ABSTRACT
In current biotechnologies, it has been recognized that the analysis
of single biomolecules is of critical importance in fundamental
genetic research, clinical analysis, and industrial biotechnology
development [1, 2]. Therefore, it is usually required to isolate a
single biospecies from amixture of biomaterials for further analysis.
Recently, isolation of a single biospecies has been achieved down
to the single-molecule level due to great progresses in a number of
techniques [3-5].
