Optical Trapping Part 3 !! Close Up Video - Now 1min 30sec video

[zcar300]

Wow very cool. Thank you for making the videos.

[streekstrek]

so you would just emit smoke particles at the focal point and try to make sure wind doesnt blow them away?

[jallaguri]

@streekstrek There are small vapour particles that is trapped inside the laser beam. This little particle, which is a few molecules in size, can be moved around by moving the laser. Loo fast move and the air will force the particle out of the trap. Scientists use this method to study cells by forcing them to stay still while examining them. Often used long wavelength IR-lasers which is not damaging organic materials. Even tetris has been played by controlling multiple cells.

[QIQrrr]

It's the pinch effect due to electrostatic charge in the plastic - I think.

[AR71X]

That is EPIC!

[Forssa1]

How mA is the laser running at?

[jallaguri]

Hi,

I don't know the mA. The voltage is about 3.3V on the 650nm laserdiode.

Jallaguri