Trapping Particles In a Beam of Light-The Optical Tweezers Experiment

[@vesh]

This channels videos never fail to absolutely amaze me...

[@Q--_--90909]

*Great*

[@crafty4722]

Yea

[@crafty4722]

Ikr it’s awesome

[@fluoroantimonic9950]

You are almost everyway

[@crafty4722]

I have officially commented on every comment.. not for long

[@annaw.1951]

I've always wondered how these things manage to not push the particles away. Thank you for the detailed explanation!

[@trevorcompton9186]

Cool logo thing

[@annaw.1951]

@@trevorcompton9186 Thank you ^^

[@Q--_--90909]

Oh yeah?!

[@Xenodermus-V2]

This has to be the pioneering of trully "accessible" holograms :) thanks for sharing ! :)

[@florinarnautu8393]

Yep, this seems the perfect way to make holograms , just not in open air, put them in an enclosed space(glass box/dome/jar/etc.) And we may be able to create them . Now just for fun imagine how scarry a hunted house can become now, as he said, you can use invisible light and make a shape and light the sape with other source of light 🤣

[@matthewboyd8689]

Holograms, tractor beams, and death lasers all in one.

[@lJustSilentl]

@@matthewboyd8689 An entire fleet of planet destroying star destroyer

[@Trexracing]

Qứerfcvy

[@ngotranhoanhson5987]

@@GGCannon this is cool, any other articles or sources about how it works?

[@hunters6787]

BYU represent! I’m an electrical engineering student and have taken classes from Dr. Smalley, he’s one of my favorite professors 😁

[@crafty4722]

Nice

[@lizichell2]

Don't you have to abstain from fun and believe that the world is only eight years old to go to BYU. Strong religious affiliation with a place of science and learning never sat well with me

[@MeppyMan]

@@lizichell2 there seems to be more BYU mentions and references in his videos lately. I have American friends that are Mormons but I will never understand it. Love that I live in a mostly secular country and culture.

[@CyberDragon-tn7rz]

Hey me too! Cool. I've also been one of his TAs

[@switch1837]

@@lizichell2 ummm not at all actually, on both counts. I don't know where you get your misinformation from, but byu just gives a 50% discount for people who are LDS. And just no to the 8 year thing, thats dumb that you don't know a single thing about a religion you're making fun of.

[@Chris.Pontius]

I love how he always amazes himself with these experiments, as well as us

[@everythingonit3159]

🤣

[@larryn1348]

I appreciate the layman explanations, so even idiots like me can understand. And I'm always left with a deep sense of amazement. Anything we can conceive, can eventually be achieved. Humanity is as amazing and brilliant, as it is horrible and repugnant. Scary, and beautiful.

[@harisaisenthilkumar2880]

deep

[@shiruuuuu_0]

@@harisaisenthilkumar2880 too deep

[@Crimsusy]

I dont understand the *SQUARED SQUARED SQUARE 2 656177 SQUARED M AZ+KSNXJ°*

[@harisaisenthilkumar2880]

@@shiruuuuu_0 XD my brain had to read that twice to understand that

[@harisaisenthilkumar2880]

@@Crimsusy eyo what

[@beastworm]

"If they move the particle fast enough ~ they can get that particle to fly around and look that is like a continuous image" And we go full circle back to CRT's (but now in 3D :P )

[@alwaysdisputin9930]

Yeah maybe our whole reality is made out of 1 particle travelling at infinite speed?

[@fel9432]

CRT uses multiple electrons to excite the screen material shooting it from an electron gun, not just one ....

[@Sopixil]

@@fel9432 but it does use a single beam screening side to side quickly

[@DebjitMajumdar]

@@alwaysdisputin9930 It starts with one Thing you dont know why, It doesn't even matter how hard you try

[@_vizec]

@@DebjitMajumdar keep that in mind, I designed this rhyme to explain in due time all I know

[@charlesgantz5865]

You make it sound so simple it's hard to believe the discovery was awarded a Nobel Prize.

[@mohammadmahiristehad9196]

This channel is so much underrated.

[@adb012]

This channel is great. But 3.5 million subs for a Science channel = underrated???? What does it take to be rated?

[@Jack_Krauzers]

@@adb012 he may have million of views but he doesn't always get million of views such like Veritasium

[@johanngerell]

Is it really? 3.5 M subs :)

[@awatercolourist]

This is soooo cool! Everything about this video is awesome! Thanks for letting us know Einstein’s complete equation.

[@charles.oliveira]

That's amazing! Creating an image was the first thing I thought of when I saw it stabilize. Myself: "Oh, I just invented the actual hologram" Myself 10s later: "Oh crap, they're already on it" Awesome video!

[@Vivungisport]

A true 3D hologram.

[@redfluxbluedawn414]

Just 1 problem, interacting with the hologram would cause the particle to fly away, it's not 100% light. Still, one of the coolest versions I've seen so far. Now try to imagine the intensity and scale of a lightbeam needed to capture a spaceship ^^

[@LurpakSpreadableButter]

@@redfluxbluedawn414 The lightbeam would probably vapourise the spaceship in 12 parsecs

[@95JakX]

Such an effective science communicator that doesn’t patronise his audience, everyone here should be glad to have discovered this gem of a channel whether you’re new or a veteran. Either way, stick around and learn with us!

[@leptonica_]

I am always amazed with this kind of technology.

[@tomtoups]

Wow you just explained how light has energy despite not aving mass so much better than a a video done by the Science Asylum. Not only are your experiments so awesome, but you have pretty excellent pedagogical skills.

[@hritikkejriwal3956]

This channel never fails to amaze me like wow and the explanations are so practical like i could never imagine the direction of force before like that just amazing

[@devilntor4660]

this channel puts public schools to shame, learned more here than in 5 years at school

[@christianromano1066]

Holy cow, you just blew my mind, thank you for that!

[@arty1799]

Ditto.

[@daltonanderson3476]

I worked with an optical trap in undergrad on water droplets to study aerosols in cloud formation. Always amazed me every time I turned it on.

[@BuildingDR]

these videos are always so interesting! keep up the good work man

[@crafty4722]

Ikr

[@vivekyadav]

If I'm not wrong 2018 Nobel prize was given for research in light tweezers. And now thanks to you I understood how it works. What an amazing demo. Thank you.

[@vinceofdeath1361]

Another spectacular episode! Thank you for all the hard work you put into this channel. On top of being just plain entertaining you've actually taught me so much and I really appreciate that.

[@gurukrishna9267]

It's great to see someone who explains experiments done by other scientists and noble laureates. Dr. Arthur Ashkin won Noble prize for Optical tweezers,figuring out how to harness the power of light to trap microscopic objects for closer study, calling his invention optical tweezers this phenomenon was first reported by him in 1970. It's a request to give credits to those people who discovered these amazing stuffs in your videos. By the way I'm a Physics major.

[@55Ramius]

This is very cool stuff. Makes you wonder what devices could come from it in the future.

[@Q--_--90909]

*Futurism*

[@chrismidyette1098]

This channel never fails to blow my mind. Keep bringing us this wonderfully obscure knowledge.

[@Regularsshorts]

I always thought about the mass of photons and the relation of that with e=mc^2,this always triggers me.thanks for clarifying that!

[@patrickgilles4870]

Of course if you break down momentum into p=mv you get the same problem… but photons have their own equation for momentum p=h/lambda

[@colorfullife8703]

I am just starting my PhD on topic related to atomic tweezers and I can't thank you enough for this video.

[@EveningOfficer]

I could see this being used for sci-fi holograms in the near future. Seems much more promising than any other 3D hologram tech I’ve seen

[@Skylancer727]

Technically that would be a volumetric display, holograms are 2D panels with depth,, volumetric displays are fully 3D displays with no background. The issue with this one though is you can't turn it off once it's on or we lose the particle in the laser. Plus it would get finicky with multiple lasers crossing each other. Probably still better to go to holographic displays for viewing content. Plus you can't really make shows or movies with a volumetric display as you don't get room design or backgrounds, just the focus.

[@guz_petricor]

I hate it when the best videos of a channel underperform in comparison with the other videos, and this is awesome.

[@pokestartv3987]

How?! I was just thinking about how a Star Wars tractor beam works and then you uploaded this!

[@plcflame]

This video was a series of "wtf!?!?" each time more impressive than the previous one Awesome job!

[@H4WK6969]

This is the most interesting thing ive seen today.

[@crafty4722]

Ikr

[@Q--_--90909]

Indeed

[@paulwalker5225]

Might want to subscribe, the dude's a genious.

[@Q--_--90909]

@@paulwalker5225 I already am subscribed.

[@DANGJOS]

Lol that's not saying much. This is the most interesting thing I've seen all week, and maybe all month

[@ProgressiveEconomicsSupporter]

I love the images of butterflies. In our lab we used optical tweezers to separates specific single cells away from others

[@pizzaboi23yt]

Even though i have no idea what he's talking about its still interesting

[@unitedspacepirates9075]

Learn physics, the only information matters.

[@tombradford7035]

This is the best one yet - absolutely mind-blowing and practical too.

[@tricks1669]

Woah.. So that's the secret to the Reality Stone or Iron Man's BARF. Maybe even Light Sails for Space Exploration 🤯

[@NSG-kc6zl]

Bruh the reality stone just changes perception/what light looks like

[@NSG-kc6zl]

That’s why the reality stone is the worst one

[@feelingzhakkaas]

Just OUTSTANDING

[@DougPalumbo]

Fascinating! Love this channel!

[@Leblackstone]

This has to be one of the best videos on this channel and the whole internet.

[@davestorm6718]

I've always wondered about light being massless when the SI units for momentum are kilogram meter per second.

[@westonding8953]

Same here.

[@chitlitlah]

I think it has to do with the Lorentz factor. As something approaches the speed of light, the Lorentz factor increases to infinity. In order to get something's mass as it moves at relativistic speeds, you multiply its rest mass by its Lorentz factor. As matter approaches the speed of light, its mass approaches infinity. Photons don't have mass though, and their Lorentz factor is already infinite, so you end up with zero times infinity. This is indeterminate, and as you learn in calculus, it can be 0, infinity, or anything in between. In this case, it seems to be something in between. That's how I've always thought of it anyway.

[@therealmrduber]

Its displacement.

[@therealmrduber]

Inordinate particle wake

[@therealmrduber]

If “nothing “ goes through something it leaves a trail

[@Jimbonj]

I'm very impressed with your proof of concept performed in the home lab

[@maxmccann5323]

I love how all his videos sound so impossible or scarily complicated yet you could literally do them at home

[@scootermom1791]

Only if you have the right equipment, which is expensive.

[@theTinderBoxMedia]

Thank you so much for your video's, they really spike my curiosity and leave me hungry for more science. Keep up the good work!

[@illogicmath]

The deck of cards is totally essential for this experiment

[@Games_and_Music]

In order to make a particle float in the air inside of a laser, we first need a fresh deck of cards.

[@illogicmath]

@@Games_and_Music yeah, because it's magic isn't?

[@watchmakuh637]

This channel shows more mind blowing experiments than any science videos mentioned on KZbin.

[@emanuelovici2176]

This has to be the coolest ting ever invented since the computer!!

[@unitedspacepirates9075]

Interference between two lasers can precisely locate particles into complex structures. Combine two monochromatic coherent light sources 180 degrees out of phase to induce destructive interference and calculate where the energy goes.

[@BlandBloke]

If light has no mass then it should have no momentum as well since p = mv Explanation appreciated from anyone 🙂

[@IncrediPaulAZ]

I was just wondering the same thing

[@TheActionLab]

for particles with no mass, the momentum is p=(planck's constant)/(wavelength)

[@sciencelove328]

@@TheActionLab thank you so much!

[@BlandBloke]

@@TheActionLab Tbh i did study this in my class and had completely forgotten about it till now. Now I feel really stupid especially when I was the topper in my class😂

[@IncrediPaulAZ]

@@TheActionLab dang, I was hoping we just proved that light has mass lol 🙃

[@solapowsj25]

Being correct is what makes this explanation so clear and informative. Cheers🥂.

[@noelakn]

Can't believe im early i was just watching your radiation about 5g and saw new video. Thanks man. Really appreciate

[@abhishekambekar7464]

It's very efficient way make every one understands that how that works , it cool keep doing such kind of stuff 👍❤️

[@Julio7514]

Man I'm running late for work I should hurry *-Trapping particles with a beam of light* Sure let's trap particles with a beam of light

[@crafty4722]

Lol

[@soni41285]

I learned more about science on this channel than in my whole life. If you are to start a school, i'd enroll my kid in that for sure.

[@1.4142]

We finally have real holograms after decades of scifi.

[@MDG-mykys]

Aren't they technically physical to the touch?

[@girishtripathy275]

I was searching for the optical tweezer experiment for my lab then found this video! Appparantly the best video i found for the explaination

[@ilsunnylo3562]

Isn't this the dream hologram?

[@unitedspacepirates9075]

Interference between nodal points precisely locates particles into complex structures.

[@vaghulkv6814]

James, I have a query, but first, I absolutely admire the enthusiasm behind your explanations, and the efforts of the demonstration! Thank you for that😊. So, I had recently attended a demonstration on optical levitation, and as I read more, I came across this description from Wikipedia on “Optical tweezers” - “The narrowest point of the focused beam, known as the beam waist, contains a very strong electric field gradient. Dielectric particles are attracted along the gradient to the region of strongest electric field, which is the center of the beam. The laser light also tends to apply a force on particles in the beam along the direction of beam propagation.” I noticed that your explanation describes the levitation analogous to the mechanical imparting of momentum, while Wikipedia emphasizes the levitating particle’s dielectric properties interacting with the beam’s E-field. My doubt is, what we notice at a macroscopic level as mechanical, does it converge to electromagnetic interactions with material properties in the microscopic view, as the same effect?

[@itsreeah2663]

Hi. I just wanted to say I’m a massive giant Science fan and I love watching your videos despite being a blind female. I have started a movement called Science4All to encourage those who are in minority groups go into science. I just thought I would tell you that continue what you are doing and if they think science is lame let them think science is lame because it is beautiful. Have a nice day

[@cc2onouuicc2onouui93]

Hello, could you explain this please "I love watching your videos despite being a blind female"

[@itsreeah2663]

@SK TAMIL MOVIEVERSE ty

[@itsreeah2663]

@@cc2onouuicc2onouui93 I can hear what’s going on in the video

[@cc2onouuicc2onouui93]

@SK TAMIL MOVIEVERSE She is cool man check out her video and don't regret being nice

[@itsreeah2663]

@@cc2onouuicc2onouui93 oh my goodness, thank you so much! Also I’m glad that you like my channel. About your question about lenses, I do wear glasses and it helps my vision a little bit, but my vision is so poor that glasses don’t work🙃

[@ClosestNearUtopia]

Finally the quality we all were waiting for! This in an incredible idea and theory!

[@patfre]

“Light always moves at the same speed” - Action Lab 2021 Glass and water: Are we a joke to you?

[@metamorphicorder]

Within a medium under given conditions.

[@Masterpeace0_0]

"In space"

[@eagleeye8686]

@@Masterpeace0_0 *in vaccum (vaccum can be created on earth too)

[@RoverIAC]

hang on, you mean this speed of light thing only applies in a vacuum?

[@himanipandey8932]

@@RoverIAC speed of light decrease with increase in optical density of medium but its probably because of absorption and emission of photon.

[@dandeeteeyem2170]

Gobsmacked - once again you manage to do amazing, improbable demonstrations in your shed! Every time I see one of your videos in blown me away as you demonstrate that there's still science which looks akin to magic that anybody can do at home. Fantastic

[@EzeePosseTV]

Just tried this with my own laser and after several attempts it worked. I just need the device that moves the particle at high speed to make holograms.

[@EzeePosseTV]

@Kepler 186-F Hello..

[@vivimannequin]

What kind of laser?

[@EzeePosseTV]

@@vivimannequin I used a green burning laser with focusable aperture to create a very small focus point cone. At it's thinnest point the laser can burn dark/black coloured items, plus my laser output's 500nW. It's good at picking up an atom.

[@aaryangarhewal]

This channel always surprises you.. 👍

[@minhthai4264]

Particles: _vibin around_ Light: *so you have chosen death* **proceeds to levitate the whole particle army**

[@crafty4722]

Lol

[@Zendoodler]

I really enjoy your channel content & love the "shorts". Your content is very underrated. It isn't surprising considering we have whole networks dependent on a particular actor or pop star and who they are dating.

[@LeoTheSunHashira]

He easily suggested how to make holograms. His brain, it is a wonder why this guy is not more famous when he should be.

[@sovietbot6708]

That's because other people already figured it out

[@outboundprojectworkshop1270]

@@sovietbot6708 yeah, he just shares other ppls work, which is honestly still very impressive that he can understand it and dumb it down for ppl like me to understand

[@spongebobseyelashes8548]

This may be the coolest thing I have ever seen in my life

[@FedeG86]

Me reading the notification in my smartphone: oh, Action Lab has created a light weapon! 😮 The Pentagon: we want to know your location. 🧐 Out of joke, thanks for another interesting video of physics of light! 😀👍

[@mirochlebovec6586]

it is amazing how this guy removes that factor of laboratory but still shows biggest marvels of tecnology in his garage🧑‍🔬

[@gatoscratch8664]

yes

[@crafty4722]

Yes

[@tanikaradia]

yes, you're 1st

[@gatoscratch8664]

@@tanikaradia yes

[@gatoscratch8664]

@@crafty4722 yes

[@Q--_--90909]

1

[@voltmaster5005]

This is incredible! This is feels like something from a sifi film! We're truly living in the future!

[@winarsih1285]

well hologram are gonna be real

[@andreassheriff]

That's pretty darned cool. I see huge prospects for vr/AR. Tell, HTC/Valve/HP/etc.

[@thatoneborosplayer2577]

Cool

[@crafty4722]

Yep

[@Q--_--90909]

3

[@thatoneborosplayer2577]

4

[@thatoneborosplayer2577]

5

[@Q--_--90909]

6

[@shrinidhikulkarni5703]

Such a complex topic explained with such an ease. Keep entertaining community with your knowledge.

[@lunahking500]

Hamburger Cheeseburger Lettuce and Tomato

[@bored5781]

Hamburger Cheeseburger Big Mac Whopper

[@Q--_--90909]

Wow

[@crafty4722]

Hamburger cheeseburger Big Mac whopper

[@Q--_--90909]

9

[@prashantjain983]

There is some time when you think i have seen enough. But this channel always amaze me . Loves watching action lab. Seriously wanted the reason behind this for long time . 🙂

[@Zachary.Jordan]

10th comment gamers

[@gamervolt2435]

nope

[@crafty4722]

nope

[@Q--_--90909]

12

[@krist6074]

This is truly amazing!!!! Thank you so much for sharing!! I never thought this would be possible!! So incredible to see that particle float in light!!!

[@ciel1116]

First

[@crafty4722]

Your 3rd

[@gamervolt2435]

nope

[@Q--_--90909]

4

[@DANGJOS]

@ The Action Lab Wow!! Talk about a coincidence man! Just this summer, I was doing optics research with a researcher that actually helped pioneer some optical tweezer research a couple decades ago! We were working with optical vortices for a different purpose over the summer, but one of the papers I was assigned to read was one of his papers on optical tweezers. It's so weird that you make a video about it right after I had that research experience. By the way, one of the things I read is that you can also use optical tweezers to move tiny beads to indirectly move cells as well. Really cool video, thanks!

[@adamhlj]

As a former student of BYU, I hate that school so much. BUT DAMN, that was so rad!!!

[@Stand.Your.Ground.]

This blows my mind! Thanks again ActionLab! Amazing amazing amazing!

[@supastazz]

have been a subscriber since 120k and I am still amazed like how he gets this ideas

[@bluefalcon-01]

Absolutely love your presentations. This one has answered a couple of points that have been puzzling me.

[@stickguy9109]

I like the fact that we have come so far that we can move individual cells with trapped particles

[@TerkanTyr]

If this could make holograms possible, I can't imagine what other physics could make other things possible. And just knowing the sheer amount of ridiculous inventions we have now, simply waiting for energy storage density to make them truly viable, it's insane. Thank you to everyone discovering and researching little things like this. I wish we could reward your work more reliably, frequently and generously.

[@calderarecords]

This is intriguing. There is an obvious flaw if we want to use this more however which you pointed out.. air dispersion. The particles can be dislodged very easily, however, I would surmise that creating a static field around the area would resolve this to varying degrees.

[@realchristopher4334]

Ah! Styropyro! That mad laser and high voltage man!

[@CmdrCorn]

You really are Starfleet's finest, sir. Keep up the good work.

[@camilomartinez3925]

This is one of the greatest things i've ever seen!

[@do_d_dola_d_dan5105]

That has got to be one of the coolest things I have ever seen!

[@GarrettBShaw]

Wow. Thats cool stuff, also the BYU demonstration is awesome!

[@TDrake-iq6cp]

Thanks for the video. You (and others watching) might want to look again at the difference between optical tweezers (sometimes called optical dipole traps) and magneto-optical traps (sometimes called MOTs). This video uses the physics behind MOTs when talking about optical tweezers--which is related but not exactly correct. In fact, optical dipole traps can hold particles still far below what is known as the photon recoil limit. Good luck and cheers!

[@bunnykiller]

Ive heard of optical tweezers and thought it was really kewl but seeing it function is even more awesome... now to find a lens for my lasers to try it myself...

[@derrickbeaubearic4100]

This instantly became one of my favorite videos of yours! That is too cool!

[@BABALOOEY46]

That’s awesome.... I love how you relate a heap of stuff to a basic experiment.

[@ranjeetsinghchoudhary8004]

I've been following your channel from a very long time and this episode is so fascinating i am going to share it on my social media ❤️ love ur work bro keep it up

[@Ha1ivan]

I am going to say this again, he truly knows how we learn.

[@FirstLast-cc6cv]

That was actually very relaxing to see

[@thisartistsdream]

Thank you so much for this! Your videos are amazing. I started to watch this in excitement in hopes to be able to verbalize with terms you might mention what my own art series is about. My first piece available on clothing and such is simply titled "Particles" on my store but officially called "Reflecting on Perceptions of Reality." Again, thank you!!! So exciting.