Browsing by Author "Chen, S. P."

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Ordered YBCO sub-micron array structures induced by pulsed femtosecond laser irradiation
(2008-12-08)
Luo, C. W.
;
Lee, C. C.
;
Li, C. H.
;
Shih, H. C.
;
Chen, Y. -J.
We report on the formation of organized sub-micron YBa(2)Cu(3)O(7) (YBCO) dots induced by irradiating femtosecond laser pulses on YBCO films prepared by pulse laser deposition with fluence in the range of 0.21 similar to 0.53 J/cm(2). The morphology of the YBCO film surface depends strongly on the laser fluences irradiated. At lower laser fluence (similar to 0.21 J/cm(2)) the morphology was pattern of periodic ripples with sub-micrometer spacing. Slightly increasing the laser fluence to 0.26 J/cm(2) changes the pattern into organized sub-micron dots with diameters ranging from 100 nm to 800 nm and height of 150 nm. Further increase of the laser fluence to over 0.32 J/cm(2), however, appeared to result in massive melting and led to irregular morphology. The mechanism and the implications of the current findings will be discussed. Arrays of YBCO sub-micron dots with T(c) = 89.7 K were obtained. (C) 2008 Optical Society of America
RFID-Based System on Emergency Medical Care
(2018-01-01)
Chen, Ruey-Shun
;
Hu, Yu-Xi
;
Chen, Yeh-Cheng
;
Horng, Shi-Jinn
;
Fan, Xiaopeng
This study is based on RFID technology to detect the locations of medical care personnel and patient who move around indoors; meanwhile, wearable and mobile physiological signal detection suite technique is associated to monitor the physiological status of the patient at any time. Through the positioning message of RFID, the computer system can assign medical care personnel that is nearest to the patient at emergency accident to perform medical care. Furthermore, through the use of wireless mobile device, it can be ensure that medical care personnel can obtain any emergency message of the patient at any time. Through integration of three techniques such as RFID technique, physiological signal detection suite technique and wireless mobile device, a set of emergency medical care system structure is designed in this study. Meanwhile, based on this system structure, a prototype system is developed to verify the feasibility of this system structure. Through the emergency medical care system developed in this study, no matter when and where emergency accident occurs, medical care personnel can reach the patient at the emergency accident site in the shortest time to reduce the possibility of delayed medical care.