Particles Trapped

What others have Trapped

  1. gold (2 to 5 μm in diameter): almost spherical
  2. silver (2 or 3 μm): irregularly shaped
  3. bronze (2 to 15 μm): almost spherical
    • Shunichi, S., Yasunori H., and Yoshio W., “Optical trapping of microscopic metal particles,” Opt. Lett. 19, 1807-1809 (1994).
  4. silicon particles of 5-20 µm; nonspherical particles trapped better
    • Zhang, Z., Cannan, D., Liu, J., Zhang, P., Christodoulides, D. N., Chen, Z., “Observation of trapping and transporting airborne absorbing particles with a single optical beam.” Optics Express. 20, 16212-16217 (2012).
  5. graphite particles: 5 microns, 25-30mW
  6. carbon nanoparticles: 1-5mW
    • Shvedov, V., Hnatovsky, C., Rode, A. V. & Krolikowski, W., “Robust trapping and manipulation of airborne particles with a bottle beam”. Optics Express 19, 17350-17356 (2011).
  7. graphite coated glass shells between 50 and 100 microns
    • Eckerskorn, N. O., Zeng, N., Shvedov, V., Krolikowski, W. & Rode A. V., “Effect of polarization on transport of particles in air by optical vortex beam”. Journal of Optics 14, 1-5 (2012)
  8. grass smut spores
  9. tryptophan
    • Pan, Y., Wang, C., Hill, A. C., Coleman, M., Beresnev, L. A. & Santarpia, J. L. “Trapping of individual airborne absorbing particles using a counterflow nozzle and photophoretic trap for continuous sampling and analysis”. Applied Physics Letters. 104, 1-4 (2014)
  10. gold-coated hollow glass spheres (300 nm diameter)
    • Shvedov, V., Davoyan, A. R., Hnatovsky, C., Engheta N. & Krolikowski W., “A long-range polarization-controlled optical tractor beam”. Nature Photon. 8, 846-850 (2014).

What we have Trapped

  1. black liquor → also puffing
  2. nano-diamonds (~100nm) → only nebulized
  3. graphite (44 micron; 325 mesh)
  4. tungsten (1-12 micron; mostly 4-6)
  5. printer toner (powder)
  6. dried sharpie ink
  7. rhodamine-g (powder)
  8. salt
  9. glass beads (10-30 micron)
  10. iron filings
  11. silver powder (4-7 microns)

What didn't trap

  1. aluminum powder (17-30 micron)
  2. magnesium oxide (45 microns)
  3. dry polystyrene
  4. silver powder (1.3-3.2 microns)

What we want to trap

itsatrap.jpg

  1. nano-tungsten
  2. aqeous polystyrene