Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

VSEPR Theory and the Effect of Lone Pairs04:01

VSEPR Theory and the Effect of Lone Pairs

53.0K
Effect of Lone Pairs of Electrons on Molecule Geometry
53.0K
Nonlinear Pharmacokinetics: Causes of Nonlinearity01:22

Nonlinear Pharmacokinetics: Causes of Nonlinearity

722
Nonlinearity in drug pharmacokinetics is caused by various factors influencing how a drug is absorbed, distributed, metabolized, and excreted. Understanding these nonlinear processes is crucial for predicting drug behavior in the body and optimizing drug dosing regimens.
Nonlinear drug absorption can occur when the process is rate-limited by solubility, carrier-mediated transport systems, or saturation of the presystemic gut wall or hepatic metabolism. For instance, high doses of riboflavin...
722
DNA Base Pairing02:27

DNA Base Pairing

33.1K
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
33.1K
DNA Base Pairing02:27

DNA Base Pairing

32.2K
32.2K
Application of Nonlinear Inequalities01:29

Application of Nonlinear Inequalities

249
A nonlinear inequality describes a comparison involving an expression that curves or behaves more complexly than a straight line. These inequalities often appear in forms that include squares, products, or variables in the denominator.To solve such an inequality, one starts by rewriting it so that zero appears on one side. For example, the inequality:  can be factored as: This form makes it easier to identify the values that cause the expression to equal zero. In this case, the...
249
Introduction to Nonlinear Inequalities01:25

Introduction to Nonlinear Inequalities

221
Linear and nonlinear inequalities are fundamental for analyzing variable relationships and identifying ranges satisfying specific conditions. A linear inequality involves variables raised only to the first power, resulting in a straight-line graph. This line partitions the coordinate plane into two distinct regions: one that satisfies the inequality and one that does not. Each region represents a set of solutions where the linear relationship holds true under the specified constraint.Nonlinear...
221

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Preoperative Transcutaneous Electrical Acupoint Stimulation Alleviates Postoperative Pain and Improves Sleep Quality in Breast Cancer Patients with Preoperative Sleep Disturbance: A Partially Randomized Controlled Trial.

Journal of pain research·2026
Same author

Discovery and optimization of a novel non-nitrocatechol COMT inhibitor for modulating levodopa metabolism.

Journal of pharmaceutical analysis·2026
Same author

AI-assisted case-based learning and flipped classroom to improve clinical decision-making: a randomized controlled trial in reproductive medicine.

Medical education online·2026
Same author

Lateral flow assays for rapid detection of drugs of abuse: A review focusing on nanomaterial labels and intelligent analysis.

Talanta·2026
Same author

Magnetic graphene-imine-linked covalent organic polymer composites for fast extraction and UPLC-MS/MS quantification of 14 trace drugs of abuse and their metabolites in wastewater.

Journal of chromatography. A·2026
Same author

Optical probes for bioimaging of tumor-infiltrating immune cells and their applications in cancer immunotherapy.

Chemical Society reviews·2026

Related Experiment Video

Updated: Jan 29, 2026

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
04:54

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

3.8K

Lone pair effects on ternary infrared nonlinear optical materials.

Ruonan Yin1, Cong Hu, Bing-Hua Lei

  • 1CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics & Chemistry, CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, 40-1 South Beijing Road, Urumqi 830011, China. zhyang@ms.xjb.ac.cn.

Physical Chemistry Chemical Physics : PCCP
|February 16, 2019
PubMed
Summary

This study reveals that the second harmonic generation (SHG) response in noncentrosymmetrical (NCS) materials is influenced by both lone pair activity and crystal layer orientation. This clarifies mechanisms for developing new infrared optical materials.

More Related Videos

Biomolecular Imaging of Cellular Uptake of Nanoparticles using Multimodal Nonlinear Optical Microscopy
07:13

Biomolecular Imaging of Cellular Uptake of Nanoparticles using Multimodal Nonlinear Optical Microscopy

Published on: May 16, 2022

2.3K
Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy
07:49

Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy

Published on: February 20, 2020

9.9K

Related Experiment Videos

Last Updated: Jan 29, 2026

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
04:54

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

3.8K
Biomolecular Imaging of Cellular Uptake of Nanoparticles using Multimodal Nonlinear Optical Microscopy
07:13

Biomolecular Imaging of Cellular Uptake of Nanoparticles using Multimodal Nonlinear Optical Microscopy

Published on: May 16, 2022

2.3K
Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy
07:49

Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy

Published on: February 20, 2020

9.9K

Area of Science:

  • Materials Science
  • Solid State Physics
  • Computational Chemistry

Background:

  • Noncentrosymmetrical (NCS) materials are crucial for nonlinear optical (NLO) applications.
  • Understanding the origins of NLO properties, such as second harmonic generation (SHG), is key to designing new materials.
  • The role of lone pair stereochemical activity in NCS materials requires further theoretical investigation.

Purpose of the Study:

  • To investigate the crystal structures, electronic structures, and optical properties of NCS materials K3AsS4, Li3AsS3, Pb9As4S15, and Ag3AsS3.
  • To elucidate the correlation between crystal structure, lone pair stereochemical activity of As-S groups, and SHG response.
  • To develop a universal theoretical method for quantifying lone pair activity in various systems.

Main Methods:

  • First-principles calculations using density functional theory (DFT).
  • Theoretical computation of lone pair stereochemical activity intensity for As-S groups.
  • Analysis of crystal structure arrangements and electronic properties.

Main Results:

  • The SHG response is determined by both the lone pair stereochemical activity of As-S groups and the orientation of crystal structure layers.
  • A quantitative and universal method for assessing lone pair stereochemical activity was developed.
  • The method is applicable to other lone pair systems, including those with Pb2+, Bi3+, and Sn2+.

Conclusions:

  • The study clarifies the complex interplay governing SHG in NCS materials.
  • The findings provide a pathway for exploring materials with significant second-order NLO responses for infrared applications.
  • The developed quantitative method offers a valuable tool for future materials discovery.