Poly(vinylidene fluoride) (PVDF) is a semicrystalline thermoplastic polymer that is of interest for sensor, actuator and biomedical applications because of its piezoelectric and pyroelectric properties, as well as outstanding mechanical and chemical properties. Although it is known that the shear-induced crystallization behavior of nanocomposites can be significantly affected by the presence of...

In this paper, a PVDF film sensor was used to measure the transient responses of a cantilever beam subjected to an impact loading. The measurement capability of a PVDF sensor is affected by the area of the PVDF film sensor and the signal conditioner (charge amplifier). The influences of these effects on the experimental measurements were investigated. The transient responses for the dynamic str...

The electrochemical and electromechanical properties of actuators based on an ionic fluoropolymer (NafionTM) and non-ionic fluoropolymer (poly(vinylidene fluoride-co-hexafluoropropylene) [PVdF(HFP)]) gel fabricated using a single-walled carbon nanotube (SWCNT) – an ionic liquid (IL) gel electrode, were compared with those of actuators based on a non-ionic fluoropolymer (PVdF(HFP)). The ionic co...

Western blotting is an analytical technique used to detect specific proteins in a given sample of tissue homogenate or extract. It uses gel electrophoresis to separate native or denatured proteins by the length of the polypeptide (denaturing conditions) or by the 3-D structure of the protein (native/ non-denaturing conditions). The proteins are then transferred to a membrane (typically nitrocel...

A high-throughput method for sequencing of N termini of proteins by using postsource decay (PSD) of matrix-assisted laser desorption/ionization mass spectrometry has been developed. After a protein blotted on the PVDF membrane was successively reduced, S-alkylated, and guanidinated, its N-amino group was coupled to biotinylcysteic acid. The protein was then extracted from the membrane and diges...

Noninvasive objective evaluation of nasal airflow is one of the important clinical aspects. The developed polyvinylidene fluoride (PVDF) sensor enables measurement of airflow through each side of the nose using its piezoelectric property. This study was designed to evaluate the diagnostic capability of the PVDF sensor in assessing the deviated nasal septum (DNS). PVDF nasal sensor uses its piez...

Among various types of energy storage, the supercapacitor is regarded as most promising device due to its long cycling life, good stability, and high power density. A generally composed electrodes, electrolytes, a separator. The separator one important components, serving prevent internal short circuits between anode cathode. Herein, nanostructured-based in PAN/PVDF nanofiber scheme introduced ...