Fabrication of a nickel nanowire mesh electrode suspended on polymer substrate

Abstract

We report on an efficient strategy for the fabrication of an ultra-long suspended nanowire mesh suitable for nanodevice architectures on a polymer surface. First, nickel nanowires are synthesized directly on a template substrate by magnetron sputtering. Laser interference lithography followed by deep reactive ion etching is used to create the nanograted template substrate constituted of one-dimensional line pattern arrays of 240 nm in periodicity. Ordered alignment of ultra-long nanowires (∼180 nm in diameter) with high fidelity to the template pattern is observed by scanning electron microscopy. The transfer of the pre-defined parallel nanowire array from the template surface to a target polymer substrate for electrical characterization of the system is demonstrated. The electrical behaviour of the nanowire mesh, suspended between two electrodes, was found to be linear, stable, and reproducible. This result suggests that this nanofabrication process will open an efficient way to the design and construction of novel nanodevices.

Highly ordered ultralong magnetic nanowires wrapped in stacked graphene layers

“…The nanowires have a homogenous morphology with a mean diameter of ≈145 nm (corresponding to the width of the grates) and a length up to 1 cm (corresponding to the size of the substrate). The preferential growth of nickel on the top surface of the grating structures can be mainly attributed to the following mechanisms: (i) the low directionality of the deposition process; (ii) the low width of the nanotrench separating two subsequent nanogrates; and (iii) the high depth-to-width ratio of the trenches (here, typically 12) [25,28]. …”

“…In a previous study, we demonstrated the possibility to synthesize an array of aligned Ni nanowires on a patterned silicon surface [25]. In this letter we present a simple and efficient method to prepare an array of highly ordered coaxial nickel/graphene-stacks core–shell nanowires with a length up to 1 cm.…”

Highly Hydrophobic Coatings from Waterborne Latexes

“…The most hydrophobic polymers (fluoropolymers, silicones) have a contact angle on flat surfaces that is rarely higher than 110°. , The contact angle increases with the roughness of the surface. , Therefore, plenty of work has been devoted to increase the roughness of the surfaces by using lithography, − templating techniques, − induced phase separation, − crystal growth, − and etching. − However, these techniques are difficult to apply to large and complex surfaces.…”

Image analysis for measuring rod network properties

“…The performance of multifunctional films with nanomaterials such as transparent conductive film (TCF) [1,2] and molecular sieve separation membrane [3,4] can be expressed in terms of macroscopic properties such as electrical, optical, and mechanical characteristics in the field of materials processing for the fabrication and production. Although proper instruments, e.g.…”