Is it Possible to Detect a Rotating Spherical Colloidal Particle?
A single micrometer‐size spherical colloid has been set in rotation by transfer of light orbital angular momentum. This particle is floating at an air–water interface. Steady‐state rotational frequencies of the order of one hertz have been observed, depending on the topological charge of the beam an...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-02-01
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| Series: | Advanced Photonics Research |
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| Online Access: | https://doi.org/10.1002/adpr.202400098 |
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| _version_ | 1832086967569874944 |
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| author | Olivier Emile Janine Emile |
| author_facet | Olivier Emile Janine Emile |
| author_sort | Olivier Emile |
| collection | DOAJ |
| description | A single micrometer‐size spherical colloid has been set in rotation by transfer of light orbital angular momentum. This particle is floating at an air–water interface. Steady‐state rotational frequencies of the order of one hertz have been observed, depending on the topological charge of the beam and on its power, in agreement with expected values. The detection is performed using the rotational Doppler shift of the diffused light. Two time constants have been evidenced in the rotational velocity dynamics. The first one is related to the friction of the colloid with the fluid (air and water), whereas the other one is principally associated with the wall friction of the air–liquid interface with the container. This measurement technique makes it possible to identify dynamic parameters of the rotational movement of any spherical object, which is usually impossible to detect. |
| format | Article |
| id | doaj-art-a0ab7ad51b774591af13ef0ce1552da5 |
| institution | Kabale University |
| issn | 2699-9293 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj-art-a0ab7ad51b774591af13ef0ce1552da52025-02-06T08:56:40ZengWiley-VCHAdvanced Photonics Research2699-92932025-02-0162n/an/a10.1002/adpr.202400098Is it Possible to Detect a Rotating Spherical Colloidal Particle?Olivier Emile0Janine Emile1Université de Rennes F‐35000 Rennes FranceUniversité de Rennes CNRS IPR ‐ UMR 6251 F‐35000 Rennes FranceA single micrometer‐size spherical colloid has been set in rotation by transfer of light orbital angular momentum. This particle is floating at an air–water interface. Steady‐state rotational frequencies of the order of one hertz have been observed, depending on the topological charge of the beam and on its power, in agreement with expected values. The detection is performed using the rotational Doppler shift of the diffused light. Two time constants have been evidenced in the rotational velocity dynamics. The first one is related to the friction of the colloid with the fluid (air and water), whereas the other one is principally associated with the wall friction of the air–liquid interface with the container. This measurement technique makes it possible to identify dynamic parameters of the rotational movement of any spherical object, which is usually impossible to detect.https://doi.org/10.1002/adpr.202400098orbital angular momentum of lightrotation detectionrotational Doppler effectspherical colloids rotation |
| spellingShingle | Olivier Emile Janine Emile Is it Possible to Detect a Rotating Spherical Colloidal Particle? Advanced Photonics Research orbital angular momentum of light rotation detection rotational Doppler effect spherical colloids rotation |
| title | Is it Possible to Detect a Rotating Spherical Colloidal Particle? |
| title_full | Is it Possible to Detect a Rotating Spherical Colloidal Particle? |
| title_fullStr | Is it Possible to Detect a Rotating Spherical Colloidal Particle? |
| title_full_unstemmed | Is it Possible to Detect a Rotating Spherical Colloidal Particle? |
| title_short | Is it Possible to Detect a Rotating Spherical Colloidal Particle? |
| title_sort | is it possible to detect a rotating spherical colloidal particle |
| topic | orbital angular momentum of light rotation detection rotational Doppler effect spherical colloids rotation |
| url | https://doi.org/10.1002/adpr.202400098 |
| work_keys_str_mv | AT olivieremile isitpossibletodetectarotatingsphericalcolloidalparticle AT janineemile isitpossibletodetectarotatingsphericalcolloidalparticle |