Densely Packed Carbon Flower Particles A strategy to synthesize high-bulk-density carbon materials by self-assembling flower particles into ordered arrays is reported in article number 2000067 Zhenan Bao and co-workers. The developed show a large increase bulk density, they are promising for many energy storage-related applications.

We present optical measurements of nanoscale red blood cell fluctuations obtained by highly sensitive quantitative phase imaging. These spatio-temporal fluctuations are modeled in terms of the bulk viscoelastic response of the cell. Relating the displacement distribution to the storage and loss moduli of the bulk has the advantage of incorporating all geometric and cortical effects into a singl...

OBJECTIVES Bulk-fill composites have emerged, arguably, as a new "class" of resin-based composites, which are claimed to enable restoration in thick layers, up to 4mm. The objective of this work was to compare, under optimal curing conditions, the physico-mechanical properties of most currently available bulk-fill composites to those of two conventional composite materials chosen as references,...

objective: bulk-fill composites are a group of composite resins designed for easy and fast filling of large cavities. this study aimed to assess the color stability of bulk-fill composites subjected to xenon radiation and evaluate their color change (&deltae;) following polymerization. methods: in this in vitro experimental study, 30 specimens (4mm in height and 8mm in diameter) were fabricated...

Two-dimensional (2D) optical scanners with large-area mirrors and large angular rotation are of great interest for applications in display, printing, optical scanning and sensing, optical data storage, and free-space optical links between satellites. The Micro-Electro-Mechanical System (MEMS) technology is very attractive to reduce the size, weight, and complexity of the optical scanners. Sever...

We prove that the Besicovitch Covering Property (BCP) does not hold for some classes of homogeneous quasi-distances on Carnot groups of step 3 and higher. As a special case we get that, in Carnot groups of step 3 and higher, BCP is not satisfied for those homogeneous distances whose unit ball centered at the origin coincides with a Euclidean ball centered at the origin. This result comes in con...