Isotropic neutron sources, such as 241Am/Be and 252Cf, although portable and relatively inexpensive, have low neutron intensity and they are not on/off switchable without special shutter systems (e.g.,252Cf source) [8].
Tom McPhail, head of pensions at Hargreaves Lansdown, says: "I'm not sure that switchable annuities will ever actually get off the ground.
In addition, surfaces modified by the resulted brush copolymers have a temperature tunable wettability based on thermo-responsive phase transition in solid, the similar WCA variation range of three brush copolymers implies that the composition of backbone does not much affect the switchable wettability of surfaces.
Therefore, such complexes hold promise not only as redox-switchable species, but also for ultrafast photoswitching of bulk NLO effects in appropriate organised media, such as LB thin films.
Targeted switching can, in principle, be used with any reversibly switchable optical transition, not just stimulated emission, as described by the RESOLFT principle (Hell et al., 2003).
"[And] what do we need to do in order to be able to make a device that's switchable — that you can not only store information on, but you can process information with as well".
Such a pH triggered switchable Pickering emulsion catalytic system not only shows good recyclability of the solid catalyst but also high catalytic efficiency, and could be recycled more than 10 cycles.
It not only has an eyepiece viewfinder, but a switchable one.
The device implements a switchable air gap capacitor and is therefore not limited in lifetime by dielectric charging as opposed to contact-type capacitive switches implementing high-k dielectrics.
The multi-step LC compensator consists of switchable units thus assuming that a single unit is not sufficient to ensure satisfactory results.
