Strong, Long, Electrically Conductive and Insulated Coaxial Nanocables

Aydin, Aykut; Sun, Lu; Gong, Xian; Russell, Kasey J.; Carter, David J. D.; Gordon, Roy G.

doi:10.1021/acsapm.9b00286

Cited by 4 publications

(3 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cross-section morphology control of nanofibers, e.g., fabrication of core-shell type or multilayered nanofiber which can be utilized for a variety of applications, has been an attractive but challenging issue [ 88 , 89 , 90 ]. Recently, an interesting facile fabrication approach for multilayered nanofiber was demonstrated by Aydin et al [ 91 ]. They fabricated strong, flexible, and centimeter- long nanowires through multiple metal depositions on a polymeric nanofiber, as shown in Figure 10 .…”

Section: Structural and Architectural Regulationsmentioning

confidence: 99%

Recent Advances on Nanofiber Fabrications: Unconventional State-of-the-Art Spinning Techniques

2020

View full text Add to dashboard Cite

In this review, we describe recent relevant advances in the fabrication of polymeric nanofibers to address challenges in conventional approaches such as electrospinning, namely low throughput and productivity with low size uniformity, assembly with a regulated structure and even architecture, and location with desired alignments and orientations. The efforts discussed have mainly been devoted to realize novel apparatus designed to resolve individual issues that have arisen, i.e., eliminating ejection tips of spinnerets in a simple electrospinning system by effective control of an applied electric field and by using mechanical force, introducing a uniquely designed spinning apparatus including a solution ejection system and a collection system, and employing particular processes using a ferroelectric material and reactive precursors for atomic layer deposition. The impact of these advances to ultimately attain a fabrication technique to solve all the issues simultaneously is highlighted with regard to manufacturing high-quality nanofibers with high- throughput and eventually, practically implementing the nanofibers in cutting-edge applications on an industrial scale.

show abstract

Section: Structural and Architectural Regulationsmentioning

confidence: 99%

Recent Advances on Nanofiber Fabrications: Unconventional State-of-the-Art Spinning Techniques

2020

View full text Add to dashboard Cite

show abstract

“…As one of the most important high-performance polymers, aromatic polyamides (aramids) have been widely applied in modern industrial and commercial applications due to their excellent comprehensive properties. − For instance, poly( p -phenylene terephthalamide) (known as Kevlar by DuPont company) and poly( m -phenylene isophthalamide) (Nomex) can be prepared by wet spinning into heat-stable, cut-resistant, and high-tensile-strength synthetic fibers as advantageous replacements for metals or ceramics in aerospace and armament industry. Architecturally, the wholly aromatic structures endow polyamides with high glass-transition temperature ( T g ), melting temperature ( T m ), modulus, and strength due to their chain rigidity derived from the aromatic character of the polymer backbone and intermolecular hydrogen bonds that arose from the amido groups.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Pendent Groups of Semiaromatic Polyamides toward High Performance

et al. 2020

View full text Add to dashboard Cite

The construction of novel semiaromatic polyamides (SaPAs) combining all advantages of aliphatic and aromatic polyamides is of particular importance in both academia and industrial circles. To study the effect of different pendent groups on the comprehensive properties of SaPAs, three kinds of SaPAs with different pendent groups were designed and prepared by the aromatic nucleophilic substitution polycondensation, named as P-PAH (dimethyl-), P-PEPH (methylphenyl-), and P-DPMPH (diphenyl-). All of these polyamides exhibited a relatively high molecular weight with narrow molecular weight distribution. It was found that the chain conformation of P-PEPH was significantly different from those of P-PAH and P-DPMPH due to the formation of the helical structures caused by the asymmetric methyl and phenyl pendent groups, which was testified by computational simulation. Meanwhile, SaPAs with phenyl pendent groups (P-PEPH and P-DPMPH) exhibited an interaction between molecular chains due to π–π stacking, as proved by wide-angle X-ray diffraction (WAXD) results. With an increase in the content of the phenyl pendent groups, their glass-transition temperatures (T g) increased gradually from 135.6 to 156.5 °C and the initial decomposition temperatures (T 5%) also increased. Rheological investigations and solubility tests showed that these polyamides were suitable for processing either in melt or in solution. The expected mechanical properties of P-PEPH were also obtained due to the unique chain conformation and π–π stacking. Taking these advantages, this kind of novel SaPAs exhibited potential availability in versatile applications.

show abstract

“…However, in general, torsion-induced helical buckling has historically been classified as a mode of "failure," for instance, in industrial applications such as breaking tubes during well drilling [8,9]. Similarly, high-aspect ratio wires formed from electrospun nanofibers of submicron diameter and centimeter-scale lengths coated with metal [10] can undergo torsion-induced failure when being twisted to synthesize micron-scale litz wire [11].…”

mentioning

confidence: 99%

Twirling, whirling, and tensioning: Plectoneme formation and suppression in flexible filaments

Bruss

Mutha

Stoll

et al. 2019

Phys. Rev. Research

Self Cite

View full text Add to dashboard Cite

A high-aspect ratio flexible filament suspended in a viscous fluid is unstable to a symmetry-breaking whirling motion when axially rotated beyond a critical velocity. We present experiments of this behavior and uncover a rich diversity of plectoneme formation soon after the initial instability, including multiple plectonemes for especially long filaments. A physical model extending Timoshenko's theory of elastic instability is presented which captures the fundamental physics involved in the instability. Additionally, we consider the effects of an axial flow that acts to tension the filament and control the onset of whirling without adjusting the physical properties of the filament itself. Such a setup could be employed to selectively engineer plectoneme formation at specified locations and lengths, and in fibers with submicron diameters, potentially to create superelastic ropes and fabrics.

show abstract

Strong, Long, Electrically Conductive and Insulated Coaxial Nanocables

Cited by 4 publications

References 56 publications

Recent Advances on Nanofiber Fabrications: Unconventional State-of-the-Art Spinning Techniques

Recent Advances on Nanofiber Fabrications: Unconventional State-of-the-Art Spinning Techniques

Tuning the Pendent Groups of Semiaromatic Polyamides toward High Performance

Twirling, whirling, and tensioning: Plectoneme formation and suppression in flexible filaments

Contact Info

Product

Resources

About