Metal curtain walls have been used to decorate the interiors and exteriors of large buildings. Most exteriors used in performing surface modeling of large buildings are linked or pieced by quadric surface. This surface, which is non-expansible, will cause wrinkling when stamped and used as a flat sheet metal of a metal curtain wall. These wrinklings are not distributed effectively because of th...

We employ density-functional plane-wave ab initio and tight-binding methods to study the adsorption and migration of carbon adatoms on single-walled carbon nanotubes. We show that the adatom adsorption and migration energies strongly depend on the nanotube diameter and chirality, which makes the model of the carbon adatom on a flat graphene sheet inappropriate. Calculated migration energies for...

We present a new way of nanoengineering graphene by using defect domains. These regions have ring structures that depart from the usual honeycomb lattice, though each carbon atom still has three nearest neighbors. A set of stable domain structures is identified by using density functional theory, including blisters, ridges, ribbons, and metacrystals. All such structures are made solely out of c...

The coassembly of C(60) derivatives through arene-perfluoroarene interactions has been used for the first time to develop millimeter-sized flat crystalline sheets. Time-resolved microwave conductivity (TRMC) measurements exhibited anisotropic features with over double the charge carrier mobility in the direction parallel to the plane of the crystal than perpendicular to the plane. This study de...

The first massive level of closed bosonic string theory is studied. Free-field equations are derived by imposing Weyl invariance on the world sheet. A two-parameter solution to the equation of motion and constraints is found in two dimensions with a flat linear-dilaton background. One-to-one tachyon scattering is studied in this background. The results support Dhar, Mandal and Wadia’s proposal ...

In this paper we present our initial prototypical explorations as well as the associated transformative design concept called KaleidogamiTM. This method is used for developing spatial objects that can be flattened, folded and reconfigured. We develop the metaphor and concept for a basic structural unit (BSU) such as using tetrahedral, cuboidal, prismatic, and pyramidal units to enable new forms...

The use of DNA as a nanoscale construction material has been a rapidly developing field since the 1980s, in particular since the introduction of scaffolded DNA origami in 2006. Although software is available for DNA origami design, the user is generally limited to architectures where finding the scaffold path through the object is trivial. Herein, we demonstrate the automated conversion of arbi...

An intermittent aerator was newly developed to reduce energy costs in a flat-sheet ceramic membrane bioreactor (MBR) for industrial wastewater treatment. Large air bubbles were supplied over short time interval by the improved technology at bottom of membrane. Performance tests carried out pilot system with two cassettes immersed tank 1-MGD demonstration plant Jurong Water Reclamation Plant (JW...