Etching of crystalline silicon by potassium hydroxide (KOH) etchant with temperature variation has been studied. Results presented here are temperature dependent ER (etch rate) along the crystallographic orientations. Etching and activation energy are found to be consistently favorable with the thermal agitation for a given crystal plane. Study demonstrates that the contribution of microscopic ...

Nd2Fe14B-type materials exhibit the highest energy product around room temperature and hence dominate high-performance permanent magnet market. Intensive research efforts aim at alternative material systems containing less critical elements with similar or better magnetic properties. Nd- Sm-based compounds a ThMn12-type structure intrinsic properties comparable even superior to Nd2Fe14B. Howeve...

Chiral Photonic Micromotors Liquid crystalline polymers present an attractive option for the development of soft micro- and nanorobots. In article number 2207095, Kristiaan Neyts co-workers report on chiral photonic microparticles that show light-induced uni- bidirectional spinning speed control. The results offer a new approach to create light-powered rotary micromotors at micrometer scale.

Low-Cost Flexible Electronics Multiple generations of ultra-thin crystalline silicon nano/micro-membrane sheets with high areal density can be formed from a single <111> mother wafer using an unusual anisotropic etching technique, which utilized for various electronic applications in flexible devices. More details found article number 2302597 by Ki Jun Yu, John A. Rogers, and co-workers.

Composition-driven transition to the crystalline state is characteristic of amorphous metal alloys and widely observed in thin film. However, zone (compositional range between single-phase films) remains unexplored. Here, we demonstrate that this offers an excellent scenario for fabrication hybrid crystalline-amorphous architectures. The peculiar morphology these nano(micro)-structured films pr...

Abstract Poly(lactic acid)/poly(butylene adipate- co -terephthalate) with a content ratio of 90/10, and its calcium carbonate (CaCO 3 ) composites nano- micro-sized particles were prepared by melt mixing. The dependence thermal mechanical properties the on particle size addition CaCO filler was investigated. composite containing five parts (abbreviated as 90 L 10 B 5m C, similarly hereinafter) ...

Blends of polypropylene (PP) and polyamide 6 (PA6) with multiwalled carbon nanotubes (MWNTs) were prepared using different processing strategies in a twin-screw micro-compounder. The effect of MWNTs on the crystallization behaviour of the PP phase and the PA6 phase of the blend has been investigated through non-isothermal crystallization studies by differential scanning calorimetric analysis. F...