Zerush
@Zerush@lemmy.ml
Black belt in Mikado Photo model, for the photos where they put under 'BEFORE'
- Comment on Happy birds 5 hours ago:
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.
- Comment on Bee fly 16 hours ago:
- Comment on Wiley Coyote 16 hours ago:
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.
Dramatic and Elusive Resonant Lattice Kerker Effect in the Nonlinear Response of Plasmonic Lattices 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.
Full Color Generation Using Silver Tandem Nanodisks 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.
Mie-resonant metaphotonics 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.
Hybrid Nonlinear Metasurface Refractive Lens 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
- Comment on WOMEN. 6 days ago:
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?)
- Comment on WOMEN. 6 days ago:
I like to play chess with people which are way better than I am in it
- Comment on WOMEN. 6 days ago:
- Comment on Dammit 1 week ago:
- Comment on The Projected Truth 1 week ago:
- Comment on Ada Lovelace 1 week ago:
Remember me to
- Comment on Guerrilla plantfare 2 weeks ago:
The law means nothing when lobbies of big corps can change it to their like, paying politicans as their spokespersons.
- Comment on Comic sans gang 2 weeks ago:
Better in “Hello Doctor”, seems smarter
- Comment on The speed of light 2 weeks ago:
For a photon itself, time don’t exist, for a photon it is everywhere in the universe at the same time. Inly for an observer it need x time from A to B with a finite speed.
- Comment on no chances for life around red dwarfs 2 weeks ago:
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.
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.
- Comment on Masturbation among birds is ‘natural’ and should not be punished, say experts 2 weeks ago:
Sexual preferences are private as long it don’t hurt others
- Comment on Music just isn't good anymore 2 weeks ago:
Good and bad music exist since the existence of music. The problem with bad music began from the music industry massified it with criteria more commercial than artistic, this is why good music did not cease to exist, but you have to look for it more than before. Whether you like it or not depends only on personal taste, not on type or style.
- Comment on Well said 2 weeks ago:
I eat 7 and often more, I like the risk and adventure
- Comment on Proof that math is real 2 weeks ago:
In the nature you.ll find way more math complexity without AI
- Comment on Smell the Roses 3 weeks ago:
- Comment on Caption this. 4 weeks ago:
It’s the dead of an Woodpecker attacked by an Weasel, A Weasel is a predator and even when the Woodpecker try to escape, the weasel don’t let him go and at the end he will kill the bird in the first occasion. It’s like a Lion riding a Cebra.
- Comment on Uh well actually- 4 weeks ago:
- Comment on References: [1] out of his ass 5 weeks ago:
That is the point, you can’t even check it. You can’t check if Dark Matter is caused by an paralel dimension or not. Ous science is still very basic, we know the phenomens, we even can calculate and use it (eg.gravity lenses), but we don’t know what it is, we don’t even really know what is light.
- Comment on References: [1] out of his ass 5 weeks ago:
As long as we do not know what Dark Matter or Dark Energy is, any hypothesis is valid. Scientific method is to err above towards the truth.
- Comment on bring 👏 him 👏 back 5 weeks ago:
- Comment on Spicy Air ☢️ 1 month ago:
It’s undestandable to use existing Reaktors some years more, because closing them, as explained, is an even bigger mess with inacceptable costs. The consquences of an Hype promoted by Lobbies, without any thoughts and planning about, like selling expensive cars without brakes.
- Comment on Spicy Air ☢️ 1 month ago:
Nonsense, fision energy is expensive and dangerous.
Only in Germany there are over 12.000 tons of radioactive waste and nobody knows where to stored it secure for the next 100.000 years. It’s depending on third countries to import the needed Uranium Indestructibles containers in a geological stable vault is a bad joke, it don’t exist, at least not enough for all the waste, not even for the already existing. A nuclear reactor has a life span of ~50 years max, after this it need to be eliminated, a process of over 10 years for descontamination and elimination of more radioactive waste with a cost of billions of $, paid by the country, as said, by you, not by the company. Means 50 years energy and >50.000 years problems. Nuclear is the best, but only if we have an working fusion reactor, means, maybe in 10-20 years. Meanwhile the fision energy is sponsored by certain lobbies and the weapon industry, they are the real reason.
In Spain the energy costs for the user are ~14 cts/kWh at some hours even free (the lowest costs in the EU), thanks to the intensive use of renevable energy, blocked often by fossil and nuclear lobbies in other countries.
- Comment on New gf 1 month ago:
It’s a Panda
- Comment on Electricity explained 1 month ago:
- Comment on Reptilian Boomertron 9000 1 month ago:
As a boomer I want one like this
- Comment on Forensic Poetry 1 month ago:
- Comment on Forensic Poetry 1 month ago:
Drugs were always very common through all the history, Cannabis was used until the 20th century as “tobaco for the poor”, apart of Cannabis also funghi and other psycho active plants known in Europe in the middle age and before, eg by artists as inspiration.
