What are the challenges in optical trapping of virus and prions?

Write a report: A successful report will include
-Introduction: Describes the background and motivations for the topic surveyed. Most importantly, the main technical obstacles concerned with the topic must be identified.
-Survey: Various methods developed to overcome the difficulties and their relative advantages and disadvantages will be described.
-Your solution to the technical problem: Here, you will use your knowledge and training in optoelectronics and photonics to create a solution.
-Outlook: In what direction, will the technological development lead?
-And reference, figures, captions.
-Format: Letter size, 1 inch margins all four sides, Arial (11 pts), line spacing can be varied from 150 to 200%, approximately 10 pages.

Link to a possible seed paper:
http://link.springer.com/article/10.1007%2Fs10404‐010‐0739‐4