dearJulius.com Write For Us

Cell-sized 'microlasers' could regulate brain activity

SHARE:

© Provided by Engadget

By Jon Fingas, Engadget

Scientists have spent years creating ever-smaller lasers. Berkeley Lab's latest invention, however, is something special -- and could lead to a significant change in medicine. An international team at the school has developed "microlasers" that are smaller than a red blood cell. The researchers discovered that 5 micron-wide polymer beads mixed with exotic nanoparticles (sodium yttrium fluoride infused with thulium) could reliably emit bright light on specific wavelengths when exposed to infrared light. The concoction makes light bounce around the inner surface of the bead, creating collisions that can repeatedly amplify the light -- it's similar to the "whispering gallery" effect that lets you hear a quiet sound across a giant space with the right acoustics.

Even in their rough state, the bead lasers can work for at least five hours of continuous use, even if you immerse them in blood or other less-than-pristine environments. They don't wear out quickly, either. The team found that beads pulled "off the shelf" months or years later still function as lasers. And if you need to redirect the lasers, you can use the same infrared light you'd use to excite them.

Refinement is necessary before this is useful. Researchers are still looking at how they can tweak the nanoparticle elements and the makeup of the beads themselves to both optimize performance and determine the laser light they get. The implications could be far-reaching, though. Berkeley noted that you could use this to control neuron activity, which might help with brain diseases. It might also be helpful for sensors that detect chemical and environmental changes, or a new wave of optical chips. Any of these developments are likely years away, but there's a lot of potential in these minuscule pieces of plastic.

COMMENTS



Note: If you think this story need more information or correction, feel free to comment below your opinion and reaction.
Like & Follow to Stay Updated ...

Name

AI,3,Amazon,1,Apple,5,Emoji,1,Facebook,17,Games,35,Google,7,Instagram,6,Science,205,Security,4,Social Media,24,Tech,242,Technology,1167,Tesla,5,Twitter,4,
ltr
item
Technology - U.S. Daily News: Cell-sized 'microlasers' could regulate brain activity
Cell-sized 'microlasers' could regulate brain activity
https://1.bp.blogspot.com/-lcLF46_O_3o/WzCOGOPa2II/AAAAAAAAR50/qJYAqHWyW6Yogxc4OAL_CjVW4tVjLMyZACLcBGAs/s1600/1.jpg
https://1.bp.blogspot.com/-lcLF46_O_3o/WzCOGOPa2II/AAAAAAAAR50/qJYAqHWyW6Yogxc4OAL_CjVW4tVjLMyZACLcBGAs/s72-c/1.jpg
Technology - U.S. Daily News
https://tech.dailynews.us.com/2018/06/cell-sized-could-regulate-brain-activity.html
https://tech.dailynews.us.com/
https://tech.dailynews.us.com/
https://tech.dailynews.us.com/2018/06/cell-sized-could-regulate-brain-activity.html
true
4191228214535516123
UTF-8
Loaded All Posts Not found any posts VIEW ALL Read More Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share. STEP 2: Click the link you shared to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy