Zeolites with Continuously Tuneable Porosity

Zeolites with Continuously Tuneable Porosity**

Zeolites are important materials whose utility in industry depends on the nature of their porous structure. Control over microporosity is therefore a vitally important target. Unfortunately, traditional methods for controlling porosity, in particular the use of organic structure-directing agents, are relatively coarse and provide almost no opportunity to tune the porosity as required. Here we s...

Ferromagnet in a continuously tuneable random field

Most physical and biological systems are disordered, even while the majority of theoretical models treat disorder as a weak perturbation. One particularly simple system is a ferromagnet approaching its Curie temperature, T C , where all of the spins associated with partially-filled atomic shells acquire parallel orientation. With the addition of disorder via chemical substitution, the Curie poi...

240-GHz continuously frequency-tuneable Nd:YVO₄/LBO laser with two intra-cavity locked etalons.

This work reports for the first time on study of a single-frequency Nd:YVO4 laser with intra-cavity frequency doubling, in which quasi-continuous frequency tuning over an ultra-broad range is implemented with two intra-cavity locked etalons and automatic stitching between ranges of smooth scanning of the laser's output frequency. The proposed and demonstrated method allowed to continuously tune...

An Atomistic Simulation Study of Carbon Nanostructure Growth in the Porosity of Different Zeolites

In this work, we present Grand Canonical Monte-Carlo simulation results for the adsorption of carbon vapour in the pores of various zeolites: AlPO4-5, silicalite and faujasite (in its siliceous form). The carbon-carbon interactions are described within the frame of a Tight Binding approach (fourth momentum’s method) while the carbon-zeolite interactions are modelled using a PN-TrAZ physisorptio...

Tuneable Composites Containing Magnetic Microwires