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![]() Although the results are impacted by a non-ideality in the phantom, we could show that the variation of impedance as a function of rotation angle can be used to localize the regions with different impedivities.Īnalysis of Interface Material Noise in Non-Contact Capacitive Sensing A probe with stainless steel electrodes has been fabricated and tested with a technical phantom. The feasibility of the proposed approach is verified with numerical analysis. To this end, we propose an asymmetric electrode geometry, split electrodes, capable of distinguishing impedance variations as a function of rotation angle. #SUDHAKAR RAO PUC BIOLOGY PDF DOWNLOAD OFFLINE#Proposed concept is to identify and localize the landmarks via impedance measurements and then use this information to superimpose the estimated drilling trajectory on the offline maps obtained by pre-operative imaging. We present electrical impedance measurements as an assistive technology to image-guided surgery to achieve online guidance. Keywords: Bio-electric sensors - Sensor systems, Bio-electric sensors - Sensing methodsĪbstract: This work presents a method to minimize the inadvertent cutting of tissues in surgeries involving bone drilling. Split Electrodes for Electrical-Conductivity-Based Tissue Discrimination Sensor stability across time was also investigated, providing a preliminary understanding of the translational viability of the aptasensors for mobile and remote diagnostic applications. nM-1 in artificial saliva across clinically relevant HA titers.Average sensitivity was measured at 21.083 nA ![]() The sensor exhibited a lower limit of detection of 1.5 pM with linear detection of up to 1.2 nM in both Tris buffer and simulated human saliva, thus encompassing the clinically relevant HA range in saliva. The aptasensor was characterized by square wave voltammetry to quantify the sensor’s response to varying concentrations of HA. The aptamer was characterized by surface plasmon resonance to confirm its biorecognition activity for HA. A gold working electrode was functionalized with a thiol-modified, HA-binding aptamer derivatized with a methylene blue modification for redox reporting. Herein, a biosensor for detecting hemagglutinin (HA), an abundant capsid protein in H1N1 viruses, is demonstrated. Keywords: Chemo/bio-sensing - Chemical sensors and systems, Chemo/bio-sensing - Biological sensors and systems, Health monitoring applicationsĪbstract: Access to low-cost, rapid, individualized diagnostics at point-of-care and point-of-need is vital to minimize the impact of highly infectious viruses, such as influenza. North Carolina State University / UNC Chapel Hill These results demonstrate that the fabricated sensor is suitable for CBT measurement.Īptasensor for Detection of Influenza-A in Human Saliva #SUDHAKAR RAO PUC BIOLOGY PDF DOWNLOAD TRIAL#Moreover, a preliminary human trial conducted under daily-life conditions (including convectional changes) demonstrated that the sensor has LOA of ☌. The evaluation results demonstrate that the sensor has limits of agreement (LOA) of ☌ under 1-m/s-wind convection. We optimized the proposed design by computer simulation and evaluated the fabricated sensor by a phantom experiment in which the convectional state was changed. To make wearable sensors for long-term human trials, we proposed an integrated design in which a sensor probe, a circuit board, and a battery are stacked. Accordingly, we previously proposed a heat-flux-path control structure to reduce the absolute amount of heat-flux loss. Since heat flux is lost to the surroundings of the probe, the slightest change in convection in daily life will degrade the measurement accuracy of the sensor. CBT is calculated from skin-surface temperature and heat flux passing through the sensor. #SUDHAKAR RAO PUC BIOLOGY PDF DOWNLOAD SKIN#Keywords: Thermal sensors and systems, Wearable wireless sensors, motes and systems, Integrated sensor systemsĪbstract: We fabricated a wearable sensor that can be attached to the skin surface and continuously measure core body temperature (CBT) wirelessly over a long period. ![]()
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