A Novel Twofold Symmetry Architected Metamaterials with High Compressibility and Negative Poisson's Ratio
Sign Up to like & getrecommendations! Published in 2021 at "Advanced Engineering Materials"
DOI: 10.1002/adem.202001041
Abstract: This study presents the compression response of additively manufactured novel soft porous structures with architected microstructure. Six porous additively manufactured architected periodic structures with two‐fold and four‐fold symmetry were considered. The effect of pore shape… read more here.
Keywords: symmetry; negative poisson; fold symmetry; poisson ratio ... See more keywords
Engineering Symmetry‐Breaking Nanocrescent Arrays for Nanolasing
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Functional Materials"
DOI: 10.1002/adfm.201904157
Abstract: This paper describes a symmetry‐breaking plasmonic lattice structure that can support narrow resonances as optical feedback for nanolasing. A scalable technique is developed to fabricate nanocrescent arrays with low‐structural symmetry unit cells to achieve in‐plane… read more here.
Keywords: arrays nanolasing; symmetry; engineering symmetry; breaking nanocrescent ... See more keywords
Double‐Lattice Packing of Pentagonal Gold Bipyramids in Supercrystals with Triclinic Symmetry
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202200883
Abstract: Pentagonal packing is a long‐standing issue and a rich mathematical topic, brought to the fore by recent progress in nanoparticle design. Gold pentagonal bipyramids combine fivefold symmetry and anisotropy and their section varies along the… read more here.
Keywords: gold; double lattice; pentagonal gold; symmetry ... See more keywords
Hidden Local Symmetry Breaking in Silver Diamondoid Compounds is Root Cause of Ultralow Thermal Conductivity
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202202255
Abstract: Typically, conventional structure transitions occur from a low symmetry state to a higher symmetry state upon warming. In this work, an unexpected local symmetry breaking in the tetragonal diamondoid compound AgGaTe2 is reported, which, upon… read more here.
Keywords: diamondoid; state; symmetry breaking; symmetry ... See more keywords
Coordination Symmetry Breaking of Single‐Atom Catalysts for Robust and Efficient Nitrate Electroreduction to Ammonia
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202205767
Abstract: Nitrate electrocatalytic reduction (NO3RR) for ammonia production is a promising strategy to close the N‐cycle from nitration contamination, as well as an alternative to the Haber–Bosch process with less energy consumption and carbon dioxide release.… read more here.
Keywords: coordination symmetry; coordination; symmetry breaking; atom catalysts ... See more keywords
Polarization-Induced Chirality in Metamaterials via Optomechanical Interaction
Sign Up to like & getrecommendations! Published in 2017 at "Advanced Optical Materials"
DOI: 10.1002/adom.201600760
Abstract: A novel type of metamaterial is introduced, where the structural symmetry can be controlled by optical forces. Since symmetry sets fundamental bounds on the optical response, symmetry breaking changes the properties of metamaterials qualitatively over… read more here.
Keywords: polarization; polarization induced; symmetry; chirality metamaterials ... See more keywords
Nanoscale Optical Imaging of 2D Semiconductor Stacking Orders by Exciton‐Enhanced Second Harmonic Generation
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Optical Materials"
DOI: 10.1002/adom.202200085
Abstract: Second harmonic generation (SHG) is a nonlinear optical response arising exclusively from broken inversion symmetry in the electric-dipole limit. Recently, SHG has attracted widespread interest as a versatile and noninvasive tool for characterization of crystal… read more here.
Keywords: harmonic generation; optical imaging; nanoscale optical; symmetry ... See more keywords
Reduced Local Symmetry in Lithium Compound Li2SrSiO4 Distinguished by an Eu3+ Spectroscopy Probe
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Science"
DOI: 10.1002/advs.201802126
Abstract: Abstract Research on lithium compounds has attracted much attention nowadays. However, to elucidate the precise structure of lithium compounds is a challenge, especially when considering the small ions that may be transferred between the interstitial… read more here.
Keywords: local symmetry; reduced local; lithium; symmetry ... See more keywords
High‐Resolution In‐Situ Synchrotron X‐Ray Studies of Inorganic Perovskite CsPbBr3: New Symmetry Assignments and Structural Phase Transitions
Sign Up to like & getrecommendations! Published in 2021 at "Advanced Science"
DOI: 10.1002/advs.202003046
Abstract: Abstract Perovskite photovoltaic ABX3 systems are being studied due to their high energy‐conversion efficiencies with current emphasis placed on pure inorganic systems. In this work, synchrotron single‐crystal diffraction measurements combined with second harmonic generation measurements… read more here.
Keywords: phase; high resolution; resolution situ; symmetry ... See more keywords
Fluid Layered Ferroelectrics with Global C∞v Symmetry
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DOI: 10.1002/advs.202202048
Abstract: Ferroelectricity in fluid materials, which allows free rotation of molecules, is an unusual phenomenon raising cutting‐edge questions in science. Conventional ferroelectric liquid crystals have been found in phases with low symmetry that permit the presence… read more here.
Keywords: spontaneous polarization; ferroelectricity; symmetry; layered ferroelectrics ... See more keywords
Evolution and development of inflorescences and floral symmetry in Solanaceae
Sign Up to like & getrecommendations! Published in 2022 at "American Journal of Botany"
DOI: 10.1002/ajb2.1864
Abstract: Abstract Premise The inflorescences of Solanaceae are unique and complex, which has led to long‐standing disputes over floral symmetry mainly due to different interpretations of the cyme‐like inflorescence structure. The main disagreements have been over… read more here.
Keywords: floral symmetry; symmetry solanaceae; inflorescence; symmetry ... See more keywords