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The silicon photonic wire evanescent field (PWEF) sensor platform offers the advantages of small sensor size, high levels of function integration, and low cost manufacturing that comes with the use of established semiconductor fabrication processes. The technology should be fully compatible with existing infrastructure in molecular analysis and research and the manufactured sensor array chip cost...
The effect of variable micropattern for an advanced compound optical film was investigated. This compound optical film was made by using Lithographie galvanoformung abformung (LIGA)-like process. The multi-step electroforming with micro-void embedded Polydimethylsiloxane (PDMS) was developed. This work presents many innovative processes, such as the homemade gray scale mask to fabricate variable size...
This paper presents the design of a spike event coded resonant gate transistor microphone system for neuromorphic auditory applications. The microphone system employs an array of resonant gate transistors (RGT) to transduce acoustic input directly into bandpass filtered analog outputs. The bandpass filtered analog outputs are encoded as spike time events by a spike event coder and are then transmitted...
High-transmissivity left/right-handed metamaterials were fabricated in a multilayered dielectric/hole metal array technology and experimentally assessed at sub-millimeter wave lengths. From the frequency dependence of the scattering parameters, we show the possibility to close the gap between the left- and right-handed dispersion branches.
The rapid development of electronic equipment makes the study on electromechanical coupling problem (EMCP) a new research area. The electromechanical coupling analysis is a multidisciplinary problem mainly involving the structure, electromagnetics and thermology. To begin with, the methods of calculating three fields are presented involved in EMCP, which is followed by the coupling relation. Then,...
An important idea for improving the practical performance of direction finding (DF) systems involves the use of calibration tables. These are generally based on experimental measurements of systemic errors obtained using a known signal to illuminate the antenna. However, the accuracy of the calibration data, and therefore that of the system, is affected by various error mechanisms. This paper uses...
The additional estimation error introduced by the use of finite ground planes is evaluated numerically for two types of conventional direction finding (DF) systems. The analysis reveals that commonly accepted ground plane dimensions result in degraded estimation accuracy when the incoming signals are of unknown polarization.
This paper describes how variations in elevation angle of incoming signals can affect the accuracy of Adcock direction finders (ADFs) in estimating the azimuth direction of arrival (DOA). In accordance with Adve and Sarkar [2000], Maxwellpsilas equations are solved to calculate the mutual coupling characterizing a typical ADF. The voltages at the antenna elements are calculated under several plane-wave...
Direction finding (DF) techniques based on a circular array of monopoles or dipoles have the advantage of being able to provide unambiguous direction of arrival (DOA) estimates over 360 degrees. Of the various implementation approaches that are possible, the Adcock direction finder (ADF) is commonly used at UHF and lower frequency ranges. One of the physical constraints is that the diameter of the...
Transcription target prediction from functional genomics data often involves incorporating a conjunction of complex prior biological knowledge to the analysis. Unfortunately, typical prior hypotheses are qualitative rather than quantitative in nature. But, many qualitative biological hypotheses can be decomposed into a set of logic statements on binary outcomes. Here, we present a new method to convert...
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