Influence of a surfactant on single ion track etching: Preparing and manipulating cylindrical micro wires
نویسندگان
چکیده
The influence of the alkali resistant surfactant Dowfax 2A1 on single ion track etching in 30 lm polycarbonate foils is studied at low etch rate (5 M NaOH at 41.5 ± 2 C) using electro conductivity measurements. At surfactant concentrations above 10 4 vol.% breakthrough times are predictable (Dt/t < 0.25). At high surfactant concentrations (P0.1 vol.%) the formation of cylindrical channels is favoured. The shape of these channels (length P 26 lm, diameter P 1.8 lm) is verified by electro-replication and SEM observation of the resulting wires. Agreement of radii is better than 0.1 lm. Depending on the current limit set during electro replication compact or hollow cylinders can be obtained. A technique for localizing and manipulating individual micro wires by their head buds is described. 2007 Elsevier B.V. All rights reserved. PACS: 81.07. b; 61.46. w; 82.45.Yz; 82.35.Np; 61.46.Df; 68.65 k; 61.46.Fg
منابع مشابه
Fabrication of Copper and Iron Nano/Micro Structures on Semiconducting Substrate and Their Electrical Characterization
In this paper, we have studied the electrical properties of the randomly distributed metallic (Co and Fe) nano/ micro wires on Silicon substrate. Deposition was carried out potentiostatically into the pores of the track-etch polycarbonate membrane spin coated onto the Si substrate. Spin coated films were irradiated with 150MeV Ni (+11) ions at a fluence of 8E7 ions/cm2, followed by UV irradiati...
متن کاملSynthesis of segmented silver-gold nanostructures and nanogaps
By interaction of metallic nanowires (NWs) with electromagnetic radiation of appropriate wavelength, resonant surface charge density oscillations, called surface plasmons, can be excited. These oscillations are responsible for a large electromagnetic field enhancement in the NW near-field, turning the wires into promising devices for highly sensitive detection of molecules using surface enhance...
متن کاملDrag Reduction by Anionic Surfactant Solutions in Gravity Driven Flow System
This paper presents efflux time experiments performed in the absence and presence of aqueous solutions of Drag Reducing Agents (DRAs) when a liquid is emptied from a large open cylindrical storage tank through an exit piping system. The drag reducing agents studied are Dodecyl benzene sulfonate anionic surfactant and a mixed solution of surfactant and sodium chloride counter ion. The variab...
متن کاملPreparation of ion-track membranes of poly(p-phenylene terephthalamide)
There have been numerous studies on ion-track membranes of poly(ethylene terephthalate) (PET) and polycarbonate (PC), which are easily prepared by ion beam irradiation and subsequent alkaline etching. More importantly, the ion-track membranes of chemically and thermally stable polyimide (PI) and polyamide (PA), with controlled pore shape and size, may be required for the design of materials tha...
متن کاملPreparation of anisotropically proton-conductive materials based on poly(vinylidene fluoride) ion track membranes
Proton exchange membranes (PEMs) for polymer electrolyte fuel cells (PEFCs) have recently been developed by our original techniques of the γ-ray or electron-beam crosslinking and graft polymerization. Our additional main focus is the use of cylindrical damage in polymers produced by bombardment of high-energy ions, that is called a latent track. We are taking the approach using this ion track t...
متن کامل