This work presents the design of an ultra-low power Operational Transconductance Amplifier (OTA) in the weak inversion region, desirable for very low voltage applications specifically in the sub-threshold region of operation. The design targets are relevant to bio-signal processing including ECG, EEG, EMG and EOG signals. Simulation results confirm high gain, low power consumption, and strong applicability in low-voltage bio-signal circuits.

This study explores the synthesis and characterization of polymer-based functional coatings with enhanced durability, hydrophobicity, and thermal stability. Experimental analysis demonstrates promising performance for industrial and protective applications, particularly in material engineering and smart surface development.

Rare-earth doped nanostructured films have attracted significant attention due to their tunable optical and magnetic properties. This paper reports fabrication routes, structural analysis, and performance evaluation of doped thin films intended for photonic devices and multifunctional material applications.