Results 1 to 10 of about 374,995 (289)

A two‐photon fluorescence micro‐spectroscopy method for chemotaxonomic characterization of fossil resins [PDF]

open access: yesApplications in Plant Sciences
Premise Amber, a fossilized chemical defensive exudate, is important for understanding ancient plant–insect/pathogen interactions, yet its botanical origins, especially for Cretaceous amber, remain enigmatic.
Victoria E. McCoy   +6 more
doaj   +2 more sources

Exploration of responsive photonic arrays fabricated by two photon lithography [PDF]

open access: yesEPJ Web of Conferences, 2023
Responsive hydrogel photonic structures were fabricated using two-photon lithography. The design versatility of two-photon lithography provides for unprecedented manipulation of transmittance and reflectance spectra, producing distinct structural color ...
Qian Jing   +5 more
doaj   +1 more source

Robust all-dielectric high Q-factor metasurface for sensing [PDF]

open access: yesEPJ Web of Conferences, 2023
All-dielectric metasurfaces have seen a recent surge of interest as an alternative to plasmonic devices, due to low losses and desirable optical properties.
McCormack Oisin   +3 more
doaj   +1 more source

Amber [PDF]

open access: yesCurrent Biology, 2019
David Grimaldi introduces amber and the fossils contained therein.
openaire   +3 more sources

Single pulse all-optical toggle switching of magnetization without gadolinium in the ferrimagnet Mn2RuxGa

open access: yesNature Communications, 2020
Femtosecond laser pulses allow for extremely fast switching of magnetization in ferromagnetic films, but all examples so far contained gadolinium. Here the authors demonstrate room temperature all-optical toggle switching in a ferrimagnetic manganese ...
C. Banerjee   +8 more
doaj   +1 more source

TEM and EELS characterization of Ni–Fe layered double hydroxide decompositions caused by electron beam irradiation

open access: yesnpj 2D Materials and Applications, 2021
Electron irradiation of Ni–Fe layered double hydroxides (LDHs) was investigated in the transmission electron microscope (TEM). The initial structure possessed a flat hexagonal morphology made up of crystalline domains with a well-defined hexagonal ...
Christopher Hobbs   +3 more
doaj   +1 more source

Two Different Cretaceous Worlds: Taimyr and Kachin Amber Trichopterofaunas

open access: yesZoodiversity, 2022
Polycentropodidae constitute 55.6% of Taimyr amber caddisfly species with known males, and only 4.8% of caddisfly species with known males in Kachin amber.
E. Perkovsky
doaj   +1 more source

A new species of Bocchus from upper Eocene Rovno amber (Hymenoptera, Dryinidae) [PDF]

open access: yesJournal of Hymenoptera Research, 2022
A new fossil species of Dryinidae (Hymenoptera, Chrysidoidea) from upper Eocene Rovno amber (Ukraine) is described: Bocchus rex sp. nov. It is compared with two other species of Bocchus known from European amber: B.
Massimo Olmi   +6 more
doaj   +3 more sources

A Robust pH Sensing Module Utilizing Reproducible Structural Colour Fabricated by Two-Photon Polymerisation [PDF]

open access: yesEPJ Web of Conferences
Photonic structures integrated with responsive photoresists have garnered significant attention, particularly following the advancements in two photon lithography.
Qian Jing   +4 more
doaj   +1 more source

The first fossil cyphophthalmid harvestman from Baltic amber [PDF]

open access: yes, 2011
The first fossil cyphophthalmid harvestman (Opiliones: Cyphophthalmi) from Palaeogene (Eocene) Baltic amber is described. This is only the third fossil example of this basal harvestman lineage; the others being from the probably slightly younger ...
Dunlop, Jason A., Mitov, Plamen G.
core   +2 more sources

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