Lead-free lithium niobate (LiNbO3) piezoelectric transducer is considered as a substitute to lead-based solutions for vibrational energy scavenging applications. Taking into account the much lower dielectric constant of LiNbO3 crystal compared conventional piezoceramics (for instance PZT), we implement, in global optimization approach, thick single film on silicon substrate with optimized clamp...

The generation and use of energy are significant contributors to CO2 emissions. Globally, approximately 30% 40% all consumption can be directly or indirectly linked buildings. Nearly half usage in buildings is maintaining the thermal comfort inhabitants. Therefore, finding solutions that not only technically but also economically feasible utmost importance. Though much research has been conduct...

Thermocouples are a universal type of thermal sensors routinely used in different applications for the measurement and monitoring temperature. Traditionally, they constructed from two dissimilar conductors. In this work, single material thermocouples fabricated using graphite pencil traces patterned on cellulose paper. The magnitudes Seebeck coefficients grade pencils facilitate successful cons...

As a deceptively simple material, SnS has received extensive attention in the thermoelectric community recently due to its fascinating electron and phonon transport features, making it very promising candidate. In this review, we first discuss fundamental characteristics of SnS, including crystal structures, electronic phononic band physical or chemical properties. Meanwhile, approaches improvi...

introduction: in this study, arrangement of a low-cost optical tomography device compared to other methods such as frequency domain diffuse tomography or time domain diffuse tomography is reported. this low-cost diffuse optical imaging technique is based on the detection of light after propagation in tissue. these detected signals are applied to predict the location of in-homogeneities inside p...