayer graphene. The obtained graphene layers are characterized by Raman spectroscopy (with special focus on the overtone (2D) of the disorder-induced band), scanning electron microscopy, transmission electron microscopy, atomic force microscope analysis and optical transmission measurements. Narrow symmetric 2D Raman peaks with linewidths ranging down to 22 cm(-1) but blue-shifted with respect to that of single-layer graphene are obtained from graphite holder- and shelter-grown samples indicating high-quality bilayer graphene.
Highly efficient flexible organic light-emitting diodes based on a high-temperature durable mica substrate
(2019-12-01)
Lai, Yi-Ning
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Chang, Chih-Hao
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Wang, Pei-Chun
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Chu, Ying-Hao
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交大名義發表
Muscovite mica is expected to show great potential in flexible optoelectronics due to its superb temperature tolerance, high transmittance, chemical stability, and mechanical durability. This flexible substrate produces sputtered transparent conducing electrodes (TCEs) with excellent film quality with high transmittance and conductivity. In this study, a designed composite TCE consisting of aluminum-doped zinc oxide (AZO) and indium fin oxide (ITO) is proposed to simultaneously maximize flexibility and conductivity. Blue-, green-, and red-emitting flexible organic light-emitting diodes (FOLEDs) using composite TCEs on mica exhibited satisfactory performance with maximum respective electroluminescence efficiencies of 18.1% (38.7 cd/A), 18.7% (66.2 cd/A), and 13.3% (22.2 cd/A). Furthermore, the green-emitting FOLEDs were modified to construct tandem FOLEDs, giving a higher peak efficiency of 27.9% (93.3 cd/A) and saturated green emission. These results can serve as a useful reference for future work on composite TCEs on mica for FOLEDs in display and lighting applications.
劉大鴻的創作
(深河出版有限公司, 2019-12-01)
郭秀鈴
The Differing Effect of Gender and Clinical Specialty on Physicians' Intention to Use Electronic Medical Record
(2019-12-01)
Hwang, Hsin-Ginn
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Dutta, Bireswar
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Chang, Hui-chuan
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資訊管理與財務金融系註：原資管所+財金所
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Department of Information Management and Finance
Background The use of electronic medical record (EMR) is anticipated to bring benefits for patients, physicians, and organizations. But limited physicians' acceptance of EMR presents a serious threat to its effective implementation. Objectives The current study incorporates technology acceptance model (TAM) with two antecedents, gender, and clinical specialty and one context-specific factor, financial incentives, to identify the factors that influence physicians' intention to use EMR in Taiwan. Methods The survey methodology was used to collect data from the physicians, working in the regional hospital that had implemented EMR system. A total of 119 out of 213 questionnaires returned in a response rate of 56%. But four responses were considered ineffective due to missing values. The structural equation modeling (SEM) technique was employed to analyze the research framework. Results The partial least squares (PLS) regression indicated that three factors perceived usefulness, financial incentives, and attitude toward using EMR significantly affect physicians' intention. But concerning perceived ease of use (PEOU), an insignificant path coefficient was reported. Additionally, regression analysis showed gender, and clinical specialty positively influenced physicians' intention to use EMR. Discussion and Conclusions The proposed research framework contributes to the conclusive explanation for interpreting physicians' intention to use EMR. Physicians generally have a higher level of computer literacy. Therefore, the factor of PEOU could not be critical regarding adopting new health information technology (HIT). This study also brings perspectives from the gender, and clinical differences have primarily been missing in the literature of the physicians' intention to use HIT. In doing so, it infers how gender, and clinical specialty, may complement (and in some instances, reinforce) the influence of technological and attitudinal factors of HIT use. Thus, health care providers must take these factors into consideration in the development and validation of the theories regarding the intention to use EMR.
序言
(國立陽明交通大學出版社, 2019-12-01)
今福龍太
;
朱惠足
中國特色的都市公共空間與地方文化自主性：評介王笛的《茶館：成都的公共生活和微觀世界1900－1950》及The Teahouse under Socialism: The Decline and Renewal of Public Life in Chengdu, 1950-2000
(國立陽明交通大學出版社, 2019-12-01)
劉世鼎
Forming-Free SiGeOx/TiOy Resistive Random Access Memories Featuring Large Current Distribution Windows
(2019-12-01)
Cheng, Chun-Hu
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Chin, Albert
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Hsu, Hsiao-Hsuan
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電子工程學系及電子研究所
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Department of Electronics Engineering and Institute of Electronics
Optimal device integrity was achieved in Ni/SiGeOx/TiOy/TaN resistive memory by using a formingfree switch with a low switching power of 790 mu W, stable endurance of 10(4) cycles, optimal retention time of 10(5) s, resistance window of at least 1150x, and tight current distributions at 85 degrees C. These characteristics are attributed to the low current switching obtained using SiGeOx with a high oxygen vacancy density and highly defective TiOy grain boundaries.
亡魂顯影的思辨：論「靈異錄像」與「觀落陰」的視線邊界
(國立陽明交通大學出版社, 2019-12-01)
梁廷毓
幽靈、鬼魅，近年來時常成為臺灣乃至於亞洲當代藝術書寫中，用以描述攝影、影像、投映裝置的美學論述，以及描繪其感知型態的語詞。影像彷彿提供了歷史幽靈復返的路徑，讓被壓抑、骯髒、受迫之人，以鬼魂之姿重回當下，並有能力展開時間的調度，在過去與當下、現實與虛構之間穿梭與擾動。但是，當「鬼魂」不以一種隱喻的修辭存在，不再只是「過去的復返」、「精神的纏繞」，不再是人所賦予的倫理學化的想像，不再背負其歷史的冤仇與創傷，仍然執意（或無意）進入影像之時，我們該如何理解影像與鬼魂的關係？當人們想透過觀落陰「見到」已逝親人的亡魂時，觀看如何得以不經由光線，與「影像」產生關聯？首先，本文會從臺灣當代藝術的影像實踐與評述中的鬼魂性質，作為問題意識的展開，再進行鬼魂概念的思辨，並進一步以「靈異影像」與「觀落陰」為例，分別從監視器當中「攝入鬼魂的影像」、「否定光線的影像儀式」，探討這兩者在影像生產、觀看機制，以及放映形式上，蘊含何種特殊的影像概念。一方面，這些「影像」被排拒在影像研究的範圍之外，鮮少被討論過；另一方面，理性的話語也面臨難以論述、脈絡化這些「影像」的困局。這些位處於我們視線之外的幽影，讓影像的生產過程不再倚賴光源、傷痕敘事與歷史事件，卻直面觀看本身的困難，直逼影像認知的界限。文末，筆者嘗試將這些還在形塑中的「影像」與「類影像」概念，重新置放到臺灣當代藝術關於影像研究、論述中的鬼魂性質與想像當中，並進行相關的反思與問題的推進。
Decision Support for the Optimization of Provider Staffing for Hospital Emergency Departments with a Queue-Based Approach
(2019-12-01)
Jiang, Fuu-Cheng
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Shih, Cheng-Min
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Wang, Yun-Ming
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Yang, Chao-Tung
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Chiang, Yi-Ju
Deployment or distribution of valuable medical resources has emerged as an increasing challenge to hospital administrators and health policy makers. The hospital emergency department (HED) census and workload can be highly variable. Improvement of emergency services is an important stage in the development of the healthcare system and research on the optimal deployment of medical resources appears to be an important issue for HED long-term management. HED performance, in terms of patient flow and available resources, can be studied using the queue-based approach. The kernel point of this research is to approach the optimal cost on logistics using queuing theory. To model the proposed approach for a qualitative profile, a generic HED system is mapped into the M/M/R/N queue-based model, which assumes an R-server queuing system with Poisson arrivals, exponentially distributed service times and a system capacity of N. A comprehensive quantitative mathematical analysis on the cost pattern was done, while relevant simulations were also conducted to validate the proposed optimization model. The design illustration is presented in this paper to demonstrate the application scenario in a HED platform. Hence, the proposed approach provides a feasibly cost-oriented decision support framework to adapt a HED management requirement.
Built-In Self-Test/Repair Methodology for Multiband RF-Interconnected TSV 3D Integration
(2019-12-01)
Cheng, Shu-Feng
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Huang, Po-Tsang
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Wang, Li-Chun
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Chang, Mau-Chung Frank
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交大名義發表
Editor's note: Multiband radio-frequency interconnect (MRFI) is an emerging technology to achieve low-latency and energy-efficient on-chip communication. This article proposes a BIST method to improve the reliability of MRFI-based design. -Partha Pratim Pande, Washington State University
老鄧給個說法─你們家的小牙醫與勞基法(一)
(國立陽明大學牙醫校友會, 2019-12)
鄧政雄
Emission dynamics of GaN-based blue resonant-cavity light-emitting diodes
(2019-12-01)
Xu, Rong-Bin
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Xu, Huan
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Mei, Yang
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Shi, Xiao-Ling
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Ying, Lei-Ying
We fabricated GaN-based blue resonant-cavity light-emitting diodes (RCLEDs) by inserting InGaN quantum well (QW) active region between two dielectric distributed Bragg reflectors (DBRs). Due to the different gain enhancement factors in a single device, multi-longitudinal modes were observed and tuned with changing the injection current density: pure-blue (PB) at low current density, violet-blue (VB) at intermediate current density, and PB again at high current density. The variation of emission spectra is explained by the competition between band-filling effect and self-heating effect.
邁向共生的都市
(國立陽明交通大學出版社, 2019-12-01)
呂欣怡
就愛自己來?揭開DIY染髮的祕密
(2019-12-01)
陳炘瑜
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Department of Communication and Technology
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傳播與科技學系
【成為自己的設計師──DIY染髮的秘密】專題

你喜歡染髮嗎？你是否嘗試過DIY染髮？本篇帶你看到關於自己動手染髮與開架式染劑背後的祕密。
Using lactosylated cysteine functionalized gold nanoparticles as colorimetric sensing probes for rapid detection of the ricin B chain
(2019-12-01)
Kandasamy, Karthikeyan
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Selvaprakash, Karuppuchamy
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Chen, Yu-Chie
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應用化學系
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Department of Applied Chemistry
A new colorimetric method that can be used to rapidly detect toxic ricin is demonstrated. Lactosylated cysteine-functionalized gold nanoparticles (Au@LACY NPs) were prepared by a one-pot reaction and employed as optical probes for determination of ricin B chain. It is found that the Au@LACY NPs undergo aggregation in the presence of ricin B chain. This leads to surface plasmon coupling effects of the particles and a color change from red to blue, with absorption maxima at 519 and 670 nm, respectively. The feasibility of using the current approach for quantitative analysis of ricin B chain is also demonstrated. The calibration plot is generated by plotting the ratio of the absorbance at the wavelength of 634 to 518 nm versus the concentration of the ricin B chain. The spectrophotometric method has a 29 pM (0.91 ng center dot mL(-1)) detection limit, and the sample with the concentration of 400 pM (13 ng center dot mL(-1)) can be detected visually.
Visual Servo Control System of a Piezoelectric 2-Degree-of-Freedom Nano-Stepping Motor
(2019-12-01)
Chen, Cheng-Lung
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Hung, Shao-Kang
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機械工程學系
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Department of Mechanical Engineering
A nano-stepping motor can translate or rotate when its piezoelectric element pair is electrically driven in-phase or anti-phase. It offers millimeter-level stroke, sub-micron-level stepping size, and sub-nanometer-level scanning resolution. This article proposes a visual servo system to control the nano-stepping motor, since its stepping size is not consistent due to changing contact friction, using a custom built microscopic instrument and image recognition software. Three kinds of trajectories straight lines, circles, and pentagrams are performed successfully. The smallest straightness and roundness ever tested are 0.291 mu m and 2.380 mu m. Experimental results show that the proposed controller can effectively compensate for the error and precisely navigate the rotor along a desired trajectory.
108年8月10-11日校友會旅遊阿里山二日遊活動花絮
(國立陽明大學牙醫校友會, 2019-12)
温斯勇
Guest Editorial: Special Issue on Selected Papers From IEEE ISCAS 2019
(2019-12-01)
Ker, M.
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Valle, M.
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Johnston, M. L.
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交大名義發表
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National Chiao Tung University
The papers in this special section were presented at the 2019 IEEE International Symposium on Circuits and Systems (ISCAS 2019), that was held in Sapporo, Hokkaido, Japan from May 26 to 29, 2019.
Applying Biomineralization Technology to Study the Effects of Rainfall Induced Soil Erosion
(2019-12-01)
Shih, Dong-Sin
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Lai, Tzu-Yi
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Hsu, Zuo-Ming
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土木工程學系
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Department of Civil Engineering
The rainless days and drought seasons reveal a tendency to lengthen the wet and dry period in recent years in Taiwan. In the bare riverbeds in central Taiwan, such as the Dajia and Zhuoshui rivers, fugitive dust is the common problem during the winter's dry period with northeast monsoon. The study aims to use the biological method, Microbial-induced carbonate precipitation (MICP), to solidify the soil and implement a series of rainfall simulator experiments to reduce the Aeolian dust emission problems. Accordingly, the relationship between rainfall-induced soil erosion and its soil specimens are also discussed. The soil conducted the MICP for seven days as the curing age, and then be analyzed the degree of soil solidification under different conditions, rainfall intensity of 41 mm/h and 61 mm/h by the soil erosion experiment. The effect of soil solidification with various relative density of soils of 60%, 70%, and 80%, and hillside slopes of 5 degrees, 10 degrees, 20 degrees were tested. The result indicated that, the higher the relative density of soils, the better the effect of soil solidification would be. The relative density of soils from 60% to 80% all kept the effect of soil solidification as applying to MICP. Therefore, it was important to select the curing age with the matching relative density of soils. Moreover, the most appropriate condition for the effects of soil solidification by MICP was the slopes below 10 degrees and the curing age for seven days. The effect of soil solidification was still preserved in that with the high intensity rainfall (66 mm/h) due to the Aeolian dust emission commonly happening in the bare riverbeds with mild slopes.
運動中成長的反帝民族意識：李富榮訪談
(深河出版有限公司, 2019-12-01)
林麗雲
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延光錫
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宋嘉俳
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李富榮