A fluid droplet may exhibit self-propelled motion by modifying the wetting properties of the substrate. We propose a model for droplet propagation upon a terraced landscape of ordered layers formed as a result of surface freezing driven by the contact angle dependence on the terrace thickness. Simultaneous melting or freezing of the terrace edge results in a joint droplet-terrace motion. The mo...

A terrace for Zn (a Zn terrace) is an arrangement (a1, a2, . . . , an) of the n elements of Zn such that the sets of differences ai+1 − ai and ai − ai+1 (i = 1, 2, . . . , n−1) together contain each element of Zn\{0} exactly twice. Various general constructions are given for Zn terraces of two special types: zigzag terraces and foxtrot terraces. Some special cases already appear in the literatu...

Uranium-series analysis of the coral Allopora californica Verrill from the 2nd, 32-m Eel Point terrace on San Clemente Island, California, has yielded an age of 127,000 k 7,000 yr. The Eel Point terrace is thus correlative with numerous terrace localities on the southern California mainland, with coral reefs on Barbados and New Guinea dated about 120,000 yr, and with substage 5e of the marine o...

counties (Torrent et al., 1980), and in soils formed in late The morphologic development of soils on marine terraces is a function of terrace age and geomorphic evolution. In this study, inter­ relationships between terrace landscape evolution and pedogenic sil­ ica cementation were investigated. Soil morphology, micromorphol­ ogy, selective dissolution, penetration resistance, and hydraulic co...

Mike Whelan1, Graham Ball2, Chris Beattie3 & Angus Dalgleish4† †Author for correspondence 1St George’s Hospital Medical School, Onyvax Ltd, Cranmer Terrace, London, SW17 0RE, UK Tel.: +44 20 8682 9109; Fax: +44 20 8682 9495; E-mail: mwhelan@ onyvax.com 2Nottingham Trent University, School of Biomedical and Natural Sciences, Clifton Campus, Clifton Lane, Nottingham, NG11 8NS, UK 3St George’s Hos...

Exploring the chemical reactivity of different atomic sites on crystal surface and controlling their exposures are important for catalysis and renewable energy storage. Here, we use two-dimensional layered molybdenum disulfide (MoS2) to demonstrate the electrochemical selectivity of edge versus terrace sites for Li-S batteries and hydrogen evolution reaction (HER). Lithium sulfide (Li2S) nanopa...

The growth of high quality Te on misoriented Si( 100) is important as an intermediate phase for epitaxial growth of CdTe. The misorientation angle plays a key role in the growth quality of CdTe/Si(100); this incited our curiosity to investigate the effect of the misorientation angle on the topography of the surface structure of Si( 100). Our main goal is to show the relation between the misorie...

Density functional theory is used to explore the energy landscape of Pd atoms adsorbed on the terrace of MgO(100) and at oxygen vacancy sites. Saddle point finding methods reveal that small Pd clusters diffuse on the terrace in interesting ways. The monomer and dimer diffuse via single atom hops between oxygen sites with barriers of 0.34 eV and 0.43 eV respectively. The trimer and tetramer, how...