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An infrared surface plasmon resonance (SPR) sensor with wavelength interrogation was prepared and its refractive-index (RI) sensitivity was theoretically and experimentally investigated. The numerical calculations indicate that at a specific incident angle the sensor has two surface plasmons in the spectral range 700 nm to 2400 nm and that a small change in the clad RI can induce a small red shift...
HP has recently made its plans to develop an ultrahigh-resolution seismic sensing solution public. This solution is being developed with Royal Dutch Shell Corporation for oil and gas exploration. Central to delivering this system is HP's new single axis seismic grade MEMS accelerometer. The HP device uses both bulk micromachining methods and standard thin film technologies as well as HP's new three...
Hybrid semiconductor nanomaterials (HSNs) possess unique and interesting optical properties and functionalities that find important applications in emerging technologies. Compared to single component nanomaterials, hybrid nanomaterials offer the possibility and flexibility to control their properties by varying the composition of the materials and related parameters such as morphology and interface...
Unbalancing in rotating machinery e.g. electric fans causes vibration which normally appears as noise. It reduces the life of shaft bearings. A dynamic balancing machine is used to reduce such a vibration to an acceptable level. Traditional dynamic balancing machine is very often in bad results as its low measure accuracy, long measurement time, and short range of measurement and low possibility of...
This paper outlines our current research agenda to achieve enhanced driver situation awareness. A novel approach that incorporates information gathered from sensors mounted on the neighboring vehicles, in the road infrastructure as well as onboard sensory information is proposed. A solution to the fundamental issue of registering data into a common reference frame when the relative locations of the...
This paper presents a novel phase current reconstruction scheme using the information obtained from shunt resistors (in series with low-side switches in a conventional three-phase inverter) for closed-loop current control in low-cost PMSM drives. A state observer is developed for reconstructing phase currents when they cannot be directly measured only in a portion of fundamental period due to the...
When conjugated to CdSe/ZnS nanocrystals (quantum dots), the nucleobase adenine and the neurotransmitter dopamine quench fluorescence emission from in a manner strongly dependent upon the size of the quantum dot. The degree of quenching serves to predict the efficiency with which the conjugates are able to enter living cells. Along with quenching, the presence of specific receptors on the cells is...
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