In situ reaction studies of catalyst materials using closed-cell environmental specimen holders have been shown to allow atomic resolution to be obtained on e.g. catalyst materials, at elevated temperatures and pressures [1-4]. These holders incorporate MEMS-based devices into the holder tip, which serve to encapsulate a gas layer between a thin film heater device and an ultra-thin amorphous Si...

insulator, and this in turn carries a 1-, in. brass rod, Q, fixed and sealed in position by a screw cap, R, and 0-ring gasket. The tungsten-anode wire, S (0-1 mm. diameter), is sheathed by a copper tube, T (diameter i16in.) to which it is soldered at its upper end. This is held in the rod, Q, by a small grubscrew. By this means the whole anode assembly is easily taken apart for cleaning and cha...

A gas-pressure cell, based on a leuco-sapphire single-crystal, serving as pressure vessel and sample holder, is presented for real time in situ studies of solid-gas hydrogenation reactions. stainless steel corpus, coated with neutron absorbing varnish, allows alignment the single-crystal holder minimizing contributions to diffraction pattern. Openings corpus enable scattering well contactless t...

Transmission-mode direct analysis in real time (TM-DART) is presented as an alternative sampling strategy to traditional methods of sample introduction for DART MS analysis. A custom-designed sample holder was fabricated to rapidly and reproducibly position insecticide-treated nets normal to the ionizing metastable gas stream, enabling transmission of desorbed analyte ions through the holder ca...