Browsing by Author "Cheng, Y."

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Magnetoelectric effect induced by the delocalised Nb-93m state
(2015-01-02)
Cheng, Y.
;
Guo, Z. -Y.
;
Liu, Y. -L.
;
Young, B. -L.
;
Lee, C. -H.
We herein report on the density- and temperature-dependent decay of the Nb-93m nuclear excited atom and present a simple interpretation of the underlying physics. This anomaly indicates nuclear resonant absorption and delocalisation of the long-lived Mossbauer state in the crystal. A non-linear magnetoelectric response, on low-frequency drive current, appeared in the bulk metal of a high-purity niobium crystal and then disappeared along with the disappearance of delocalised nuclear excitation. Several non-linear resonant peaks, of the order of several hundred Hertz, increased in magnitude with the applied magnetic field, and the central frequencies of these peaks decreased with temperature.
Novel Electromagnetic Targeting System for Navigating Surgery in Endobronchoscopy
(2018-01-01)
Chen, C.
;
Lin, C.
;
Cheng, Y.
;
Chung, T.
;
Chang, C.