- Available Technology
Low-volume liquid collection/detection; Extracting biofluids
The artificial proboscis is fabricated using a library of electrospun polymer fibers. By controlling the time of electrospinning and revolution rate during the twisting of the fibers into yarn, biomimetic transport and mechanical properties comparable to a butterfly proboscis can be obtained. By varying the chemical composition of polymer blends and environmental conditions during electrospinning, a porosity as high as 82% can be achieved. The absorption rate of the probes is significantly increased by designing the probes to have double porosity composed of both micrometer- and nanometer pores. Depending on the application, the probe can be made ferroelectric or magnetic for remote manipulation to collect droplets. Remote bending of the probes is affected by the absorbed material, allowing the probes to act as identifiers/sensors themselves.
• Nanofibers possess ordered bands, allowing for proboscis-like fluid transport
• Porosity of the probes is adjustable, providing control over how much liquid can be absorbed and the rate of liquid uptake and wicking
• Nanofiber probes can be made ferroelectric or magnetic, enabling remote manipulation to absorb droplets
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