Multi-functional supramolecular building blocks with hydroxy piperidino groups: new opportunities for developing nonlinear optical ionic crystals

CrystEngComm ◽  
2016 ◽  
Vol 18 (31) ◽  
pp. 5832-5841 ◽  
Author(s):  
Kang-Hyun Lee ◽  
Seung-Heon Lee ◽  
Hoseop Yun ◽  
Mojca Jazbinsek ◽  
Jun Wan Kim ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Building Blocks ◽  
Ionic Crystals

Triphenyl moieties as building blocks for obtaining molecular glasses with nonlinear optical activity

2012 ◽  
Vol 22 (22) ◽  
pp. 11268 ◽  
Author(s):  
Kaspars Traskovskis ◽  
Igors Mihailovs ◽  
Andrejs Tokmakovs ◽  
Andrejs Jurgis ◽  
Valdis Kokars ◽  
...  
Keyword(s):  
Optical Activity ◽  
Nonlinear Optical ◽  
Building Blocks ◽  
Molecular Glasses

scholarly journals A family of ionic supersalts with covalent-like directionality and unconventional multiferroicity

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yaxin Gao ◽  
Menghao Wu ◽  
Puru Jena
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Building Blocks ◽  
Cluster Ions ◽  
Ionic Crystals ◽  
Functional Theory ◽  
Reversible Strain ◽  
Ionic Bonding ◽  
Cluster Ion ◽  
Ferroelectric Switching

AbstractIonic crystals composed of elemental ions such as NaCl are non-polar due to directionless ionic bonding interactions. Here, we show that these can develop polarity by changing their building blocks from elemental ions to superalkali and superhalogen cluster-ions, which mimic the chemistry of alkali and halogen atoms, respectively. Due to the non-spherical geometries of these cluster ions, corresponding supersalts form anisotropic polar structures with ionic bonding, yet covalent-like directionality, akin to sp3 hybridized systems. Using density functional theory and extensive structure searches, we predict a series of stable ferroelectric/ferroelastic supersalts, PnH4MX4 (Pn = N, P; M = B, Al, Fe; X = Cl, Br) composed of superalkali PnH4 and superhalogen MX4 ions. Unlike traditional ferroelectric/ferroelastic materials, the cluster-ion based supersalts possess ultra-low switching barrier and can endure large ion displacements and reversible strain. In particular, PH4FeBr4 exhibits triferroic coupling of ferroelectricity, ferroelasticity, and antiferromagnetism with controllable spin directions via either ferroelastic or 90-degree ferroelectric switching.

scholarly journals Polarimetric Measurements of Surface Chirality Based on Linear and Nonlinear Light Scattering

2021 ◽  
Vol 8 ◽  
Author(s):  
Ankur Gogoi ◽  
Surajit Konwer ◽  
Guan-Yu Zhuo
Keyword(s):  
Conformational Changes ◽  
Nonlinear Optical ◽  
Building Blocks ◽  
Mirror Image ◽  
Optical Methods ◽  
Label Free ◽  
Chiral Drugs ◽  
Critical Issues ◽  
Linear And Nonlinear ◽  
Nonlinear Light Scattering

A molecule, molecular aggregate, or protein that cannot be superimposed on its mirror image presents chirality. Most living systems are organized by chiral building blocks, such as amino acids, peptides, and carbohydrates, and any change in their molecular structure (i.e., handedness or helicity) alters the biochemical and pharmacological functions of the molecules, many of which take place at surfaces. Therefore, studying surface chirogenesis at the nanoscale is fundamentally important and derives various applications. For example, since proteins contain highly ordered secondary structures, the intrinsic chirality can be served as a signature to measure the dynamics of protein adsorption and protein conformational changes at biological surfaces. Furthermore, a better understanding of chiral recognition and separation at bio-nanointerfaces is helpful to standardize chiral drugs and monitor the synthesis of adsorbents with high precision. Thus, exploring the changes in surface chirality with polarized excitations would provide structural and biochemical information of the adsorbed molecules, which has led to the development of label-free and noninvasive measurement tools based on linear and nonlinear optical effects. In this review, the principles and selected applications of linear and nonlinear optical methods for quantifying surface chirality are introduced and compared, aiming to conceptualize new ideas to address critical issues in surface biochemistry.

Optical Metasurfaces: Progress and Applications

2018 ◽  
Vol 48 (1) ◽  
pp. 279-302 ◽  
Author(s):  
Shengyuan Chang ◽  
Xuexue Guo ◽  
Xingjie Ni
Keyword(s):  
Nonlinear Optical ◽  
Berry Phase ◽  
Three Dimensional ◽  
Building Blocks ◽  
Wave Fronts ◽  
The Past ◽  
Mie Resonance ◽  
Optical Effects ◽  
Nonlinear Optical Effects ◽  
Phase Amplitude

A metasurface is an artificial nanostructured interface that has subwavelength thickness and that manipulates light by spatially arranged meta-atoms—fundamental building blocks of the metasurface. Those meta-atoms, usually consisting of plasmonic or dielectric nanoantennas, can directly change light properties such as phase, amplitude, and polarization. As a derivative of three-dimensional (3D) metamaterials, metasurfaces have been emerging to tackle some of the critical challenges rooted in traditional metamaterials, such as high resistive loss from resonant plasmonic components and fabrication requirements for making 3D nanostructures. In the past few years, metasurfaces have achieved groundbreaking progress, providing unparalleled control of light, including constructing arbitrary wave fronts and realizing active and nonlinear optical effects. This article provides a systematic review of the current progress in and applications of optical metasurfaces, as well as an overview of metasurface building blocks based on plasmonic resonances, Mie resonance, and the Pancharatnam-Berry phase.

Ferroelectric domain building blocks for photonic and nonlinear optical microstructures in LiNbO3

2014 ◽  
Vol 115 (12) ◽  
pp. 124102 ◽  
Author(s):  
G. Zisis ◽  
C. Y. J. Ying ◽  
E. Soergel ◽  
S. Mailis
Keyword(s):  
Nonlinear Optical ◽  
Building Blocks ◽  
Ferroelectric Domain
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