Laser to burn insect

  • #1
Bilan
1
1
What would be the ideal wavelength and power of a laser to kill an insect on human skin without burning the skin ?
 
  • Like
  • Skeptical
Likes Rive and Dale
Engineering news on Phys.org
  • #2
I think the characteristics of the laser are almost inconsequential. If you can manage to target an insect on the skin, you can pretty easily hit it with a pulse that's so short it will fry the bug without any damage to the skin.

Consider, all you have to do is disable a wing or other body part, which is on the order of nanolitres of fluid. And patch of skin has many orders of magnitude more heat absorbency than that.

I think your challenges will be more in the area of targeting and safety. (How will you prevent eye damage?)
 
  • Like
Likes russ_watters and Bilan
  • #3
Thread is closed temporarily for Moderation.
 
  • Like
Likes Bilan
  • #4
Welcome to PF. :smile:

Bilan said:
What would be the ideal wavelength and power of a laser to kill an insect on human skin without burning the skin ?
There are several problems with this idea. First, it may not be possible to find some ideal wavelength that affects the insect much faster and easier than human skin.

But the bigger problem is that lasers can be very dangerous to our eyesight, and lasers that have any power at all need to be managed to minimize/eliminate that danger. You can't just have an instrument on the wall of your home that will detect insects and shoot bursts of laser light at them to disable/kill them. It is way too easy in such a situation for the laser light to make it into a person's eye either directly or via a reflection (like off of a watch or piece of jewelry). In fact, there are regulatory standards for the safety measures that must be taken when working around different strengths of lasers:

https://en.wikipedia.org/wiki/Laser_safety

So since there is a lot of danger involved in the idea and the discussion, this thread will need to remain closed. Keep thinking of creative ideas, though, since your ideas will get better and better the more of them you have. Just be sure to consider things like safety and practicality when doing your brainstorming. :wink:

EDIT/ADD -- If you have any questions about laser safety standards or about your idea, please feel free to send me a Personal Message (PM) by clicking on my avatar twice and "Start a Conversation".
 
Last edited:
  • Like
Likes pinball1970

Similar threads

  • Electrical Engineering
Replies
5
Views
780
  • Electrical Engineering
Replies
1
Views
1K
Replies
7
Views
1K
  • Optics
Replies
3
Views
943
  • Electrical Engineering
Replies
14
Views
1K
Replies
23
Views
4K
  • Special and General Relativity
4
Replies
128
Views
3K
Replies
1
Views
1K
  • Science Fiction and Fantasy Media
Replies
16
Views
3K
  • Electrical Engineering
Replies
6
Views
2K
Back
Top