Optical limiters are nonlinear devices that encompass applications from device protection to activation functionalities in neural networks. In this work, we report an optical limiter on silicon photonics based ultracompact VO2/Si waveguide. Our 20-?m-long experimental features a thermal tunable threshold power of only ?3.5 mW while being spectrally broadband. work provides new pathway achieve i...

Withania somnifera (ashwagandha) is a widely used herb in the Ayurvedic system of medicine. The objective of the present study was to elucidate the effect of W. somnifera root extract (Ws) alone or in combination with exogenous gamma-amino butyric acid (GABA), a GABA receptor agonist or with diazepam, a GABA receptor modulator against pentylenetetrazol (PTZ, iv) seizure threshold in mice. Minim...

In this paper a new SRAM cell is designed with a body bias controller to control leakage, speed and stability. A novel controller circuit is proposed to control the value of threshold voltage. Operation of the proposed controller is based on word line signal levels. In order to reduce sub threshold leakage current, the NMOS access and driver transistor is adjusted to a higher threshold voltage....