S. Kiran

Kyasanur Forest disease, India, 2011-2012.

To determine the cause of the recent upsurge in Kyasanur Forest disease, we investigated the outbreak that occurred during December 2011–March 2012 in India. Male patients >14 years of age were most commonly affected. Although vaccination is the key strategy for preventing disease, vaccine for boosters was unavailable during 2011, which might be a reason for the increased cases.

Kyasanur Forest Disease Outbreak and Vaccination Strategy, Shimoga District, India, 2013–2014

We investigated a Kyasanur Forest disease outbreak in Karnataka, India during December 2013–April 2014. Surveillance and retrospective study indicated low vaccine coverage, low vaccine effectiveness, and spread of disease to areas beyond those selected for vaccination and to age groups not targeted for vaccination. To control disease, vaccination strategies need to be reviewed.

Real time glucose monitoring system based on enzymatic nanosensor

In the present study Microcontroller based system for glucose monitoring is developed. The output of the conductometric nanosensor is taken as input to the glucose monitoring system. The output of the sensor varies with respect to the variation in glucose concentration. The output of the sensor is amplified by using an amplifier designed using IC 741. Amplified signal is fed to the input port “PORT A” of PIC 16F877 microcontroller. Microcontroller processes and analyses the amplified voltage and the result will be displayed on 16×2 LCD interfaced to it. An LCD displays various glucose concentration based on the condition as LOW, NORMAL, and HIGH.

Fabrication and characterization of enzymatic glucose sensor based on ZnO nanoparticles

Nanomaterials have been found to exhibit interesting properties like semiconducting, piezoelectricity etc. Among all metal oxides nanoparticles, particularly Zinc Oxide has become a material of interest among scientific community, due to the commercial importance. Zinc Oxide materials are biocompatible, chemically stable, nontoxic, electrochemically active and have fast electron transfer rate. In the present work a method of fabricating glucose sensor is described. ZnO nanoparticles are synthesized using wet chemical method. The synthesized nanoparticles are dip coated onto a silicon substrate. Enzyme immobilization is done on the nanoparticles by keeping the thin film in 4°C for 24 hrs. Optical and structural characterization of the synthesized sample is studied. The result of UV spectrometer reveals the formation of ZnO nanoparticles by showing absorption peak at 376.27 nm. The XRD pattern taken for the ZnO nanoparticles showed that the average particle size is to be 21.6 nm. SEM image of the sample is taken by depositing on the silicon wafer. Finally sensing property of sensor is examined by establishing contacts. The studies showed that the sensor has a linear response to the change in glucose concentration.

Study on silver doped and undoped ZnO thin films working as capacitive sensor

Nanomaterials have been found to exhibit interesting properties like good conductivity, piezoelectricity, high band gap etc. among those metal oxide family, Zinc Oxide has become a material of interest among scientific community. In this paper, we present a method of fabricating capacitive sensors, in which Silver doped ZnO and pure ZnO nanoparticles act as active layer. For the synthesis of the nanoparticle, we followed biosynthesis method and wet chemical method for Ag and Ag doped ZnO nanoparticles respectively. Characterization has been done for both the particles. The XRD pattern taken for the Ag Doped ZnO nanoparticles confirmed the average size of the particles to be 15nm. AFM image of the sample is taken by doping on Silicon wafer. Also we have presented the results of CV characteristics and IV characteristics of the capacitive sensor.