Additively manufactured flexible and high-performance piezoelectric devices are highly desirable for sensing energy harvesting of 3D conformal structures. Herein, the study reports a significantly enhanced piezoelectricity in polyvinylidene fluoride (PVDF) achieved through situ dipole alignment PVDF within PVDF-2D molybdenum disulfide (2D MoS2) composite by printing. The shear stress-induced po...

Piezoelectricity provides an ideal electromechanical mechanism with emerging applications in wearable devices due to its simplicity and self-powered nature. However, the 3D printing of piezoelectric still faces many challenges, including material printability, high energy poling process, low dimensional accuracy. This study demonstrates, for first time, a tellurium nanowire-based device fabrica...

We analyze the second-harmonic generation in two-dimensional photonic structures with radially periodic domains created by poling of a nonlinear quadratic crystal. We demonstrate that the parametric conversion of the Gaussian fundamental beam propagating along the axis of the annular structure leads to the axial emission of the second-harmonic field in the form of the radially polarized first-o...

Epitaxial La:HfO 2 films of less than 7 nm have a high remanent polarization about 30 ?C cm ?2 , and show slight wake-up, endurance at least 10 cycles retention more years, with both latter properties measured the same poling voltage.

Establishing appropriate relations between the basic and applied areas of behavior analysis has been of long and persistent interest to me (e.g., Friman & Poling, 1996; Poling, Picker, Grossett, Hall-Johnson, & Holbrook, 1981; Porritt, Van Wagner, & Poling, 2009). Therefore, I read with enthusiasm the collection of articles on progressive-ratio (PR) schedules that appeared in the Summer 2008 is...