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5 yr. ago

Black belt in Mikado, Photo model, for the photos where they put under 'BEFORE'

  • I'm from Spain

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  • 1967 - They say, the design was accidental, for sure, I think, maybe a Freudian lapsus

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  • Coronado Navy Base - San Diego

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  • Al this to work later in the job with an Excel accountant table.

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  • In the nature it's strict forbidden to touch pinguins, becaise it destroys the plumage impregnation and insulation, which has deadly consequences for the pinguin in the Water and with an harsh climate. Because of this you never will see scientifics doing it. Different in Zoos.

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  • Asking Andisearch

    Dramatic and Elusive Resonant Lattice Kerker Effect in the Nonlinear Response of Plasmonic Lattices

    Key Points

    • A plasmonic metasurface demonstrates the resonant lattice Kerker effect, suppressing reflection in a narrow spectral band through simultaneous electric dipole and lattice mode excitation.
    • The effect is observed in the nonlinear optical response of periodic plasmonic structures, making it both rare and difficult to achieve experimentally.


    This research describes a plasmonic metasurface that supports the resonant lattice Kerker effect, which manifests as suppressed reflection within a narrow spectral range. The suppression occurs because electric dipole and magnetic-type lattice resonances are excited simultaneously, causing their radiated fields to interfere destructively in the backward direction, per Wiley Online Library.

    Image: Wiley Online Library - Dramatic and Elusive Resonant Lattice Kerker Effect in the Nonlinear Response of Plasmonic Lattices

    Background and Context

    The Kerker effect, in its classical form, describes conditions under which a particle's forward and backward scattering become asymmetric due to the interplay of electric and magnetic multipoles. The "first Kerker condition" produces zero backscattering when electric and magnetic dipole moments are equal in magnitude and phase. Achieving this in practice, particularly in plasmonic systems and at nonlinear frequencies, has proven difficult.

    Image: ACS Publications - Full Color Generation Using Silver Tandem Nanodisks

    Periodic plasmonic arrays (lattices) add another layer of physics. Wood's anomalies and lattice resonances can hybridize with the localized modes of individual nanostructures, producing sharp spectral features. According to ACS Nano, metal-insulator-metal sandwich nanodisks in periodic arrays create narrow, high-resonance peaks through radiation mode hybridization with Wood's anomaly, generating vivid colors in both reflection and transmission.

    Image: opg.optica.org - Mie-resonant metaphotonics

    The broader field of Mie-resonant metaphotonics, as reviewed in Advances in Optics and Photonics, examines how electric and magnetic multipoles govern light interaction in engineered structures, including the first and second Kerker conditions.

    Nonlinear Dimension

    What makes this particular result "dramatic and elusive" is that the Kerker-type interference is observed in the nonlinear response of the lattice. Nonlinear metasurfaces have been studied for second-harmonic generation and beam shaping. Work published in ACS Photonics demonstrated nonlinear beam shaping with plasmonic split-ring resonators, controlling second-harmonic wavefronts through local phase and amplitude manipulation. A more recent study in Nano Letters showed hybrid nonlinear metasurface lenses that generate and focus second-harmonic light.

    Image: acs.org - Hybrid Nonlinear Metasurface Refractive Lens

    Extending the lattice Kerker condition into the nonlinear regime is harder because the nonlinear polarization sources are weaker, spectrally shifted, and subject to different symmetry constraints than their linear counterparts. The paper published in Wiley's Nanophotonics journal reports success in observing this effect experimentally.

    Further Reading

    The primary paper is available at Wiley Online Library and provides the full experimental and theoretical treatment. For broader context on Mie resonances and Kerker conditions in metaphotonics, the review in Advances in Optics and Photonics offers a comprehensive multipolar analysis.

    Sources: Wiley Online Library, ACS Nano, Optica, ACS Photonics, Nano Letters

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  • Both have emotions, but not the same, simply because testosteron isn't the same as estrogen in it's effects. Women are biological and hormonal different from men, but as said, nothing to do with scientific, analytic, mathematic, physical and tecnical or intelectual capabilities. The only limitations are traditional rols and educations in the society (movie about Lisa Meitner instead one of Oppenheimer?)

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  • I like to play chess with people which are way better than I am in it

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  • Woman certainly have a different brain organization (emotionalº) due their biological rol, but this has nothing to do with the intellectual capabiliities. All the mentioned prejudices that are confirmed are caused by traditional education where girls are always put in their shema with toys that reinforce this expected role of them, the same with boys (dolls vs toy cars).

    https://www.youtube.com/watch?v=0o7nJknQkOU

    º "Women which gain weight live healthier than the man who mencioned it"

  • Dammit

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  • Remember me to

    A lot of math needed, more as for the pattern, to make clothes to fit on an irregular body

    First computers are based on the input of sewing machines

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  • The law means nothing when lobbies of big corps can change it to their like, paying politicans as their spokespersons.

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  • For a photon itself, time don't exist, for a photon it is everywhere in the universe at the same time. Only for an observer it need x time from A to B with a finite speed.

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  • A large planet in the habitable zone of a red dwarf can be docked and always show the same face to the sun. Due to the frequent solar flares of a red dwarf, this part of the planet is devastated, but not necessarily the dark side. Apart from this, a red dwarf is quite violent in its first part of life, but not so much after a certain age, which in this type of suns is billon years more than in suns like ours or larger. Basic life can exist almost everywhere as shown. This is why it can never be ruled out that life exists on this planet, if there are indications of life even on Venus in high layers of its atmosphere.

    Another thing is if we talk about advanced or even technological life, this already requires much more limited margins of conditions. For example, advanced technology requires fire domination as a basis, therefore it excludes oxygen-free environments and aquatic worlds, but even there can exist intelligent life (even on Earth sometimes).

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  • Science Memes @mander.xyz

    Can I still use this salt?

  • Science Memes @mander.xyz

    Schrödingers cat