| 1. |
- Fornell, Anna, et al.
(författare)
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Trapping of Cell-Laden Hyaluronic Acid-Acrylamide Hydrogel Droplets using Bulk Acoustic Waves
- 2019
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Ingår i: 2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII). - : IEEE. - 9781538681046 - 9781728120072 ; , s. 2352-2355
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Konferensbidrag (refereegranskat)abstract
- In this paper an acoustofluidic system to trap hydrogel droplets is shown. The presented trapping method is label-free, biocompatible and operated in non-contact mode. The results show that the droplets can be trapped at flow rates up to 76 mu L/min which corresponds to an average flow speed of 3.2 mm/s. Moreover, it is shown that the droplets can be trapped for several hours, thus allowing for studies of the encapsulated cells over time. An application of the system is shown by performing on-chip cell nuclei staining.
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| 2. |
- Li, Shiyu, et al.
(författare)
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Nanoparticle Localization on Solid-State Nanopores Via Electrophoretic Force
- 2019
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Ingår i: 2019 20TH INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS & EUROSENSORS XXXIII (TRANSDUCERS & EUROSENSORS XXXIII). - : IEEE. - 9781728120072 ; , s. 2372-2375
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Konferensbidrag (refereegranskat)abstract
- This work presents a versatile and facile method for precise localization of nanoparticles on solid-state nanopores surface-functionalized with carbon via electron beam induced deposition (EBID). For the first time, EBID of carbon is demonstrated to enable nanoparticle localization on solid-state nanopores. To avoid non-specific adsorption of nanoparticles on the surface, an atomic layer deposited Al2O3 layer in combination with phosphonate passivation is used. By tuning the electron dose in the EBID process, the loading fraction of nanoparticles on carbon nanoarrays can be varied on similarly sized domains. Nanoparticle loading driven by electrophoresis can achieve an efficiency that is orders of magnitude higher than that driven by diffusion.
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| 3. |
- Ribet, Federico, et al.
(författare)
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Zero-Loss Optical Switch Based on Ionic Liquid Microdroplet Ewod Actuation
- 2019
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Ingår i: 2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781728120072 ; , s. 2290-2293
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Konferensbidrag (refereegranskat)abstract
- This paper reports the first optical shutter based on electrical actuation of microdroplets featuring zero insertion loss in the open state and broad-band operation. These features are achieved by electrowetting-on-dielectric (EWOD) actuation of ionic liquid microdroplets. Due to their negligible vapor pressure, ionic liquids allow the switch to robustly operate in air, unlike previously proposed systems in which the light had to cross several attenuating and refractive layers. Moreover, this solution enables operation in a much wider wavelength range, e.g. in the infrared spectrum where glass has strong absorption. Additionally, the proposed device requires lower voltage to operate (25 V) and features zero static power consumption.
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