Varney told BBC Radio Kent: "There are other issues which need to be resolved which we will be working on.
This requires the dopant atom positioning relative to the gate edges and contacts with controlled 3D distribution, adequate conformality, appropriate concentrations and activation, all of which are important challenges which need to be resolved since they determine the device performance.
This phenomenon poses a problem which needs to be resolved, that of these gaps restricting the injection of carriers, which is not conducive to reaching its highest performance.
"Problems are always found which have to be resolved".
This is an historical issue which needs to be resolved.
Isner's is a sensible solution to a tricky problem, which needs to be resolved quickly.
"I think that's quite a significant thing which needs to be resolved relatively quickly," he told MSPs.
He acknowledged that the current level of debate and the increasingly hostile relationship between the press and the media was one which needed to be resolved.
He said: "There were a couple of passport issues which needed to be resolved and they have been and he will be landing imminently.
The advent of personal and medical genomics does pose challenges for society, which ought to be resolved through broad public engagement.
