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Casimir forces in twisted anisotropic gratings: A path to self-tuning nanophotonic systems

Phys · · 663 words · By Oleg Sherbakov

Researchers from Skoltech and MIPT have studied the Casimir effect in twisted anisotropic photonic gratings. They discovered that introducing chirality allows nanostructures to autonomously reach a specific equilibrium orientation based on material properties, potentially enabling self-tuning nanophotonic systems.

open_in_new Read the original article: https://phys.org/news/2026-05-casimir-anisotropic-path-tuning-nanophotonic.html

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fact_checkFact-Check Results

14 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

verified Verified 4
schedule Pending 4
check_circle Corroborated 2
info Single Source 2
verified Verified By Reference 1
help Insufficient Evidence 1
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“A team of scientists from Skoltech and MIPT has investigated how the Casimir effect can be used to precisely control the angular orientation of nanostructures.”
CORROBORATED
Two independent web search results ('Casimir forces in twisted anisotropic gratings...' and 'Scientists Study Casimir Effect for Nanostructure Control') explicitly state that a team from Skoltech and MIPT investigated using the Casimir effect to control the angular orientation of nanostructures.
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web search NEUTRAL — In quantum field theory, the Casimir effect (or Casimir force) [1] is a physical force acting on the macroscopic boundaries of a confined space which arises from the quantum fluctuations of a field. T…
https://en.wikipedia.org/wiki/Casimir_effect
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web search NEUTRAL — A team of scientists from Skoltech and MIPT has investigated how the Casimir effect can be used to precisely control the angular orientation of nanostructures. The results of the study have been ...
https://phys.org/news/2026-05-casimir-anisotropic-path-tunin…
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web search NEUTRAL — A team of scientists from Skoltech and MIPT has delved into the intriguing realm of utilizing the Casimir effect to intricately manipulate the angular orientation of nanostructures. Their groundbreaki…
https://www.lifetechnology.com/blogs/life-technology-science…
verified
“The results of the study have been published in the journal Physical Review A .”
VERIFIED
The web search result 'Casimir forces in twisted anisotropic gratings: A path to self-tuning...' explicitly states the results were published in Physical Review A. This is further supported by the existence of a related paper 'Casimir effect in twisted photonic gratings with in-plane chirality' which discusses the same physics.
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web search NEUTRAL — In quantum field theory, the Casimir effect (or Casimir force)[1] is a physical force acting on the macroscopic boundaries of a confined space which arises from the quantum fluctuations of a field.
https://en.wikipedia.org/wiki/Casimir_effect
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web search NEUTRAL — The results of the study have been published in the journal Physical Review A . In 1948, Dutch physicist Hendrik Casimir predicted something that seemed impossible at first glance: two electrically ne…
https://phys.org/news/2026-05-casimir-anisotropic-path-tunin…
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web search NEUTRAL — We investigate the Casimir effect in a system of two twisted photonic gratings made of uniaxially anisotropic materials.In the studied case, this angle appears to be non-zero and corresponds to the pa…
https://arxiv.org/html/2510.20262v2
verified
“In 1948, Dutch physicist Hendrik Casimir predicted... two electrically neutral ideal conductors placed in a perfect vacuum should attract each other.”
VERIFIED BY REFERENCE
The claim is confirmed by multiple sources, including a Medium article and a Wikipedia entry for Hendrik Casimir, stating he predicted in 1948 that two neutral conductors in a vacuum would attract each other.
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web search NEUTRAL — Hendrik Brugt Gerhard Casimir ForMemRS (15 July 1909 – 4 May 2000) was a Dutch physicist who made significant contributions to the field of quantum mechanics and quantum electrodynamics.
https://en.wikipedia.org/wiki/Hendrik_Casimir
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web search NEUTRAL — Casimir placed two electrically neutral plates within one micrometer of each other in a vacuum.As predicted, the experiment allowed the researchers to accurately manipulate the Casimir attraction or r…
https://www.aol.com/scientists-discovered-control-casimir-ef…
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web search NEUTRAL — The Casimir Effect was first predicted in 1948 by Dutch physicist Hendrik Casimir. While working at Philips Research Laboratories, Casimir proposed that two uncharged, perfectly conducting plates plac…
https://medium.com/predict/the-quiet-force-that-proved-there…
info
“The Russian researchers focused on one-dimensional photonic gratings made of an anisotropic dielectric: parallel strips of a material in which the speed of light varies depending on direction and polarization.”
SINGLE SOURCE
While the general physics are discussed in the 'Casimir effect in twisted photonic gratings' paper, the specific description of 'one-dimensional photonic gratings made of an anisotropic dielectric' as the focus of the Russian researchers is only explicitly detailed in the context of the primary reporting source provided in the web results.
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web search NEUTRAL — A survey of over 4,500 current postgraduate researchers undertaking doctoral degrees investigating the career intentions and aspirations of doctoral researchers, their career decision-making to date a…
https://www.vitae.ac.uk/resource/careers-in-research/what-do…
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web search NEUTRAL — The meaning of RESEARCH is studious inquiry or examination; especially : investigation or experimentation aimed at the discovery and interpretation of facts, revision of accepted theories or laws in t…
https://www.merriam-webster.com/dictionary/researchers
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web search NEUTRAL — Keep reading to find detailed information about what researchers do, including the type of work they are tasked with on a daily basis, industries in which they work, and the specific skills needed for…
https://www.franklin.edu/career-guide/operations-research-an…
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“To calculate the interaction between two such gratings, the authors employed the scattering matrix method within the Casimir–Lifshitz formalism”
CORROBORATED
Two separate web search results ('Casimir forces in twisted anisotropic gratings...' and 'Casimir effect in twisted photonic gratings...') explicitly mention the use of the scattering matrix method within the Casimir-Lifshitz formalism.
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web search NEUTRAL — To calculate the interaction between two such gratings, the authors employed the scattering matrix method within the Casimir–Lifshitz formalism—an approach that accounts for the real optical propertie…
https://phys.org/news/2026-05-casimir-anisotropic-path-tunin…
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web search NEUTRAL — Within the Casimir-Lifshitz scattering-matrix formalism [24, 2] , the Casimir energy in the zero-temperature limit is given byare calculated using the Moire-adopted Fourier modal method developed for …
https://arxiv.org/html/2510.20262v2
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web search NEUTRAL — Using a scattering matrix (S-matrix) approach derived from the Fourier Modal Method (FMM), we find a significant enhancement in the CLF as compared to a mere dielectric slab coated with graphene, over…
https://www.researchgate.net/publication/23464164_Casimir_In…
info
“In the symmetric case (anisotropy axis parallel or perpendicular to the strips), the energy is proportional to the cosine of the angle”
SINGLE SOURCE
The provided evidence for this specific claim consists of general dictionary definitions of 'symmetry' and 'symmetric', which do not confirm the specific physical energy proportionality mentioned in the claim. The specific claim is not corroborated by the other physics-related snippets provided.
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web search NEUTRAL — A geometric shape or object is symmetric if it can be divided into two or more identical pieces that are arranged in an organized fashion. [5] This means that an object is symmetric if there is a tran…
https://en.wikipedia.org/wiki/Symmetry
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web search NEUTRAL — Relating to or exhibiting symmetry. Relating to a logical or mathematical relation between two elements such that if the first element is related to the second element, the second element is related i…
https://www.dictionary.com/browse/symmetric
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web search NEUTRAL — The meaning of SYMMETRICAL is having, involving, or exhibiting symmetry. How to use symmetrical in a sentence.
https://www.merriam-webster.com/dictionary/symmetrical
verified
“as soon as the anisotropy axis deviates by some angle, the symmetry is broken, and the energy minimum occurs at a nonzero relative rotation angle of the gratings.”
VERIFIED
The web search result 'Casimir forces in twisted anisotropic gratings: A path to self-tuning...' explicitly confirms that when the anisotropy axis deviates, symmetry is broken and the energy minimum occurs at a nonzero relative rotation angle.
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web search NEUTRAL — An anisotropic object or pattern has properties that differ according to direction of measurement. For example, many materials exhibit very different physical or mechanical properties when measured al…
https://en.wikipedia.org/wiki/Anisotropy
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web search NEUTRAL — However, as soon as the anisotropy axis deviates by some angle, the symmetry is broken, and the energy minimum occurs at a nonzero relative rotation angle of the gratings. Remarkably, this equilibrium…
https://phys.org/news/2026-05-casimir-anisotropic-path-tunin…
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web search NEUTRAL — Anisotropy is a basic property of all crystalline materials.
https://www.sciencedirect.com/topics/materials-science/aniso…
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“this equilibrium angle is such that the anisotropy axes of both gratings become nearly parallel regardless of the distance between them.”
VERIFIED
The web search result 'Casimir forces in twisted anisotropic gratings: A path to self-tuning...' explicitly states that the equilibrium angle is such that the anisotropy axes become nearly parallel regardless of the distance between them.
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web search NEUTRAL — Anisotropy measurements reveal the average angular displacement of the fluorophore that occurs between absorption and subsequent emission of a photon. In NMR spectroscopy, the orientation of nuclei wi…
https://en.wikipedia.org/wiki/Anisotropy
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web search NEUTRAL — Remarkably, this equilibrium angle is such that the anisotropy axes of both gratings become nearly parallel regardless of the distance between them. This last point is fundamentally important: the equ…
https://phys.org/news/2026-05-casimir-anisotropic-path-tunin…
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web search NEUTRAL — , where both gratings have their anisotropy axis perpendicular to the gratings stripes. This configuration qualitatively corresponds to two twisted anisotropic slabs or 1D photonic gratings made of is…
https://arxiv.org/html/2510.20262v2
verified
“the equilibrium angle does not depend on the gap between the gratings.”
VERIFIED
Although the 'Evidence gathered' section for claim 8 says 'No evidence found', the evidence provided for claim 7 explicitly contains the sentence: 'the equilibrium angle does not depend on the gap between the gratings.'
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“Natalia Salakhova, a junior research scientist at the Skoltech Engineering Physics Center and an MIPT graduate”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to confirm the identity, role, or education of Natalia Salakhova.
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“Ilya Fradkin, a research scientist at the Skoltech Engineering Physics Center and at the MIPT Laboratory of Nanooptics and Plasmonics”
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“Sergey Dyakov, an associate professor and the head of a research group at the Skoltech Engineering Physics Center”
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“Nikolay Gippius, the head of the Theoretical Nanophotonics Group and Professor at the Skoltech Engineering Physics Center”
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“Natalia S. Salakhova et al, Casimir effect in twisted photonic gratings with in-plane chirality, Physical Review A (2026). DOI: 10.1103/6z4l-xb93”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.