Abstract: A three-dimensional (3D) printer system includes a nozzle that can passively align fibers being deposited with resin while creating fiber-reinforced composite components. The nozzle may include a nozzle body with main bore that directs material axially through a nozzle body, toward an alignment duct that provides the nozzle's outlet. The alignment duct may provide a passage in which the fibers are urged into a different orientation aligns the fibers generally parallel to each other in a different direction than the axial flow direction through the nozzle. The alignment duct's passage may be radially asymmetric, such as a tapering rectangular slot(s), which may provide guide surfaces to impart the reorientation of the flowing fibers.

Abstract: Methods for making molecular sieves are provided. The molecular sieves are comprised of thin semiconductors films in which a plurality of apertures is defined. The apertures are non-circular, nanoscale openings with tapered sidewalls that selectively pass certain molecules, while discriminating against the passage of other molecules.

Abstract: A climbing practice board provides a panel having both threaded holes for the receipt of anchors and support holes allowing attachment of the practice board to a variety of elevated supports.

Abstract: Methods for making molecular sieves are provided. The molecular sieves are comprised of thin semiconductors films in which a plurality of apertures is defined. The apertures are non-circular, nanoscale openings with tapered sidewalls that selectively pass certain molecules, while discriminating against the passage of other molecules.

Abstract: Methods for forming stable, suspended nanomembranes are provided. Also provided are stable, suspended nanomembranes made using the methods and electronic devices that incorporate the stable, suspended nanomembranes as electronically active layers. The methods utilize stiction-aided nanomembrane flattening combined with ultraviolet (UV) radiation-induced adhesion enhancement.

Abstract: A climbing practice board provides a panel having both threaded holes for the receipt of anchors and support holes allowing attachment of the practice board to a variety of elevated supports.