Wetting properties of silicon films from alkyl-passivated particles produced by mechanochemical synthesis

Characterisation of surface wettability based on nanoparticles

“…Also, in some cases, the production of nanoparticles is even integrated into the patterning of nanoparticles on surfaces as part of the whole process. 96 One arising issue during the process is the uncontrolled aggregation or growth of nanoparticles, which might change the properties that the nanoparticle-modified substrate exhibits. As discussed previously, the size of nanoparticles should be adjusted and controlled since it might influence the behaviour of particles significantly.…”

“…An example showed that the surface of silicon nanoparticles was chemically passivated by alkyl groups, and those functionalised nanoparticles dispersed in octene were drop-wise deposited to create superhydrophobic surfaces. 96 Sawada et al prepared fluoroalkyl end-capped oligomeric nanoparticles, which were dip-coated onto glass plates via methanol solutions and triggered considerable superhydrophobic characteristics on the surfaces. 170 It is also noticed that the functionalised nanoparticles, which are not inevitably spherical or regular in shape, have been used for the fabrication of surfaces with programmable wettability between superhydrophobicity and superhydrophilicity.…”

Influence of Mineral Composition of Chars Derived by Hydrothermal Carbonization on Sorption Behavior of CO2, CH4, and O2

“… Before starting the adsorption measurement, the free gas volume in the measuring volume (marked green in Figure ) is determined twice by helium pycnometry, once at the measurement temperature set by the bath ( V F,bath , T bath ) and once at room temperature ( V F,room , T room ). The standard temperature is defined at T STD = 273.15 K and the nonideality factor is related to the compressibility factor Z , as given in eq , which depends on the actual temperature and pressure of the gas . The values , for the nonideality factor still widely used in sorption science are often traceable to the suggestions of Emmett and Brunauer from 1937. In this work, the far more accurate reference equations of state for CO 2 , He, CH 4 , O 2 , and N 2 were used to calculate Z for different temperatures, using the software package Trend 4.0 .…”

The Mechanochemical Formation of Functionalized Semiconductor Nanoparticles for Biological, Electronic and Superhydrophobic Surface Applications

“…A nanoparticle solution was produced from the remaining centrifugation supernatant according to previous published protocols. 13 For characterization, films from the micrometer sized particles as well as the nanoparticle solutions were deposited on 25 mm x 25 mm glass slides as described above. The coated surface was dried for 10 min in air at room temperature and then exposed to a reduced atmospheric pressure for 10 min.…”

“…* 6 ALKYL FUNCTIONALIZED SILICON PARTICLES WITH SUPERHYDROPHOBIC PROPERTIES HEBM has been shown to be an alternative method to produce micrometer sized particles, which can form films with superhydrophobic properties. 13 Superhydrophobic surfaces usually exhibit by a combination of micro-and nanometer scale structures, which are vital for the superhydrophobic properties. 47 The deposited particles films obtained from HEBM show these structural features through a wide size distribution from the nanometer to the micrometer regime of alkyl functionalized particles.…”