相关实验视频

Updated: Jun 12, 2025

Investigating Single Molecule Adhesion by Atomic Force Spectroscopy

Investigating Single Molecule Adhesion by Atomic Force Spectroscopy

Published on: February 27, 2015

使用原子力显微镜对四甲化水合物颗粒之间的粘附力进行研究

Fan Xiao¹, Wei Wang¹, Longxin Chen¹

¹Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, State Key Laboratory of Natural Gas Hydrates, China University of Petroleum, Beijing. No. 18 Fuxue Road, Changping District, 102249 Beijing, P. R. China.

Langmuir : the ACS journal of surfaces and colloids

|September 24, 2024

概括

甲 (TBAB) 水合物颗粒之间的附着力随着温度的增加而增加,但随着TBAB度的增加而减少. 这与水合物颗粒表面准液体层 (QLL) 厚度的变化有关.

科学领域:

物理化学物理化学
材料科学材料科学材料科学
体科学体科学体科学

背景情况:

对于多相系统来说,了解粒子间力量至关重要.
甲基 (TBAB) 水合物在各种工业过程中具有重要意义.
准液态层 (QLL) 影响粒子相互作用和稳定性.

研究的目的:

为了研究TBAB水合物颗粒之间的粘附力.
为了确定温度和TBAB度对粘附的影响.
为了将粘附力与准液体层 (QLL) 的厚度相关联.

主要方法:

用原子力显微镜 (AFM) 来测量粘附力.
用一个粘附力模型来计算QLL厚度.
实验是在不同的温度和TBAB度 (0-30重量%) 进行的.

主要成果:

附着力随着温度的增加而增加,在30重%的TBAB,归因于增加了QLL厚度.
粘附力随着253K的TBAB度增加而减少.
较高的TBAB度导致更薄的QLL,可能是由于水合物转化率的改变.

结论:

QLL厚度是控制TBAB水合物颗粒之间的粘附的一个关键因素.
温度和TBAB度显著影响QLL厚度,从而影响粘合力.
这些发现为分散系统中水合物颗粒的行为提供了洞察力.

更多相关视频

Covalent Attachment of Single Molecules for AFM-based Force Spectroscopy

Covalent Attachment of Single Molecules for AFM-based Force Spectroscopy

Published on: March 16, 2020

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

相关概念视频

Atomic Force Microscopy

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

Intermolecular Forces

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...