scholarly journals Bacteriophage nanofiber fabrication using near field electrospinning

RSC Advances ◽  
2019 ◽  
Vol 9 (67) ◽  
pp. 39111-39118
Author(s):  
Ryota Sugimoto ◽  
Ju Hun Lee ◽  
Ju-Hyuck Lee ◽  
Hyo-Eon Jin ◽  
So Young Yoo ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Near Field ◽  
Electrospinning Process ◽  
Crystalline Suspension

Using liquid crystalline suspension of the phage, we successfully fabricated nano- and microscale pure phage fibers. Through a near field electrospinning process, we fabricated the desired phage fiber pattern with tunable direction and spacing.

scholarly journals Concentric chiral nematic polymeric fibers from cellulose nanocrystals

2021 ◽  
Author(s):  
Arash Momeni ◽  
Christopher M. Walters ◽  
Yi-Tao Xu ◽  
Wadood Y. Hamad ◽  
Mark J. MacLachlan
Keyword(s):  
Cellulose Nanocrystals ◽  
Liquid Crystalline ◽  
Capillary Tube ◽  
Single Domain ◽  
Cellulose Nanocrystal ◽  
Polymeric Fibers ◽  
Chiral Nematic ◽  
Chiral Nematic Structure ◽  
Crystalline Suspension

A cellulose nanocrystal liquid crystalline suspension was mixed with monomers and confined to a capillary tube. After photopolymerization, a fiber with a single-domain concentric chiral nematic structure throughout the length of the fiber was obtained.

scholarly journals Accurate fabrication of aligned nanofibers via a double-nozzle near-field electrospinning

2019 ◽  
Vol 23 (4) ◽  
pp. 2143-2150 ◽  
Author(s):  
Guojie Xu ◽  
Han Wang ◽  
Zhifeng Wang ◽  
Jiarong Zhang ◽  
Rouxi Chen ◽  
...  
Keyword(s):  
Energy Harvester ◽  
Near Field ◽  
Wearable Sensors ◽  
Electrospinning Process ◽  
High Tech ◽  
Direct Write ◽  
Large Area ◽  
Aligned Nanofibers ◽  
Aligned Fibers ◽  
Key Factor

The near-field electrospinning is considered as one of the most effective techniques to direct-write aligned fibers which can be applied to various high-tech areas, including energy harvester, tissue engineering, and wearable sensors. For large area aligned pattern printing, the multi-nozzle electrohydrodynamic print-ing is an efficient method to enhance productivity. As a branch of electrohydro-dynamic printing technology, the near-field electrospinning is a crucial concern to make an investigation for the formation of aligned nanofibers. Here we fabricated various nanostructures from beaded fibers to aligned fibers and crimped fibers by the double-nozzle near-field electrospinning process. We found three key parameters affecting the process, including the collector speed, the applied voltage, and the electrode-to-collector distance, and the collector speed is the key factor affecting the crimped frequency. This paper provides a reliable experi-mental basis and theoretical guidance for the multi-nozzle near-field electrospin-ning to accurately direct-write microfibers and nanofibers.

Numerical Simulation of Viscous Jet for Near-Field Electrospinning

2009 ◽  
Vol 60-61 ◽  
pp. 465-469 ◽  
Author(s):  
Yuan Yuan Zhong ◽  
Gao Feng Zheng ◽  
Dao Heng Sun
Keyword(s):  
Numerical Simulation ◽  
Field Strength ◽  
Process Parameters ◽  
Near Field ◽  
Solution Concentration ◽  
Electrospinning Process ◽  
Substrate Distance ◽  
Viscous Jet ◽  
Set Up ◽  
The Impact

Near-Field Electrospinning (NFES) is a newly developed method to fabricate continuous and ordered solid nanofibers, with smaller spinneret-to-collector-distance the behavior of viscous jet would play a more prominent effect on the deposition and morphology of nanofiber. In this paper, a 2-dimentional physical model based on electrohydrodynamics and rheology was set up to discuss the morphology of viscous jet for NFES. The profile of the jet along z direction can be predicted by this model, and the impact of process parameters on the jet radius is analyzed. Radius of jet decreases with spinneret-to-substrate-distance decreasing; jet radius decreases with applied voltage and electric field strength increasing; jet electrospun from PEO solution is thinner than that from PVA solution with the same solution concentration; solution concentration has insignificant influence on the radius of jet from solution of the same polymer (PVA or PEO). This numerical simulation would improve the control of electrospinning process in NFES.

scholarly journals CaCO3/chitin-whisker hybrids: formation of CaCO3 crystals in chitin-based liquid-crystalline suspension

2010 ◽  
Vol 42 (7) ◽  
pp. 583-586 ◽  
Author(s):  
Yuya Yamamoto ◽  
Tatsuya Nishimura ◽  
Tsuguyuki Saito ◽  
Takashi Kato
Keyword(s):  
Liquid Crystalline ◽  
Crystalline Suspension

scholarly journals Reflection spectra and near-field images of a liquid crystalline half-Skyrmion lattice

2018 ◽  
Vol 26 (2) ◽  
pp. 1174 ◽  
Author(s):  
Jun-ichi Fukuda ◽  
Slobodan Žumer
Keyword(s):  
Liquid Crystalline ◽  
Near Field ◽  
Reflection Spectra

scholarly journals Fibers and Conductive Films Using Silver Nanoparticles and Nanowires by Near-Field Electrospinning Process

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Cheng-Tang Pan ◽  
Tsung-Lin Yang ◽  
Yi-Chian Chen ◽  
Cherng-Yuh Su ◽  
Shin-Pon Ju ◽  
...  
Keyword(s):  
Thin Films ◽  
Silver Nanoparticles ◽  
Sheet Resistance ◽  
Silver Nanowires ◽  
Near Field ◽  
Electrospinning Process ◽  
Conductive Films ◽  
Conductive Film ◽  
The Future ◽  
Transparent Conductive Electrodes

The silver nanowires (AgNWs) and silver nanoparticles (AgNPs) were synthesized. With near-field electrospinning (NFES) process, fibers and thin films with AgNPs and AgNWs were fabricated. In the NFES process, 10 k voltage was applied and the AgNPs and AgNWs fibers can be directly orderly collected without breaking and bending. Then, the characteristics of the fibers were analyzed by four-point probe and EDS. The conductive film was analyzed. When the thickness of films with AgNWs and AgNPs was 1.6 µm, the sheet resistance of films was 0.032 Ω/sq which was superior to that of the commercial ITO. The transmissivity of films was analyzed. The transmissivity was inversely proportional to sheet resistance of the films. In the future, the fibers and films can be used as transparent conductive electrodes.

A molecular yarn: Near-Field optical studies of self-assembled, flexible fluorescent fibers

1996 ◽  
Vol 54 ◽  
pp. 202-203
Author(s):  
D. A. Higgins ◽  
J. Kerimo ◽  
D. A. Vanden Bout ◽  
P. F. Barbara
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Near Field ◽  
Spectral Characteristics ◽  
Van Der Waals Interactions ◽  
Cross Linking ◽  
Aqueous Mixtures ◽  
Scanning Optical Microscopy ◽  
Gel Forming Ability

The formation of flexible molecular fibers via the solution-phase self-assembly of the pseudoisocyanine dye (PIC) 1,1’-diethyl-2,2’-cyanine and poly(vinyl sulfate) (PVS) is reported. The physical and electronic properties of these fibers spin coated into thin films on fused-quartz substrates are studied by fluorescence and topographic imaging with near-field scanning optical microscopy (NSOM) and also by atomic force microscopy (AFM). The scanned-probe images demonstrate that fibers with lengths in the hundred micron range, widths of hundreds of nanometers, and thicknesses of a few tens of nanometers, are readily formed in aqueous mixtures of PVS and PIC. Unprecedented flexibility in these fibers is exemplified by the formation of numerous curved and looped structures in the spin-coated thin films. A sandwich-like composite structure of alternating anionic PVS and cationic PIC layers is proposed as a model for the assembly of the dye and polymer in these fibers. The alternating layers in this model are held tightly together via the cooperative “cross-linking” of the PVS and PIC layers by electrostatic dye/polymer interactions, and by hydrophobic van der Waals interactions between the PIC molecules. The intermolecular interactions in the PIC layer result in the formation of a liquid-crystalline-like, well-ordered layer of the PIC, which exhibits the spectral characteristics of J-aggregates. The proposed layered structure apparently possess “reactive” surfaces which link individual fibers into a yam-like assembly. This cross-linking effect is supported by the presence of continuous circular fibers and by the gel-forming ability of the solutions from which these fibers are grown.

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