Levitation - Revision history

Apm: /* Optical pincers / optical traps */ added note that it might be much less heating for better smaller nanocrystals

2025-05-09T14:27:01Z

Optical pincers / optical traps: added note that it might be much less heating for better smaller nanocrystals

← Older revision		Revision as of 16:27, 9 May 2025
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	The idea here is to use crossed laser beams to levitate nano-parts. <br>		The idea here is to use crossed laser beams to levitate nano-parts. <br>
	An issue with parts bigger than single atoms is absorption and heat-up. <br>		An known issue with bigger parts (diamond nanocrystals) bigger than single atoms is absorption and heat-up. <br>
	There may be alternatives for free space levitation relying only on magnetism and gravity ( see papers section). <br>		Still unclear in how far that holds for atomically precise nano-cytstals (and [[crystolecule]]s) on the smallest possible end holds too.<br>
			There may be alternatives for free space levitation relying only on magnetism and gravity (see papers section). <br>

	= Misc =		= Misc =

Apm: /* Papers */

2025-05-09T14:24:05Z

Papers

← Older revision		Revision as of 16:24, 9 May 2025
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	* [https://arxiv.org/abs/1506.08215 2015 – Loading an Optical Trap with Diamond Nanocrystals Containing Nitrogen-Vacancy Centers from a Surface] <br>arXiv:1506.08215 [cond-mat.mes-hall] <br>https://doi.org/10.48550/arXiv.1506.08215		* [https://arxiv.org/abs/1506.08215 2015 – Loading an Optical Trap with Diamond Nanocrystals Containing Nitrogen-Vacancy Centers from a Surface] <br>arXiv:1506.08215 [cond-mat.mes-hall] <br>https://doi.org/10.48550/arXiv.1506.08215
	* [https://www.rochester.edu/newscenter/researchers-use-laser-to-levitate-glowing-nanodiamonds-in-vacuum/ 2015 – press release – Researchers use laser to levitate glowing nanodiamonds in vacuum] <br> [https://www.youtube.com/watch?v=FPHJyaUDiVI 2013 – video – Optically Levitated, Glowing Diamonds for Nanoscale Research] <br>Nick Vamivakas' lab at the University of Rochester.		* [https://www.rochester.edu/newscenter/researchers-use-laser-to-levitate-glowing-nanodiamonds-in-vacuum/ 2015 – press release – Researchers use laser to levitate glowing nanodiamonds in vacuum] <br> [https://www.youtube.com/watch?v=FPHJyaUDiVI 2013 – video – Optically Levitated, Glowing Diamonds for Nanoscale Research] <br>Nick Vamivakas' lab at the University of Rochester.
	'''Issues with heat-up''' (though larger nano-diamonds ~5000x5000x5000 atoms with unknown amounts of unknown defects)		'''Issues with heat-up''' <br>
			(though larger nano-diamonds ~5000x5000x5000 atoms with unknown amounts of unknown defects)
	* [https://iopscience.iop.org/article/10.1088/1367-2630/aab700 2018 – Pure nanodiamonds for levitated optomechanics in vacuum] <br>Citation A C Frangeskou et al 2018 New J. Phys. 20 043016 <br>DOI 10.1088/1367-2630/aab700		* [https://iopscience.iop.org/article/10.1088/1367-2630/aab700 2018 – Pure nanodiamonds for levitated optomechanics in vacuum] <br>Citation A C Frangeskou et al 2018 New J. Phys. 20 043016 <br>DOI 10.1088/1367-2630/aab700
	* [https://www.nature.com/articles/srep21633 2016 Burning and graphitization of optically levitated nanodiamonds in vacuum] <br>Rahman, A., Frangeskou, A., Kim, M. et al. Burning and graphitization of optically levitated nanodiamonds in vacuum. Sci Rep 6, 21633 (2016). https://doi.org/10.1038/srep21633		* [https://www.nature.com/articles/srep21633 2016 Burning and graphitization of optically levitated nanodiamonds in vacuum] <br>Rahman, A., Frangeskou, A., Kim, M. et al. Burning and graphitization of optically levitated nanodiamonds in vacuum. Sci Rep 6, 21633 (2016). https://doi.org/10.1038/srep21633

Apm: /* Papers */

2025-05-09T14:23:42Z

Papers

← Older revision		Revision as of 16:23, 9 May 2025
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	* [https://arxiv.org/abs/1506.08215 2015 – Loading an Optical Trap with Diamond Nanocrystals Containing Nitrogen-Vacancy Centers from a Surface] <br>arXiv:1506.08215 [cond-mat.mes-hall] <br>https://doi.org/10.48550/arXiv.1506.08215		* [https://arxiv.org/abs/1506.08215 2015 – Loading an Optical Trap with Diamond Nanocrystals Containing Nitrogen-Vacancy Centers from a Surface] <br>arXiv:1506.08215 [cond-mat.mes-hall] <br>https://doi.org/10.48550/arXiv.1506.08215
	* [https://www.rochester.edu/newscenter/researchers-use-laser-to-levitate-glowing-nanodiamonds-in-vacuum/ 2015 – press release – Researchers use laser to levitate glowing nanodiamonds in vacuum] <br> [https://www.youtube.com/watch?v=FPHJyaUDiVI 2013 – video – Optically Levitated, Glowing Diamonds for Nanoscale Research] <br>Nick Vamivakas' lab at the University of Rochester.		* [https://www.rochester.edu/newscenter/researchers-use-laser-to-levitate-glowing-nanodiamonds-in-vacuum/ 2015 – press release – Researchers use laser to levitate glowing nanodiamonds in vacuum] <br> [https://www.youtube.com/watch?v=FPHJyaUDiVI 2013 – video – Optically Levitated, Glowing Diamonds for Nanoscale Research] <br>Nick Vamivakas' lab at the University of Rochester.
	'''Issues with heat-up''' (though larger nano-diamonds ~5000x5000x5000 atoms with ~~unknon~~ amounts of unknown defects)		'''Issues with heat-up''' (though larger nano-diamonds ~5000x5000x5000 atoms with unknown amounts of unknown defects)
	* [https://iopscience.iop.org/article/10.1088/1367-2630/aab700 2018 – Pure nanodiamonds for levitated optomechanics in vacuum] <br>Citation A C Frangeskou et al 2018 New J. Phys. 20 043016 <br>DOI 10.1088/1367-2630/aab700		* [https://iopscience.iop.org/article/10.1088/1367-2630/aab700 2018 – Pure nanodiamonds for levitated optomechanics in vacuum] <br>Citation A C Frangeskou et al 2018 New J. Phys. 20 043016 <br>DOI 10.1088/1367-2630/aab700
	* [https://www.nature.com/articles/srep21633 2016 Burning and graphitization of optically levitated nanodiamonds in vacuum] <br>Rahman, A., Frangeskou, A., Kim, M. et al. Burning and graphitization of optically levitated nanodiamonds in vacuum. Sci Rep 6, 21633 (2016). https://doi.org/10.1038/srep21633		* [https://www.nature.com/articles/srep21633 2016 Burning and graphitization of optically levitated nanodiamonds in vacuum] <br>Rahman, A., Frangeskou, A., Kim, M. et al. Burning and graphitization of optically levitated nanodiamonds in vacuum. Sci Rep 6, 21633 (2016). https://doi.org/10.1038/srep21633

Apm: /* External links */ more papers on laser levitation & heat-up issues

2025-05-09T14:23:24Z

External links: more papers on laser levitation & heat-up issues

← Older revision		Revision as of 16:23, 9 May 2025
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	== Papers ==		== Papers ==

			'''Laser pincer levitation:'''
	* [https://arxiv.org/abs/1506.08215 2015 – Loading an Optical Trap with Diamond Nanocrystals Containing Nitrogen-Vacancy Centers from a Surface] <br>arXiv:1506.08215 [cond-mat.mes-hall] <br>https://doi.org/10.48550/arXiv.1506.08215		* [https://arxiv.org/abs/1506.08215 2015 – Loading an Optical Trap with Diamond Nanocrystals Containing Nitrogen-Vacancy Centers from a Surface] <br>arXiv:1506.08215 [cond-mat.mes-hall] <br>https://doi.org/10.48550/arXiv.1506.08215
			* [https://www.rochester.edu/newscenter/researchers-use-laser-to-levitate-glowing-nanodiamonds-in-vacuum/ 2015 – press release – Researchers use laser to levitate glowing nanodiamonds in vacuum] <br> [https://www.youtube.com/watch?v=FPHJyaUDiVI 2013 – video – Optically Levitated, Glowing Diamonds for Nanoscale Research] <br>Nick Vamivakas' lab at the University of Rochester.
			'''Issues with heat-up''' (though larger nano-diamonds ~5000x5000x5000 atoms with unknon amounts of unknown defects)
			* [https://iopscience.iop.org/article/10.1088/1367-2630/aab700 2018 – Pure nanodiamonds for levitated optomechanics in vacuum] <br>Citation A C Frangeskou et al 2018 New J. Phys. 20 043016 <br>DOI 10.1088/1367-2630/aab700
			* [https://www.nature.com/articles/srep21633 2016 Burning and graphitization of optically levitated nanodiamonds in vacuum] <br>Rahman, A., Frangeskou, A., Kim, M. et al. Burning and graphitization of optically levitated nanodiamonds in vacuum. Sci Rep 6, 21633 (2016). https://doi.org/10.1038/srep21633
			'''Workaround?:'''
			* [https://onlinelibrary.wiley.com/doi/10.1002/lpor.201600284 2017 – Optical levitation of nanodiamonds by doughnut beams in vacuum]
			'''Not using lasers:'''
	* [https://www.nature.com/articles/srep30125 2016 – Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum] <br> Hsu, JF., Ji, P., Lewandowski, C. et al. Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum. Sci Rep 6, 30125 (2016). https://doi.org/10.1038/srep30125		* [https://www.nature.com/articles/srep30125 2016 – Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum] <br> Hsu, JF., Ji, P., Lewandowski, C. et al. Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum. Sci Rep 6, 30125 (2016). https://doi.org/10.1038/srep30125

Apm: /* Papers */ added a link to a paper on optical trap levitation

2025-05-09T13:45:09Z

Papers: added a link to a paper on optical trap levitation

← Older revision		Revision as of 15:45, 9 May 2025
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	== Papers ==		== Papers ==

			* [https://arxiv.org/abs/1506.08215 2015 – Loading an Optical Trap with Diamond Nanocrystals Containing Nitrogen-Vacancy Centers from a Surface] <br>arXiv:1506.08215 [cond-mat.mes-hall] <br>https://doi.org/10.48550/arXiv.1506.08215

	* [https://www.nature.com/articles/srep30125 2016 – Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum] <br> Hsu, JF., Ji, P., Lewandowski, C. et al. Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum. Sci Rep 6, 30125 (2016). https://doi.org/10.1038/srep30125		* [https://www.nature.com/articles/srep30125 2016 – Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum] <br> Hsu, JF., Ji, P., Lewandowski, C. et al. Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum. Sci Rep 6, 30125 (2016). https://doi.org/10.1038/srep30125

Apm: added section = Optical pincers / optical traps =

2025-05-09T13:40:11Z

added section = Optical pincers / optical traps =

← Older revision		Revision as of 15:40, 9 May 2025
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	'''Applications:''' The eventual usefulness of this isn't quite obvious. <br>		'''Applications:''' The eventual usefulness of this isn't quite obvious. <br>

			= Optical pincers / optical traps =

			The idea here is to use crossed laser beams to levitate nano-parts. <br>
			An issue with parts bigger than single atoms is absorption and heat-up. <br>
			There may be alternatives for free space levitation relying only on magnetism and gravity ( see papers section). <br>

	= Misc =		= Misc =

Apm: /* External links */ added link to paper where gravity and magnetism is used for levitation

2025-05-09T13:32:50Z

External links: added link to paper where gravity and magnetism is used for levitation

← Older revision		Revision as of 15:32, 9 May 2025
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	----		----
	* Wikipedia: [https://en.wikipedia.org/wiki/Earnshaw%27s_theorem Earnshaw's theorem] (proof of fundamental impossibility of purely magnetostatic levitation)		* Wikipedia: [https://en.wikipedia.org/wiki/Earnshaw%27s_theorem Earnshaw's theorem] (proof of fundamental impossibility of purely magnetostatic levitation)

			== Papers ==

			* [https://www.nature.com/articles/srep30125 2016 – Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum] <br> Hsu, JF., Ji, P., Lewandowski, C. et al. Cooling the Motion of Diamond Nanocrystals in a Magneto-Gravitational Trap in High Vacuum. Sci Rep 6, 30125 (2016). https://doi.org/10.1038/srep30125

Apm: /* Related */

2025-02-18T16:20:37Z

← Older revision		Revision as of 18:20, 18 February 2025
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	= Related =		= Related =

			* '''[[Intercrystolecular levitation]]'''
	* [[Superlubrication]]		* [[Superlubrication]]
	* [[Infinitesimal bearing]]		* [[Infinitesimal bearing]]

Apm: /* Magnetic levitation */ added linebreak

2022-03-12T16:51:18Z

Magnetic levitation: added linebreak

← Older revision		Revision as of 18:51, 12 March 2022
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	== Magnetic levitation ==		== Magnetic levitation ==

	Magnetism does not scale well with shrinking size it becomes very weak at the nanoscale thus it's		Magnetism does not scale well with shrinking size it becomes very weak at the nanoscale thus it's <br>
	mainly useful in levitating macroscopic parts.		mainly useful in levitating macroscopic parts. <br>
	The manipulation of magnetic properties of diamondoid materials falls unther the [[non mechanical technology path]]		The manipulation of magnetic properties of diamondoid materials falls unther the [[non mechanical technology path]]

Apm: /* Active electrostatic levitation - dynamic control */ a lot of elaboration

2022-03-12T16:50:36Z

Active electrostatic levitation - dynamic control: a lot of elaboration

@@ Line 17: / Line 17: @@
 Main article: [[Negative pressure bearings]]
-== Active electrostatic levitation - dynamic control ==
+== Active electrostatic levitation - (dynamic control) ==
-Charge on the bearing sleeve is dynamically adjusted such that the rotor remains in a nominal position.
+In order to levitate a bearing make its parts repulse each other by:
-The free floating rotor rotor needs to be charged
+* Giving the shaft the opposite charge of the sleeve
-* either by featuring electrostatic dipoles
+* Giving the axle the opposite charge of the wheel
-* or by shooting over electrons maybe
+<small>The latter is same exact idea just swapped out what rotates and what not.</small>
-* or ...
+=== No static levitation like such possible? ===
-Some form of [[sensors|electrostatic sensor]] is needed. <br>
-A lot should be known from existing work with MEMS here.
+Static levitation this is likely impossible to be stable analogously <br>
 == Casimir force ==