We employed a novel picoindenter (PI)/scanning electron microscopy (SEM) technique to measure the pull-off force of an individual electrospun poly(vinylidene fluoride) (PVDF) fibers. Individual fibers were deposited over a channel in a custom-designed silicon substrate, which was then attached to a picoindenter. The picoindenter was then positioned firmly on the sample stage of the SEM. The picoindenter tip laterally pushed individual fibers to measure the force required to detach it from the surface of substrate. SEM was used to visualize and document the process. The measured pull-off force ranged between 5.8 ± 0.2 μN to ~17.8 ± 0.2 μN for individual fibers with average diameter ranging from 0.8 to 2.3 μm. Thus, this study, a first of its kind, demonstrates the use of a picoindenter to measure the pull-off force of a single micro/nanofiber.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5615728 | PMC |
| http://dx.doi.org/10.3390/ma10091074 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Quantitative Measurement of Interfacial Adhesion of CVD Grown Bilayer WS on Various Substrates.
Small
December 2024
School of Mechanical and Materials Engineering, Indian Institute of Technology Mandi, Himachal Pradesh, 175075, India.
The interfacial adhesion between transition metal dichalcogenides (TMDs) and the growth substrate significantly influences the employment of flakes in various applications. Most previous studies have focused on MoS and graphene, particularly their interaction with SiO/Si substrates. In this work, the adhesion strength of CVD-grown bilayer WS is directly measured using the nano scratch technique on three different substrates-Sapphire, SiO/Si, and fused quartz.
View Article and Find Full Text PDFAdhesion of the mucilage envelope of seeds probed by sum frequency generation spectroscopy.
Soft Matter
December 2024
Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark.
The attachment of seeds to natural surfaces is important for the reproductive success of plants. This study investigates the adhesion mechanisms of seed mucilage to CaF and polystyrene surfaces, using sum frequency generation (SFG) vibrational spectroscopy and pull-off force measurements. The results show that the adhesion is driven by the formation of crystalline cellulose at the interface.
View Article and Find Full Text PDFPectin Mucilage Adhesion on a Flat Substrate: A Molecular Simulation Approach to Plant-Seed Adhesion.
Langmuir
December 2024
Department of Chemistry, Technical University of Darmstadt, 64287 Darmstadt, Germany.
We investigate the adhesion of pectin-mucilage-coated seeds to substrate surfaces, focusing on the effect of water content. It is known that the adhesion of pectin mucilage increases with water loss, eventually dropping to zero beyond a certain point. To explore this phenomenon, we develop and parametrize a coarse-grained many-body dissipative-particle dynamics (MDPD) model.
View Article and Find Full Text PDFEnhanced Electrostatic Dust Removal from Solar Panels Using Transparent Conductive Nano-Textured Surfaces.
Small
December 2024
Department of Mechanical Engineering, Massachusetts Institute of Technology, 127 Massachusetts Avenue, Cambridge, MA, 02142, USA.
Dust accumulation on solar panels is a mjor operational challenge faced by the photovoltaic industry. Removing dust using water-based cleaning is expensive and unsustainable. Dust repulsion via charge induction is an efficient way to clean solar panels and recover power output without consuming any water.
View Article and Find Full Text PDFCumulative effect of digital manufacturing techniques, preparation taper and finish line designs on the retention of aged temporary molar crowns - An in vitro study.
Saudi Dent J
November 2024
Department of Prosthetic Dental Sciences, King Saud University College of Dentistry, Riyadh, Saudi Arabia.
Objective: This study evaluated the effects of finish-line design, tooth preparation taper or total occlusal convergence (TOC), and digital production technology on the retention of provisional crowns for molars.
Material And Methods: Different taper angles (10° TOC and 20° TOC) and finish line designs (chamfer and shoulder) were used to prepare four mandibular first molar teeth. Two subgroups of the prepared teeth received temporary crowns that were either "Computer-Aided Design" and "Computer-Aided Manufacturing (CAD/CAM) milled or 3D printed.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!