Helium ion microscopy (HIM) was used to investigate the interaction of a focused He(+) ion beam with energies of several tens of kiloelectronvolts with metals. HIM is usually applied for the visualization of materials with extreme surface sensitivity and resolution. However, the use of high ion fluences can lead to significant sample modifications. We have characterized the changes caused by a ...

Functional coatings provide durability to the bulk material and add other value-added properties which enhance surface's mechanical, electrical, optical, many properties. The functional response of these stems from ambiance, can be made sense in a sharp change temperature, pH, moisture, active ions, or mechanical stresses. Recently, efforts have been impart multi-functionality within single coa...

Abstract We describe a rapid and simple method to create Ag nanostructures by using direct mechanical patterning of ionic ink coating under gentle pressure, then thermal annealing reduce the metallic layer. The liquid-phase is easily obtained spin-coating that has appropriate concentration can be either printed or imprinted on desired substrate soft elastomer mold, reduced nanostructure subsequ...

We have observed nanopattern formation with robust and controllable spatial ordering by laser-induced dewetting in nanoscopic metal films. Pattern evolution in Co film of thickness 1≤h≤8 nm on SiO(2) was achieved under multiple pulse irradiation using a 9 ns pulse laser. Dewetting leads to the formation of cellular patterns which evolve into polygons that eventually break up into nanoparticles ...

In the generation of photoemitted electron bunches for the use in accelerators, metals are limited by their low QE. Previous work [P. Musumeci et al., Phys. Rev. Lett. 110(2013)] has shown that charge yield from infrared light is increased by a factor of 120 by etching nanopatterns into the cathode. However, utility of the electron bunch is also based on its thermal emittance, or angular spread...

Block copolymer (BCP) self-assembly is a low-cost means to nanopattern surfaces. Here, we use these nanopatterns to directly print arrays of nanodots onto a conducting substrate (Indium Tin Oxide (ITO) coated glass) for application as an electrochemical sensor for ethanol (EtOH) and hydrogen peroxide (H2O2) detection. The work demonstrates that BCP systems can be used as a highly efficient, fle...

The isolation of the two-dimensional semiconductor molybdenum disulphide introduced a new optically active material possessing a band gap that can be facilely tuned via elastic strain. As an atomically thin membrane with exceptional strength, monolayer molybdenum disulphide subjected to biaxial strain can embed wide band gap variations overlapping the visible light spectrum, with calculations s...

We report on the effect of synthetic extracellular matrix (ECM) scaffold in the form of uniformly-spaced nanogrooved surfaces in dermal wound healing. The rate of wound coverage was measured on various nanotopographical densities with vertical or parallel orientation using nanogrooves of 550 nm width with three different gaps of 550, 1100, and 2750 nm (spacing ratio: 1:1, 1:2 and 1:5). Guided b...