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The anomalous Nernst effect (ANE) and the spin Seebeck effect (SSE) in spin caloritronics are two of the most important mechanisms to manipulate the spin-polarized current and pure spin current by thermal excitation.
This paper presents the implementation of power quality (PQ) analysis platform that can access different venders' PQ meter data being translated to Power Quality Data Interchange Format (PQDIF) files and view the data through a LabVIEW-based graphical user interface. The implemented platform also can manage the retrieved PQ data in a customized database. Performance tests show that the implemented...
This paper presents a digital implementation of a DSP-based digital IEC 61000-4-15 flickermeter. According to the functions and design criteria suggested by IEC, a digital model of the flickermeter is developed and simulated by using Matlab and Code Composer Studio. Then, the developed flickermeter function is applied to perform a series of tests based on IEC Standard 61000-4-15 test procedures to...
We report ultra-fast voltage-tunable optical response from metamaterials based coupling of plasmonic resonances in metallic nanostructures with intersubband polaritons. Over 310nm of spectral peak tuning around 7µm with 10ns response time was experimentally demonstrated.
Electrical impedance tomography (EIT) is a relatively new medical imaging method, and has the advantages of being inexpensive, safe, non-invasive and portable. Complementary to CT and MRI, it reconstructs images of impedance changes from the EIT sensor arrays. Its principal shortcoming is poor spatial resolution. One approach to improving spatial resolution is to include prior information regarding...
A CMOS receiver for optical wireless communication is presented. A stable feedback transimpedance amplifier (TIA) is designed adopting a current-mode amplifier as its feedforward gain element. A band-pass limiting amplifier is employed to boost the outputs of the receiver front-end. Implemented in a 0.35 um CMOS, the optical wireless receiver achieves a maximum transimpedance gain of 95.9 dBΩ. The...
We demonstrate cascade green light-emitting-diode (LED) arrays, which have superior output-power to single LED without sacrificing modulation-bandwidth. 80 Mbit/sec eye-opening with a 0.65 mW coupled power to plastic-optical-fiber is achieved under the output of in-car battery (12 V).
An ultrasonic motor (USM) of the friction type is driven by the friction force between the stator and the rotor. However the classical Coulomb friction law can not be used to explain the driven mechanism of an ultrasonic motor under the condition of high frequency vibration between the stator and the rotor. In our early study[1], a vibration friction model was offered to explain a phenomenon in an...
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