scholarly journals Surface forces measurement for materials science

2019 ◽  
Vol 91 (4) ◽  
pp. 707-716 ◽  
Author(s):  
Kazue Kurihara
Keyword(s):  
Soft Matter ◽  
Materials Science ◽  
Resonance Method ◽  
Surface Force ◽  
Surface Forces ◽  
Liquid Interfaces ◽  
Science Field ◽  
Confined Liquids ◽  
History Of ◽  
Solid Liquid

Abstract This article reviews the surface forces measurement as a novel tool for materials science. The history of the measurement is briefly described in the Introduction. The general overview covers specific features of the surface forces measurement as a tool for studying the solid-liquid interface, confined liquids and soft matter. This measurement is a powerful way for understanding interaction forces, and for characterizing (sometime unknown) phenomena at solid-liquid interfaces and soft complex matters. The surface force apparatus (SFA) we developed for opaque samples can study not only opaque samples in various media, but also electrochemical processes under various electrochemical conditions. Electrochemical SFA enables us to determine the distribution of counterions between strongly bound ones in the Stern layer and those diffused in the Gouy-Chapman layer. The shear measurement is another active area of the SFA research. We introduced a resonance method, i.e. the resonance shear measurement (RSM), that is used to study the effective viscosity and lubricity of confined liquids in their thickness from μm to contact. Advantages of these measurements are discussed by describing examples of each measurement. These studies demonstrate how the forces measurement is used for characterizing solid-liquid interfaces, confined liquids and reveal unknown phenomena. The readers will be introduced to the broad applications of the forces measurement in the materials science field.

scholarly journals Correlating steric hydration forces with water dynamics through surface force and diffusion NMR measurements in a lipid–DMSO–H2O system

2015 ◽  
Vol 112 (34) ◽  
pp. 10708-10713 ◽  
Author(s):  
Alex M. Schrader ◽  
Stephen H. Donaldson ◽  
Jinsuk Song ◽  
Chi-Yuan Cheng ◽  
Dong Woog Lee ◽  
...  
Keyword(s):  
Soft Matter ◽  
Lipid Membrane ◽  
Surface Force ◽  
Surface Forces ◽  
Water Dynamics ◽  
Head Group ◽  
Colloidal Systems ◽  
Dimethyl Phosphate ◽  
Head Groups ◽  
Dmso Concentration

Dimethyl sulfoxide (DMSO) is a common solvent and biological additive possessing well-known utility in cellular cryoprotection and lipid membrane permeabilization, but the governing mechanisms at membrane interfaces remain poorly understood. Many studies have focused on DMSO–lipid interactions and the subsequent effects on membrane-phase behavior, but explanations often rely on qualitative notions of DMSO-induced dehydration of lipid head groups. In this work, surface forces measurements between gel-phase dipalmitoylphosphatidylcholine membranes in DMSO–water mixtures quantify the hydration- and solvation-length scales with angstrom resolution as a function of DMSO concentration from 0 mol% to 20 mol%. DMSO causes a drastic decrease in the range of the steric hydration repulsion, leading to an increase in adhesion at a much-reduced intermembrane distance. Pulsed field gradient NMR of the phosphatidylcholine (PC) head group analogs, dimethyl phosphate and tetramethylammonium ions, shows that the ion hydrodynamic radius decreases with increasing DMSO concentration up to 10 mol% DMSO. The complementary measurements indicate that, at concentrations below 10 mol%, the primary effect of DMSO is to decrease the solvated volume of the PC head group and that, from 10 mol% to 20 mol%, DMSO acts to gradually collapse head groups down onto the surface and suppress their thermal motion. This work shows a connection between surface forces, head group conformation and dynamics, and surface water diffusion, with important implications for soft matter and colloidal systems.

Investigating how vesicle size influences vesicle adsorption on titanium oxide: a competition between steric packing and shape deformation

2017 ◽  
Vol 19 (3) ◽  
pp. 2131-2139 ◽  
Author(s):  
Abdul Rahim Ferhan ◽  
Joshua A. Jackman ◽  
Nam-Joon Cho
Keyword(s):  
Titanium Oxide ◽  
Soft Matter ◽  
Lipid Vesicles ◽  
Shape Deformation ◽  
Liquid Interfaces ◽  
Supported Lipid Bilayer ◽  
Vesicle Size ◽  
Practical Applications ◽  
Vesicle Adsorption ◽  
Solid Liquid

Understanding the adsorption behavior of lipid vesicles at solid–liquid interfaces is important for obtaining fundamental insights into soft matter adsorbates as well as for practical applications such as supported lipid bilayer (SLB) fabrication.

Ultrafast dynamics at solid/liquid interfaces as investigated by photothermal spectroscopy

2001 ◽  
Vol 73 (10) ◽  
pp. 1613-1623 ◽  
Author(s):  
Tsuguo Sawada
Keyword(s):  
Materials Science ◽  
Science And Technology ◽  
Solid Surfaces ◽  
Ultrafast Dynamics ◽  
Nanoscale Materials ◽  
Liquid Interfaces ◽  
Photothermal Spectroscopy ◽  
Solid Liquid

Among the recent topics of photothermal (PT) applications of lasers, we focus on ultrafast (<=1.0 ns) photothermal/photoacoustic (PT/PA) phenomena occurring at interfaces, which play important roles in nanoscale materials science and technology. Here, we describe our recently developed novel PT techniques called transient reflecting grating (TRG) spectrometries. These techniques have been applied to the studies of solid surfaces, film substrates, and solid/liquid interfaces.

scholarly journals Solid–Liquid Interfaces: Molecular Structure, Thermodynamics, and Crystallization

MRS Bulletin ◽  
2004 ◽  
Vol 29 (12) ◽  
pp. 920-926 ◽  
Author(s):  
Mark Asta ◽  
Frans Spaepen ◽  
J. Friso van der Veen
Keyword(s):  
Materials Science ◽  
Morphological Evolution ◽  
Crystalline Solid ◽  
Liquid Interfaces ◽  
New Developments ◽  
Liquid Phases ◽  
Living Organisms ◽  
Solid Liquid ◽  
Theory And Modeling

AbstractMaterials phenomena ranging from the melting or freezing of ice to biomineralization in living organisms, to lubrication and the commercial casting of superalloys, are known to be critically influenced by molecular-scale structure and processes occurring at the interfaces between the crystalline solid and liquid phases. The properties of solid–liquid interfaces have long been a topic of intense interest in materials science, primarily because of their role in governing nucleation, growth, and morphological evolution in crystal growth from the melt or solutions.This issue of the MRS Bulletin provides an overview, highlighting new developments in experiment, theory, and modeling techniques that have led to substantial recent progress in the characterization of the molecular-level structural and thermodynamic properties of solid–liquid interfaces and their consequences for a variety of crystallization phenomena.

Bovine submaxillary mucin (BSM) adsorption at solid/ liquid interfaces and surface forces

1984 ◽  
Vol 10 ◽  
pp. 43-52 ◽  
Author(s):  
Jacques Emile Proust ◽  
Adam Baszkin ◽  
Eric Perez ◽  
Marie Martine Boissonnade
Keyword(s):  
Surface Forces ◽  
Liquid Interfaces ◽  
Bovine Submaxillary Mucin ◽  
Solid Liquid

Surface forces and colloidal behaviour

Surfactants ◽  
2019 ◽  
pp. 269-313
Author(s):  
Bob Aveyard
Keyword(s):  
Dlvo Theory ◽  
Surface Forces ◽  
Polymer Chains ◽  
Dispersion Forces ◽  
Liquid Interfaces ◽  
Surface Separation ◽  
Adsorbed Polymer ◽  
The Stability ◽  
Solid Liquid ◽  
Hydration Forces

The landmark DLVO theory of colloid stability sought to explain the stability of lyophobic colloids in terms of the interplay between attractive dispersion forces, and repulsive electrical (Coulombic) forces between particle surfaces. The net interaction energy between two particles (resulting from these so-called surface forces) as a function of surface separation can exhibit a maximum, a deep (primary) minimum and/or a shallow (secondary) minimum, giving stable, unstable or weakly flocculated dispersions. Other surface forces include steric forces arising from grafted or adsorbed polymer chains on the surfaces. Unadsorbed polymer can result in attractive depletion forces between particles, and polymer molecules that bridge particles can cause flocculation. Other forces mentioned are oscillatory structural forces, attractive hydrophobic forces and repulsive hydration forces between surfaces in water. Direct measurement of surface forces between both solid/liquid interfaces and between liquid/liquid interfaces is discussed at the end of the chapter.

scholarly journals BioRef: The Reflectometer for Biological Applications (V18) at BER II

2016 ◽  
Vol 2 ◽  
Author(s):  
Marcus Trapp
Keyword(s):  
Soft Matter ◽  
Time Of Flight ◽  
In Situ Measurements ◽  
Biological Applications ◽  
Liquid Interfaces ◽  
Neutron Reflectometer ◽  
Solid Liquid

The time-of-flight neutron reflectometer BioRef is dedicated to the investigation of solid-liquid interfaces, in particular for soft matter applications. The possibility to mount a FTIR-ATR to the sample stage offers the possibility of combined in-situ measurements.

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