Ritu Raj Singh

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—A hybrid CMOS/thin-film microsystem for fluores-cence contact imaging is presented. The microsystem integrates a high-performance optical interference filter and a 128 128 pixel active pixel sensor fabricated in a standard 0.35-m CMOS technology. The thin-film filter has an optical density greater than 6.0 at the wavelength of interest, providing adequate(More)
— We present a capacitive digital-to-analog converter (DAC) architecture combining properties of the binary-weighted and serial charge-redistribution DACs to yield high integration density and high accuracy. The architecture provides the flexibility to trade area with conversion speed based on a set of area-speed-linearity constraints. We validate the(More)
— A hybrid thin film/CMOS microsystem for fluores-cence contact imaging is presented. The microsystem integrates a high-performance optical filter and a 128x128-pixel imager fabricated in a 0.35µm technology. The thin-film filter is fabricated and characterized prior to assembly. Its optical density (OD) is over 6.0 at the wavelength of interest. The(More)
Liver cancer remains one of the severe lethal malignancies worldwide and hepatocellular carcinoma (HCC) is the most common form. The current study was designed to evaluate the prophylactic role of the fruit of Averrhoa carambola (star fruit or Kamrak) on diethylnitrosamine- (DENA-) induced (15 mg/kg b.wt.; single i.p. injection) and CCl4-promoted (1.6 g/kg(More)
Neonatal meningitis is one of the important causes of infant mortality and morbidity. Periventricular white matter of neonatal brain is known to be vulnerable to oxidative and hypoxic/ischemic injury secondary to neuro-infections. The aim of this study was to assess periventricular white matter damage in neonatal bacterial meningitis using diffusion tensor(More)
Association of cholesteryl ester transfer protein (CETP) Gene -629C/A Polymorphism with angiographically proven atherosclerosis CETP gene has been linked to CAD risk via its role in HDL and LDL metabolism. There is no agreement of whether CETP is atherogenic or not. Furthermore, various genotypes of CETP gene have been associated with CETP levels and thus(More)
Hormones play an important role in the development and regulation of reproductive function and the menstrual cycle of women. Extremes of body weight tend to affect the homeostasis of the hypothalamo–pituitary–gonadal axis. This cross-sectional study was carried out in 113 women (57 with primary infertility and 56 with secondary infertility) in the age group(More)
—A hybrid CMOS-microfluidic microsystem for chemi-luminescence and electrochemiluminescence-based biochemical sensing is presented. The microsystem integrates a two-layer soft polymer microfluidic network and a CMOS imager fabricated in a standard 0.35-m technology. The CMOS imager consists of a 64 128-pixel array interdigitated with a 32 64 electrolessly(More)
— We present a simple, high-sensitivity, array-based capacitive sensor for biological applications. The circuit can accurately sense ungrounded coupling capacitances, while strongly attenuating the effect of unwanted parasitics. It can also perform capacitance-voltage profiling of nonlinear biological capacitances at very low voltages. We implement a dual(More)
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