📰Microalgae can detect light source from a single photon

Plankton move according to light, thanks to their amazing detection ability. Researchers from the Laboratory for Complex Materials and Systems have already shown that a single photon can be enough to attract microalgae from Chlamydomonas Reinhardti. This work can help facilitate the culture (Culture is a pan-galactic civilization invented by Ian M Banks through…) Algae are highlighting the composition of the green tide.


Colorful example of the self-regulation of algae facing a light (Light is the set of electromagnetic waves visible to the eye…) Heterogeneous.
© Ramamonji et al.

In the Globalism (world can refer to 🙂 The Plankton (Homer called the animals that wander on the surface of the waves plankton, from the Greek…) microalgae, Chlamydomonas Reinhardti Well known to researchers. It is already used as a model for Photosynthesis (Photosynthesis (Greek φῶς phōs, light and …) Single-celled organisms for nearly fifty years, and also in the work physical (Physics (from Greek φυσις, nature) is etymologically…) as a swimmer model. These algae can also be mutated to produce biohydrogen or molecules of pharmaceutical importance, which are made forMoment (Moment defines the smallest component of time. Moment is not…) In the lab while waiting to move to an industrial scale. One of the obstacles generally encountered in the culture (UNESCO’s definition of culture is as follows [1] 🙂 Microalgae, comes from the need to constantly stirWater (Water is a chemical compound found everywhere on Earth, essential to everyone…) in which they are suspension (The verb to suspend particles in chemistry, suspension refers to dispersion…). The photoaxis, i.e. the ability of the algae to move toward the light source, can be used to create such motions at a lower energy cost.

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This phenomenon is studied by researchers from the laboratory issue (Material is the substance that makes any object have a tangible reality. …) and complex systemsMaster’s (In France, a Master of Science is a higher education diploma accredited by …)CNRS / University Paris (Paris is a French city and the capital of France and the capital of the region…) martyred) have shown that Chlamydomonas Reinhardti So sensitive to light that it only detects sources that emit one Photon (In particle physics, the photon (often denoted by the letter γ – gamma) …), then move towards them if they receive at least one every ten seconds. Algae populations can also self-organize against a area (The field corresponds to the idea of ​​the given space 🙂 Uneven light, creating amazing patterns. These results are published in the journal Physical review letters.

The scientists placed these algae in petri dishes immersed in darkness. As with photo mode, light red (Red responds to different definitions, depending on the color scheme we do…) he is everything (All is understood as all that exists most often as the world or …) It is also there for you to observe the manipulation: the algae are unable to detect it the color (Color is the subjective perception by the eye of one or more wave frequencies…)without prejudice to the measurements. Chlamydomonas Reinhardti sensitive to green light. a laser (A laser is a device that emits light (electromagnetic radiation)…) From this shadow, after going through network (A computer network is a group of equipment linked together to exchange information…) Of filters and lenses, only a small package remains.

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This is how researchers were able to conduct their experiments and monitor their reactions Chlamydomonas Reinhardti. The team continues this work, in particular to measure the impact Speed (distinguish 🙂 It flows over the cell divisions of microalgae, or even to test their reaction to light rays of different shapes. These studies can also help to better understand the formation of green tides, which is due to the problem of algae migration under the influence of light more than their reproduction alone.

References:
Nonlinear optical axis and instability in light-seeking algal suspensions
Aina Ramonji, Julian Dervaux and Philip Brunet.
physical review messages2022.
https://doi.org/10.1103/PhysRevLett.128.258101

Contacts:
– Julian Dervaux – Responsible for Research (Scientific research identifies in the first place all actions taken with a view to …) to me CNRS (The National Center for Scientific Research, better known by the acronym CNRS, is the largest…)Systems, Materials and Complex Laboratory (CNRS, University (The university is an institution of higher education whose goal is…) Paris Cité) – julien.dervaux at univ-paris-diderot.fr
Telecommunications (Contact with man (communication within oneself, communication between people, etc.) INSIS – Contact cnrs.fr

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