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Showing 721 to 731 of 731 entries
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Characterization of Piezoelectric Properties of Ag-NPs Doped PVDF Nanocomposite Fibres Membrane Prepared by Near Field Electrospinning.

Combinatorial chemistry & high throughput screening

Pan CT, Dutt K, Yen CK, Kumar A, Kaushik AC, Wei DQ, Kumar A, Wen ZH, Hsu WH, Shiue YL.
PMID: 33653246
Comb Chem High Throughput Screen. 2021 Mar 01; doi: 10.2174/1386207324666210302100728. Epub 2021 Mar 01.

BACKGROUND: In this study, Near-field electrospinning (NFES) technique used with a cylindrical collector to fabricate a large area permanent piezoelectric micro and nanofibers by a prepared solution. NFES requires a small electric field to fabricate fibers.OBJECTIVE: The objective of...

Development of Polyvinylidene Fluoride Membrane via Assembly of Tannic Acid and Polyvinylpyrrolidone for Filtration of Oil/Water Emulsion.

Polymers

Nawi NIM, Ong Amat S, Bilad MR, Nordin NAHM, Shamsuddin N, Prayogi S, Narkkun T, Faungnawakij K.
PMID: 33810126
Polymers (Basel). 2021 Mar 22;13(6). doi: 10.3390/polym13060976.

Wastewater containing oil/water emulsion has a serious ecological impact and threatens human health. The impact worsens as its volume increases. Oil/water emulsion needs to be treated before it is discharged or reused again for processing. A membrane-based process is...

Detection of Low Cardiac Index using a Polyvinylidene Fluoride-Based Wearable Ring and Convolutional Neural Networks.

IEEE sensors journal

Ansari S, Golbus JR, Tiba MH, McCracken B, Wang L, Aaronson KD, Ward KR, Najarian K, Oldham KR.
PMID: 34504397
IEEE Sens J. 2021 Jul 01;21(13):14281-14289. doi: 10.1109/jsen.2020.3022273. Epub 2020 Nov 03.

This study investigated the use of a wearable ring made of polyvinylidene fluoride film to identify a low cardiac index (≤2 L/min). The waveform generated by the ring contains patterns that may be indicative of low blood pressure and/or...

Hydrophobic Polymeric Additives toward a Long-Term Robust Carbonaceous Mudstone Slope.

Polymers

Fu H, Chen C, Zha H, Yuan D, Gao QF, Zeng L, Jia C.
PMID: 33807945
Polymers (Basel). 2021 Mar 05;13(5). doi: 10.3390/polym13050802.

Slopes with carbonaceous mudstone (CM) are widely distributed in the southwest of China and have experienced numerous geological disasters in special climate, especially in rainfall conditions. Therefore, novel materials to stabilize CM slopes have attracted increasing interests. However, developing...

A New Method to Perform Direct Efficiency Measurement and Power Flow Analysis in Vibration Energy Harvesters.

Sensors (Basel, Switzerland)

Kunz J, Fialka J, Pikula S, Benes P, Krejci J, Klusacek S, Havranek Z.
PMID: 33808222
Sensors (Basel). 2021 Mar 30;21(7). doi: 10.3390/s21072388.

Measuring the efficiency of piezo energy harvesters (PEHs) according to the definition constitutes a challenging task. The power consumption is often established in a simplified manner, by ignoring the mechanical losses and focusing exclusively on the mechanical power of...

On the Efficiency of a Piezoelectric Energy Harvester under Combined Aeroelastic and Base Excitation.

Micromachines

Stamatellou AM, Kalfas AI.
PMID: 34442584
Micromachines (Basel). 2021 Aug 14;12(8). doi: 10.3390/mi12080962.

A flutter-type, nonlinear piezoelectric energy harvester was tested in various combinations of aerodynamic and harmonic base excitation to study its power output and efficiency. The commercial polyvinylidene fluoride film transducer LDT1-028K was used in 33 excitation mode. The aerodynamic...

Applying Membrane Distillation for the Recovery of Nitrate from Saline Water Using PVDF Membranes Modified as Superhydrophobic Membranes.

Polymers

Ebrahimi F, Orooji Y, Razmjou A.
PMID: 33255434
Polymers (Basel). 2020 Nov 24;12(12). doi: 10.3390/polym12122774.

In this study, a flat sheet direct contact membrane distillation (DCMD) module was designed to eliminate nitrate from water. A polyvinylidene fluoride (PVDF) membrane was used in a DCMD process at an ambient pressure and at a temperature lower...

Characterization of Piezoelectric Properties of Ag-NPs Doped PVDF Nanocomposite Fibres Membrane Prepared by Near Field Electrospinning.

Combinatorial chemistry & high throughput screening

Pan CT, Dutt K, Yen CK, Kumar A, Kaushik AC, Wei DQ, Kumar A, Wen ZH, Hsu WH, Shiue YL.
PMID: 33653246
Comb Chem High Throughput Screen. 2021 Mar 01; doi: 10.2174/1386207324666210302100728. Epub 2021 Mar 01.

BACKGROUND: In this study, Near-field electrospinning (NFES) technique used with a cylindrical collector to fabricate a large area permanent piezoelectric micro and nanofibers by a prepared solution. NFES requires a small electric field to fabricate fibers.OBJECTIVE: The objective of...

Photoelectrocatalytic mechanism of PEDOT modified filtration membrane.

The Science of the total environment

Shi L, Liu J, Gao B, Sillanpää M.
PMID: 34923007
Sci Total Environ. 2021 Dec 16;813:152397. doi: 10.1016/j.scitotenv.2021.152397. Epub 2021 Dec 16.

The generation of free radicals is the key to the photocatalytic efficiency. In this study, the degradation mechanism of photoelectrocatalysis (PEC) membrane could be adequately explained by exploring the generation pathway of different free radicals. The PEC membrane was...

Electrical conductivity of polyvinylidene fluoride nanocomposites with carbon nanotubes and nanofibers.

Journal of nanoscience and nanotechnology

He L, Tjong SC.
PMID: 22408970
J Nanosci Nanotechnol. 2011 Dec;11(12):10668-72. doi: 10.1166/jnn.2011.3999.

Polyvinylidene fluoride nanocomposites with low loading levels of pristine multiwalled carbon nanotubes, carboxyl functionalized multiwalled carbon nanotubes and vapor grown carbon nanofibers were prepared by a versatile coagulation method. The alternating current electrical conductivity of these composites in the...

Temporal Evolution of Pressure Generated by a Nanosecond Laser Pulse Used for Assessment of Adhesive Strength of the Tungsten-Zirconium-Borides Coatings.

Materials (Basel, Switzerland)

Radziejewska J, Kaczmarek A, Mościcki T, Hoffman J.
PMID: 34885266
Materials (Basel). 2021 Nov 23;14(23). doi: 10.3390/ma14237111.

The article presents theoretical and experimental study of shock waves induced by a nanosecond laser pulse. Generation of surface plasma pressure by ablation of the graphite absorption layer in water medium and shock wave formation were analyzed theoretically and...

Showing 721 to 731 of 731 entries