Our paper highlighted on Cover of Physica Status Solidi - Rapid Research Letters

pss rrl cover enachi lowIn the Rapid Research Letter on p. 100, Mihai Enachi et al. demonstrate that anodization of Ti sheets in ethylene glycol and HF containing electrolyte leads to the formation of ordered arrays of double-walled TiO2 nanotubes. Interestingly, the inner diameter can be tuned in the range from 10 nm to 250 nm through the change of the electrolyte temperature while the outer nanotube diameter and the density of nanotubes remain temperature independent. The authors present evidence for the formation of a self-organized surface nucleation layer that is genetically connected to the outer nanotube shell at the origin of this phenomenon. These findings pave the way for manufacturing ordered arrays of TiO2 nanotubes with modulated inner diameter by a simple change of the electrolyte temperature.

http://www3.interscience.wiley.com/journal/112716025/home
http://www3.interscience.wiley.com/journal/112716025/home/cover/current.html

Read more: Our paper highlighted on Cover of Physica Status Solidi - Rapid Research Letters

Porous III-V Semiconductors
by I. Tiginyanu, S. Langa, H. Foell and V. Ursachi

http://www.porous-35.com/index.html

Fabrication and optical characterisation of porous structures by ussing electrochemical etching as a nanostructuring technique.

Over the last decade, a great deal of research efforts was focused on manufacturing and studying inorganic nanochannel-array materials attractive for applications in catalysis, separations, environmental-technologies, photonics, micro- and optoelectronics. Considerable progress was achieved in semiconductor nanostructuring using electrochemical etching techniques. This book is devoted to issues related to fabrication and optical characterisation of porous III-V semiconductors fabricated using anodic etching.

Read more: Porous III-V Semiconductors: online book

Our results on cover of international journal "Physica Status Solidi - Rapid Research Letters"

pps2_lowIn the Rapid Research Letter on p. 242 ff., titania nanotubes are proposed as building blocks of focusing elements. The design of photonic crystal (PC) - in particular concave - lenses on the basis of metallized nanotubes is found to result in excellent focusing of visible electromagnetic radiation. The lenses prove to be tolerant to disorder in the spatial arrangement of the nanotubes. Moreover, some disorder is even shown to improve the focusing properties.

Read more: Focus on negative index materials

metamaterials_low

A new, simple technique to produce ordered arrays of metal nanotubes has been developed by scientists in Moldova. The method works by electroplating in conductive nanotemplates routinely fabricated by anodic etching of semiconductor substrates in salty water. The result could be important for making plasmonic devices, photonic crystals, catalysts for energy conversion and chemical and biological sensors. 

Read more: Salty water puts metal nanotubes in order

de_ambasador_01smallLa 12 iunie curent, comunitatea stiintifica a marcat cea de-a 62-a aniversare de la fondarea primelor institutii de tip academic. De aceasta data Consiliul Suprem pentru Stiinta si Dezvoltare Tehnologica al A.S.M. a programat citeva actiunii pentru aceasta zi. De dimineata mass-media a fost prezenta la Centrul national de studiu si testare a materialelor din cadrul Universitatii Tehnice a Moldovei, caruia ambasadorul extraordinar si plenipotentiar al Republicii Federale Germania in Republica Moldova, Excelenta sa dl Nikolaus von der Wenge, Graful Lambsdorff, i-a transmis un set de utilaj din partea Fundatiei "Alexander von Humboldt" din Germania. E vorba de un sistem performant de laser, in valoare de 20 mii de euro, odata cu punerea in functiune a caruia va spori, indiscutabil,  nivelul tehnologic si de caracterizare a materialelor electronice si fotonice in acest centru cu impact pozitiv asupra dezvoltarii stiintei si a pregatirii cadrelor tinere. Deci,  sarbatoarea nu a trecut fara de un cadou pretios.

Read more: Un set performant de laser - unei echipe tinere de entuziasti