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This research presents a metal functionalized titanium dioxide (TiO2) nanotube based sensor developed for detection of volatile biomarkers (methyl p-anisate and methyl nicotinate) associated with tuberculosis (TB). In this work self-aligning TiO2 nanotubes were fabricated, and functionalized with cobalt for specific binding to the volatile biomarkers of interest. Mimics of the volatile biomarkers...
Today's high functionality electronic circuits require faster interconnection speed, better thermal conductivity and the good mechanical properties for reliability. These requirements calls for enhanced properties of the present solder materials. Appropriate reinforcements in the existing solder material will help in achieving much improved electrical, mechanical and thermal properties. Carbon Nano...
In this paper, we propose an improved method of In-core neutron flux estimation using Inconel Self Powered Neutron Detectors (SPNDs). The method proposed here is based upon multi-sensor based particle filter utilizing a number of uniformly distributed SPNDs along with the out-core ionization chambers which measure the overall flux. The proposed method estimates the neutron flux of large non-linear...
Palm prints are rich in features, can be easily acquired and hence different Palmprint features are used for the purpose of biometric identification. This paper presents analysis of wavelet coefficients for feature extraction of palm print images for biometry. A novel preprocessing technique for alignment of Palmprint images has been developed which allows the palm to be placed in any orientation...
During the last two decades, focused ion beam (FIB) technology has been used as a tool in highly demanding applications in the field of nanotechnology such as repair of photolithography masks, repair and modification of integrated circuits, TEM sample preparation, selective implantation, resist exposure etc. The technology of using FIBs for nano/micro fabrication is also called direct writing, which...
The presentation describes the function of rockets to launch the space shuttle into the space, different processes involved in rocket manufacturing, fuel mixing process including ingredients of the fuel, casting, static test, igniter installation, shipment of the segments to Kennedy Space Center (KSC), assembly at KSC, etc. It also involves space Orbiter installation, launch preparation, launch, motor...
The non judicious application of a particular class of pesticides-organophosphates (OPs) to control agricultural pest has become a serious environmental issue leading to soil and subsequently surface & ground water pollution. The environmental concerns regarding persistence of organophosphates and toxic metabolites in soil and ground water has stimulated the research to develop rapid and sensitive...
Wireless Sensor Networks (WSN) is an emerging technology with a potential to revolutionize the way we sense and transmit the information. The applications are many and look to be limited by our imagination and ingenuity. Some of the important applications are process monitoring, military surveillance, structural health monitoring, environment monitoring, health monitoring, Nuclear, Biological and...
This research presents a metal functionalized titanium dioxide (TiO2) nanotube based sensor developed for detection of volatile biomarkers (methyl p-anisate and methyl nicotinate) associated with tuberculosis (TB). In this work self-aligning TiO2 nanotubes were fabricated, and functionalized with cobalt for specific binding to the volatile biomarkers of interest. Mimics of the volatile biomarkers...
An optical sensor is probably the most engaging areas of research at present, given the number of publications that come out in this area. Starting with simple optical fiber sensors for physical parameters such as temperature, strain, etc. to the more complex biosensing strategies, optical sensors promise immunity to electrical interferences, ease of manufacturing and easy acceptance from the user...
The main intention to present this work is to analyze the theoretical aspect of the optical fiber based relative humidity sensor. The sensor was fabricated using layer by layer (LbL) deposition on the tip of the optical fiber. Corresponding results of fabricated relative humidity sensor using different material like SiO2, ZnO and Hybrid material were compared with theoretical results. A comprehensive...
This paper presents structural, morphological and electrical characterization of the in-house developed ruthenium oxide based thick film resistor pastes for buried heater applications in LTCC. The basic electrical characterization of heater shows that the designed test heater achieved temperature up to 238°C. The required power to raise the temperature up to 238°C was 1.9W. It is found that the in-house...
In this paper, we present two-dimensional modeling and simulation of blood vessel using COMSOL Multiphysics. The rationale behind this study is that mathematical modeling and numerical simulation can lead to better understanding of the phenomena involved in vascular diseases. This study assumes that the fluid is laminar, non-Newtonian, viscous and compressible and the arterial wall is elastic. Parameters...
Ion-Sensitive Field-Effect Transistor (ISFET) is a popular potentiometric chemical/bio-chemical sensor. However, due to charge screening, the sensitivity of the device is significantly reduced. A logarithmic dependence is exhibited between the charge present at the electrolyte-insulator interface and the charge mirrored in the conducting channel, which limits the sensitivity of an ideal conventional...
Palladium and palladium alloys (nickel, cobalt and nickel co-substituted) were prepared using low temperature chemical reduction technique at 300 K. The synthesized metal and alloys were deposited using PLD on alumina substrate. The deposited nanostructured thin film alloys showed much better sensitivity towards hydrogen between the concentrations of 2000 and 20000 ppm of hydrogen than pure palladium...
Hydrogenated nanocrystalline silicon carbide (nc-SiC:H) films were prepared by hot wire chemical vapor deposition (HW-CVD) method using ethane (C2H6) as a carbon precursor. The influence of deposition pressure on structural and optical properties was investigated. The formation of nc-SiC:H films was confirmed by low angle x-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR)...
The gas sensing characteristics of Cr1−xFexNbO4 (x = 0.0, 0.5, 1.0) towards different organic analytes and hydrogen were investigated at different operating temperatures. The slope of the retrace transient, a representative feature for desorption kinetics was considered for data exploration. 11 sensors with 12 samples were tested and the data obtained was processed using principal component analysis...
Prognostics and health management is a method within the concepts of the Internet of Things, that permits the assessment of a system under its actual application conditions. It integrates sensor data with models that enable in-situ assessment of the “health” (e.g. deviation or degradation) of a system from an expected normal operating condition and also predicts the future state of the system based...
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