Advertisement

Topics

Crystallinelike Ordering of Confined Liquids at the Moving Contact Line.

08:00 EDT 29th March 2019 | BioPortfolio

Summary of "Crystallinelike Ordering of Confined Liquids at the Moving Contact Line."

The friction between a liquid swollen soft elastomer and a solid surface depends on the state of a confined liquid. To measure the physical state of the confined liquid, an interface-sensitive sum frequency generation spectroscopy technique was used to probe the contact region. We find that during sliding (friction) and pull-off (adhesion) experiments of pentadecane-swollen poly(dimethyl siloxane) lenses submerged in linear alkane (pentadecane) on a sapphire substrate, crystallinelike ordering of the liquid occurs only at the contact line, where we anticipate the highest shear. This crystallinelike structure of pentadecane molecules is transient and shows Arrhenius temperature dependence with unusually long relaxation times (hundreds of seconds) and an activation energy (50  kJ/mole), which is twice that of the bulk pentadecane liquid, at temperatures that are 14-70 °C higher than the bulk melting temperature (T_{m}=9 °C). This unusual long-lived crystallinelike ordering may explain why these systems show higher friction coefficients (boundary lubrication) compared to values predicted using bulk viscosity of pentadecane (hydrodynamic lubrication).

Affiliation

Journal Details

This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 128004

Links

DeepDyve research library

PubMed Articles [6951 Associated PubMed Articles listed on BioPortfolio]

Crystal-confined freestanding ionic liquids for reconfigurable and repairable electronics.

Liquid sensors composed of ionic liquids are rising as alternatives to solid semiconductors for flexible and self-healing electronics. However, the fluidic nature may give rise to leakage problems in ...

Extraction of silicone uncrosslinked chains at air-water-PDMS triple lines.

Silicone elastomers such as polydimethylsiloxane (PDMS) are convenient materials routinely used in laboratories that combine ease of preparation, flexibility, transparency and gas permeability. Howeve...

Glass Transition in Supercooled Liquids with Medium-Range Crystalline Order.

The origin of the rapid dynamical slowdown in glass forming liquids in the growth of static length scales, possibly associated with identifiable structural ordering, is a much debated issue. Growth of...

Contact line stick-slip motion and meniscus evolution on micrometer-size wavy fibres.

The architecture of complex-shaped fibres affects the motion of the contact line and the evolution of its associated menisci when a fibre is immersed into a liquid. Understanding and predicting the mo...

Lattice Boltzmann simulation of immiscible three-phase flows with contact-line dynamics.

A multiphase lattice Boltzmann method is developed to simulate immiscible three-phase flows with contact-line dynamics. In this method, the immiscible three-phase flow is modeled by a multiple-relaxat...

Clinical Trials [3902 Associated Clinical Trials listed on BioPortfolio]

Key Information Can Influence Clinician Ordering of Brain CTs

The frequency of head computed tomography (CT) imaging for mild head trauma patients has raised safety and cost concerns. Validated clinical decision rules exist in the published literatur...

Effect of Diagnostic Imaging Utilization Reports

Diagnostic imaging (DI) tests (for example, x-ray tests, ultrasounds, CT scans, or MRIs) are used by health care providers to help diagnose patient illness, but decisions regarding when th...

Observational Study of Early Contact With Palliative Care Unit for Patients Receiving First Line Palliative Chemotherapy With Cancer in Upper Gastrointestinal Canal, or Second Line Palliative Chemotherapy in Patients With Colorectal Cancer - an Open, Rand

In this trial, patients with cancer in the upper gastrointestinal canal who are going to receive first line palliative chemotherapy and patients with colorectal cancer who are going to rec...

Trial of Low Residue Diet Versus Clear Liquids Following Elective Colorectal Surgery

Prospective randomized controlled trial investigating commencement of low residue diet versus clear liquids on postoperative zero following elective colorectal surgery, with regards to pat...

Effects of Restaurant Menu Design on Food Ordering Outcomes

High cognitive load activities can influence energy intake from food. It is unknown how restaurant menu designs may affect patrons in terms of cognitive demand and subsequent ordering of f...

Medical and Biotech [MESH] Definitions

Aquatic vertebrate sensory system in fish and amphibians. It is composed of sense organs (canal organs and pit organs) containing neuromasts (MECHANORECEPTORS) that detect water displacement caused by moving objects.

A 3D printing technology where a computer-controlled moving laser beam is used to build up the required structure, layer by layer, from liquid POLYMERS that harden on contact with laser light (photopolymerization).

Moving or repositioning patients within their beds, from bed to bed, bed to chair, or otherwise from one posture or surface to another.

Collections of related records treated as a unit; ordering of such files.

A continuous cell line that is a substrain of SWISS 3T3 CELLS developed though clonal isolation. The mouse fibroblast cells undergo an adipose-like conversion as they move to a confluent and contact-inhibited state.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article