The clearest non-bottleneck mechanisms for achieving selectivity are competitions.
A major challenge, however, is achieving selectivity.
As in other aromatic oxidations, achieving selectivity is a challenge and using an appropriate catalyst to promote the production of the desired products is necessary.
One way of achieving selectivity in detection is by using arrays of cantilevers where each element is modified with partially selective interfaces [10] [12].
Catalytic oxydehydration at 320 °C under a flow of 100% O2 gave the best performance, achieving selectivity of 33.5% towards acrylic acid and 100% conversion of glycerol.
Achieving selectivity in targeting abnormal genes, cells, and tissues is a major obstacle to safe and effective clinical application of gene engineering and stem-cell mediated tissue growth.
The demonstrated ability to directly monitor cell stress and death dynamics upon drug exposure using simple electronic devices and, possibly, achieving selectivity to different cell dynamics is of great interest for several application fields, including toxicology, pharmacology, and therapeutics.
Competition based mechanisms for achieving selectivity come in at least two varieties: In a simple race mechanism each of the competitors independently completes a process that is comparable, along some dimension of variation, with the processes completed by the other competitors.
