Results 71 to 80 of about 270,107 (308)

Exposure to UV radiance predicts repeated evolution of concealed black skin in birds

open access: yesNature Communications, 2020
In contrast to bird plumage, little is known about the evolution of bird skin color. Here, Nicolaï et al. find that black skin has evolved over 100 times in birds and is associated with baldness and/or white feathers as well as with high irradiation ...
Michaël P. J. Nicolaï   +4 more
doaj   +1 more source

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

open access: yesAdvanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen   +3 more
wiley   +1 more source

Growth and Characterisation of ZnO Nanostructures: Excitonic Properties and Morphology [PDF]

open access: yes, 2010
The growth mechanism of aligned ZnO nanostructures, grown by the vapour phase transport (VPT) growth method, specifically with nanorod and nanowall morphologies has been studied.
Biswas, Mahua
core   +2 more sources

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

Synthesis of multicomponent nanocomposites containing filamentary carbon nanostructures

open access: yes, 2020
In this work, the multicomponent nanocomposites containing filamentary carbon nanostructures were synthesized using materials based on iron oxides with a predominant content of the epsilon phase (epsilon-Fe2O3).
Sazonov, Roman,   +5 more
core   +1 more source

Laser-surface nanostructures in carbon coating

open access: yes, 2005
In this paper we propose a theoretical basis of a new method of Laser Ablation Lithography (LAL) using coherent laser beams interference patterns. The advantage of our method is the absence of the need to use a mask.
Bila, RV,   +3 more
core   +2 more sources

Robust Electrocaloric Performance Enabled by Highly‐Polar Frustrated Nanodomains in NaNbO3‐Based Ferrodistortive Relaxor

open access: yesAdvanced Functional Materials, EarlyView.
P4bm framework in NaNbO3‐Ba(Ti, Hf)O3 ferrodistortive relaxor entails short‐range and highly‐polar ferrodistortive orders. The abundant highly‐polar orders facilitate to increase entropy change, and robust octahedral oxygen tilt enables to impede thermal perturbations.
Feng Li   +11 more
wiley   +1 more source

Fabrication, characterization and optical properties of three-dimensional colloidal gold nanostructures [PDF]

open access: yes, 2008
3-Dimensional nanostructures were constructed through the alternate immersion of a derivatized glass slide in solutions of propanedithiol and gold nanoparticles.
Addison, Christopher James
core  

Cellulose Structures as a Support or Template for Inorganic Nanostructures and Their Assemblies

open access: yes, 2022
Cellulose is the most abundant natural polymer and deserves the special attention of the scientific community because it represents a sustainable source of carbon and plays an important role as a sustainable energent for replacing crude oil, coal, and ...
Žagar, Ema   +3 more
core   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri   +11 more
wiley   +1 more source

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