Citation: Potemkin DI, Maslov DK, Loponov K, Snytnikov PV, Shubin YV, Plyusnin PE, Svintsitskiy DA, Sobyanin VA and Lapkin AA (2018) Porous Nanocrystalline Silicon Supported Bimetallic Pd-Au Catalysts: Preparation, Characterization, and Direct Hydrogen Peroxide Synthesis. Front. Chem. 6:85. doi: 10.3389/fchem.2018.00085 Porous Nanocrystalline Silicon Supported Bimetallic Pd-Au Catalysts: Prepar...

: We report that porous silicon acoustic Bragg reflectors and AlN-based transducers can be successfully combined and processed in a commercial solidly mounted resonator production line. The resulting device takes advantage of the unique acoustic properties of porous silicon in order to form a monolithically integrated bulk acoustic wave resonator.

In addition to its numerous technological applications amorphous silica (a-SiO2) is also well suited to the creation and study of exotic atoms such as positronium (Ps) and muonium. In particular, a dense Ps gas may be created by implanting an intense positron pulse into a porous a-SiO2 sample. However, such positron pulses can constitute a significant dose of radiation, which may damage the sam...

This work elucidates the optoelectronic properties of graphene/methylammonium lead iodide (MAPbI3)/titanium dioxide (TiO2)/porous Si heterostructure diodes. The porous silicon substrates can accommodate more MAPbI3/TiO2 than the polished silicon substrate such that the MAPbI3/TiO2/porous Si substrate heterostructures have better optoelectronic properties. Photocurrents from 300 to 900 nm were m...

A sodiothermic reduction method has been developed for the preparation of porous silicon using aluminosilicate zeolite NaY as a precursor. The porous silicon with a specific surface area of approximately 570 m(2) g(-1) shows distinct capacitive behavior when used as an electrode material for supercapacitors.

Metal-assisted chemical etching of silicon is an electroless method that can produce porous silicon by immersing metal-modified silicon in a hydrofluoric acid solution without electrical bias. We have been studying the metal-assisted hydrofluoric acid etching of silicon using dissolved oxygen as an oxidizing agent. Three major factors control the etching reaction and the porous silicon structur...

Electrodeposition of platinum and silver into hydrophobic and hydrophilic microporous silicon layers was investigated using chemically-modified microporous silicon electrodes. Hydrophobic microporous silicon enhanced the electrodeposition of platinum in the porous layer. Meanwhile hydrophilic one showed that platinum was hardly deposited within the porous layer and a filmy growth of platinum on...

Nano-silicon is a nanostructured material in which quantum or spatial confinement is the origin of the material's luminescence. When nano-silicon is broken into colloidal crystalline nanoparticles, its luminescence can be tuned across the visible spectrum only when the sizes of the nanoparticles, which are obtained via painstaking filtration methods that are difficult to scale up because of low...

20-Gbps non return-to-zero (NRZ) — binary phase shift keying (BPSK) using the silicon Mach-Zehnder modulator is demonstrated and characterized. Measurement of a constellation diagram confirms successful modulation of 20-Gbps BPSK with the silicon modulator. Transmission performance is characterized in the measurement of bit-error-rate in accumulated dispersion range from −347 ps/nm to +334 ps/n...