Cerebral oxygen saturation in the prefrontal cortex during electroconvulsive therapy and its relation with the postictal reorientation time.

The therapeutic effect of Electroconvulsive Therapy (ECT) has been attributed to generalised seizure. Although patients are well oxygenated prior to and during treatment, critics have associated ECT with brain tissue hypoxemia. In this study, the regional oxygen saturation (rSO) was measured continuously during ECT in the prefrontal cortex (PFC) of both hemispheres using 2-channel Near Infrared Spectroscopy (NIRS).

Large-Scale Patterning of Reactive Surfaces for Wearable and Environmentally Deployable Sensors.

Wearable interfaces are central to multiple healthcare and wellness strategies encompassing diet and nutrition, personalized health monitoring, and performance optimization. Specifically, the advent of flexible electronic formats coupled with microfluidic interfaces has resulted in sophisticated conformal devices for biofluid sampling and quantification. Here, a complementary approach is presented to wearable sensing by using a large-scale, conformal, distributed format that relies on the use of biomaterial-based inks to print and stabilize deterministic patterns of biochemical reporters with high resolution.

High speed and high responsivity germanium photodetector integrated in a Silicon-On-Insulator microwaveguide.

We report the experimental demonstration of a germanium metal-semiconductor-metal (MSM) photodetector integrated in a SOI rib waveguide. Femtosecond pulse and frequency experiments have been used to characterize those MSM Ge photodetectors. The measured bandwidth under 6V bias is about 25 GHz at 1.

Optical modulation by carrier depletion in a silicon PIN diode.

Experimental results for refractive index variation induced by depletion in a silicon structure integrated in a PIN diode are reported. Thermal effect has been dissociated from the electrical contribution due to carrier density variation induced by a reverse bias voltage. A figure of merit V(pi)L(pi) of 3.

Ultracompact splitter for submicrometer silicon-on-insulator rib waveguides.

An ultracompact and efficient 1 x 2 splitter for submicrometer silicon-on-insulator rib waveguides using a star coupler is reported. The structure proposed here is decidedly smaller than the usual splitters such as multi-mode interference or Y-branch devices and much less sensitive to technological fluctuations. Design of the compact splitter is optimized at lambda = 1.