Recent progress in nanotechnology and electrochemical methods can be applied to fine control of the size, crystal structure, and surface properties of iron oxide nanoparticles. Here we appliedcathodic electrochemical deposition (CED) as an efficient and effective tactic for synthesisand double coating of surface of superparamagnetic iron oxide nanoparticles (SPIONs). In first step, bare Fe3O4 n...

The last decade has seen rapid expansion and development in the field of density functional theory (DFT) simulation on the complex chemical processes that occur at surfaces and interfaces. The understanding of the phenomena in surface science and heterogeneous catalysis has benefited tremendously from these quantum mechanic calculations. This article reviews current progress in the theory of re...

Chemical reactions at ultrasmall volumes are becoming increasingly necessary to study biological processes, to synthesize homogenous nanostructures and to perform high-throughput assays and combinatorial screening. Here we show that a femtolitre reaction can be realized on a surface by handling and mixing femtolitre volumes of reagents using a microfluidic stylus. This method, named microfluidi...

Reactive molecular dynamics simulations were used to investigate reactions between di- tert -butyl disulfide and ferrous surfaces. Tribochemical characterized with without a model base oil, n -dodecane, on either Fe(100) or H-passivated Fe 2 O 3 Reaction yield increased both temperature pressure for all systems. The presence of the oil did not significantly affect reaction pathway, but impeded ...

influence of media messages History and Orientation The two-step flow of communication hypothesis was first introduced by Paul Lazarsfeld, Bernard Berelson, and Hazel Gaudet in The People's Choice, a 1944 study focused on the process of decision-making during a Presidential election campaign. These researchers expected to find empirical support for the direct influence of media messages on voti...

Satoru Inoue, Grigory Ovanesyan, and Michael J. Ramsey-Musolf Physics Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA (Received 15 September 2015; published 22 J...

Surface imprinting used for protein recognition in functional cavities is highly effective biomacromolecules to avoid template encapsulation during the formation of a molecularly imprinted polymer (MIP) matrix. Herein, we introduce facile surface-imprinting method based on two-step spin-coating and photopolymerization design efficient sites polymeric films detect trypsin (TRY). Well-distributed...

uPAR's signaling two step T he uPA receptor (uPAR) is a loner. Jutting from the plasma membrane , it has no apparent connection to the cell interior. But, as Madsen et al. demonstrate on page 927, uPAR induces cells to cling tightly to a surface. The behavior might recruit other receptors and explain how the seemingly isolated uPAR exerts its infl uence. Stimulating uPAR galvanizes cells—they a...