Structural disorder causes materials’ surface electronic properties, e.g., work function (ϕ), to vary spatially, yet it is challenging prove exact causal relationships underlying ensemble disorder, roughness or granularity. For polycrystalline Pt, nanoscale resolution photoemission threshold mapping reveals a spatially varying ϕ=5.70±0.03 eV over distribution of (111) vicinal grain surfaces pre...

A largely overlooked aspect of creative design practices is how physical space in design studios plays a role in supporting designers’ everyday work. In particular, studio surfaces such as designers’ desks, office walls, notice boards, clipboards anddrawing boards are full of informative, inspirational and creative artefacts such as, sketches, drawings, posters, story-boards and Post-it notes. ...

Control and switching of liquid droplet states on artificially structured surfaces have significant applications in the field of microfluidics. The present work introduces the concept of using structured surfaces consisting of noncommunicating roughness elements to prevent the transition of a droplet from the Cassie to the Wenzel state. The use of noncommunicating roughness elements leads to a ...

In this work, potential of the nanosecond laser processing technique on manipulating the surface wettability of 316L bio grade stainless steel is investigated. Results show that the steel wettability toward water, improves significantly after the laser treatment. Different analyses are assessed in correlation with wettability using Scanning Electron Microscope (SEM), Scanning Tunneling Microsco...

The exploitation of the photoelectric effect is a prominent method for in situ measurement absolute work function surface. In case metallic surfaces, Fowler theory routinely applied fitting or extrapolating measured yield data to determine value. However, reliable application method, attention must be paid experimental sensitivity behavior close threshold, which mainly determined by signal-to-n...