Microvials with tungsten nanowire arrays

Drensler, Stefanie; Milenković, Srdjan; Hassel, Achim Walter

doi:10.1007/s10008-014-2528-6

Cited by 2 publications

(2 citation statements)

References 33 publications

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“…Unlike in the traditional case, the deposition happens in a container filled with electrolyte. Drensler et al [ 22 ] proposed a method to use scanning droplet cell to selectively dissolve NiAl matrix and release the embedded W nanowires, which is intended for the application of self-assembly. Hu et al [ 23 ] also proposed a gushing and sucking method with a coaxial tube to achieve the groove width of 103 µm and the surface roughness of 0.012–0.025 µm.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Mesoscale Channel by Scanning Micro Electrochemical Flow Cell (SMEFC)

2017

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A unique micro electrochemical machining (ECM) method based on a scanning micro electrochemical flow cell (SMEFC), in which the electrolyte is confined beneath the tool electrode instead of spreading on the workpiece surface, has been developed and its feasibility for fabricating mesoscale channels has been investigated. The effects of the surface conditions, the applied current, the feed rate, the concentration of the electrolyte and several geometrical parameters on the machining performance have been investigated through a series of experiments. The cross-sectional profile of the channels, the roughness of the channel bottom, the width and depth of the channel, the microstructures on the machined surface and the morphologies of the moving droplet have been analyzed and compared under different machining conditions. Furthermore, experiments with different overlaps of the electrolyte droplet traces have also been conducted, in which the SMEFC acts as a “milling tool”. The influences of the electrode offset distance (EOD), the current and the feed rate on the machining performance have also been examined through the comparison of the corresponding cross-sectional profiles and microstructures. The results indicate that, in addition to machining individual channels, the SMEFC system is also capable of generating shallow cavities with a suitable superimposed motion of the tool electrode.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Mesoscale Channel by Scanning Micro Electrochemical Flow Cell (SMEFC)

2017

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“…Another method of fabricating a solid state μ-reference electrode was shown by Nolan et al [5] by dip-coating a Ag|AgCl wire in poly(vinyl chloride) containing immobilized NaCl electrolyte and protecting the electrodes with polyurethane or Nafion. Various studies focus on the optimization, miniaturization, and adaptation to specific requirements of the Ag|AgCl reference electrode [6][7][8][9][10][11], due to its nature as an electrode of Gabriela Schimo and Carina Daniela Grill contributed equally to this work.…”

Section: Introductionmentioning

confidence: 99%

Hydrogel-based flexible micro-reference electrodes for use in alkaline and neutral pH solutions

Schimo

Grill

Kollender

et al. 2016

J Solid State Electrochem

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Two types of nonbreakable, flexible microreference electrodes filled with gel-electrolytes were prepared for use in solutions with alkaline and neutral pH. The electrodes are intended for electrochemical measurements, in which chloride-free conditions are important. Due to the flexible, bendable construction of the electrodes, electrochemical experiments at locations difficult to access with common reference electrodes are enabled. Hg|HgO-type electrodes were prepared from amalgamated Au wires, followed by oxidation of the amalgam, which is mounted in a PTFE tube filled with 0.1M NaOH solution immobilized in a PAA-g-PEO gel. The potential of this type of electrode was found to be 0.162 ± 0.002 V (SHE) at room temperature. Cu|CuSO 4 electrodes, consisting of a Cu wire immersed in a saturated CuSO 4 solution jellied with gelatin, showed a stable open-circuit potential of 0.312 ± 0.001 V (SHE). Further characterization of the electrodes was performed in terms of electrochemical impedance spectroscopy and micro-polarization measurements. As an alternative to the flexible electrodes, rigid electrodes in glass enclosure were fabricated in analogy to the flexible-type electrodes.

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Microvials with tungsten nanowire arrays

Cited by 2 publications

References 33 publications

Fabrication of Mesoscale Channel by Scanning Micro Electrochemical Flow Cell (SMEFC)

Fabrication of Mesoscale Channel by Scanning Micro Electrochemical Flow Cell (SMEFC)

Hydrogel-based flexible micro-reference electrodes for use in alkaline and neutral pH solutions

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