Multi-component olfactory display with a SAW atomizer and micropumps controlled by a tablet PC

Nakamoto, Takamichi; Hashimoto, Katsushi; Aizawa, Tomoyuki; Ariyakul, Yossiri

doi:10.1109/fcs.2014.6859845

Cited by 13 publications

(8 citation statements)

References 7 publications

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“…1,2 Since then, this phenomenon has been investigated in various scientific publications, regarding the underlying physical phenomena [3][4][5] or possible applications, including inhalation therapy, 6-8 olfactory displays, [9][10][11] micro-and nanoparticle synthesis, [12][13][14][15][16][17][18] thin film deposition 19,20 and mass spectroscopy of non-volatile fluids. 1,2 Since then, this phenomenon has been investigated in various scientific publications, regarding the underlying physical phenomena [3][4][5] or possible applications, including inhalation therapy, 6-8 olfactory displays, [9][10][11] micro-and nanoparticle synthesis, [12][13][14][15][16][17][18] thin film deposition 19,20 and mass spectroscopy of non-volatile fluids.…”

Section: Introductionmentioning

confidence: 99%

SAW-based fluid atomization using mass-producible chip devices

et al. 2015

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Surface acoustic wave (SAW)-based fluid atomizers are ideally suited to generate micrometer-sized droplets without any moving parts or nozzles. Versatile application fields can be found for instance in biomedical, aerosol or thin film technology, including medical inhalators or particle deposition for advanced surface treatment. Such atomizers also show great potential for on-chip integration and can lead to economic production of hand-held and even disposable devices, with either a single functionality or integrated in more complex superior systems. However, this potential was limited in the past by fluid supply mechanisms inadequate for mass production, accuracy and reliability. In this work, we briefly discuss existing fluid supply methods and demonstrate a straightforward new approach suited for reliable and cost-effective mass-scale manufacturing of SAW atomizer chips. Our approach is based on a fluid supply at the boundary of the acoustic beam via SU-8 microchannels produced by a novel one-layer/double-exposure photolithography method. Using this technique, we demonstrate precise and stable fluid atomization with almost ideal aerosol plume geometry from a dynamically stabilized thin fluid film. Additionally, we demonstrate the possibility of in situ altering the droplet size distribution by controlling the amount of fluid available in the active region of the chip.

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Section: Introductionmentioning

confidence: 99%

SAW-based fluid atomization using mass-producible chip devices

et al. 2015

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“…Moreover, the advances in microsystem technologies enabled obtaining information about sample composition even in impassable, space-constrained environments. For instance, surface acoustic wave (SAW)-based aerosol generators producing micrometer-sized droplets are demonstrated to act as the key component in a wide array of applications including inhalation therapy 1,2 , material deposition [3][4][5] , liquid chromatography/mass spectrometry (LC/ MS) [6][7][8] and olfactory displays 9 . They operate based on the interaction of an acoustic wave excited on the surface of a piezoelectric substrate with a liquid placed in its propagation path.…”

mentioning

confidence: 99%

Surface acoustic wave nebulization improves compound selectivity of low-temperature plasma ionization for mass spectrometry

Kiontke

Roudini

Billig

et al. 2021

Sci Rep

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Mass spectrometry coupled to low-temperature plasma ionization (LTPI) allows for immediate and easy analysis of compounds from the surface of a sample at ambient conditions. The efficiency of this process, however, strongly depends on the successful desorption of the analyte from the surface to the gas phase. Whilst conventional sample heating can improve analyte desorption, heating is not desirable with respect to the stability of thermally labile analytes. In this study using aromatic amines as model compounds, we demonstrate that (1) surface acoustic wave nebulization (SAWN) can significantly improve compound desorption for LTPI without heating the sample. Furthermore, (2) SAWN-assisted LTPI shows a response enhancement up to a factor of 8 for polar compounds such as aminophenols and phenylenediamines suggesting a paradigm shift in the ionization mechanism. Additional assets of the new technique demonstrated here are (3) a reduced analyte selectivity (the interquartile range of the response decreased by a factor of 7)—a significant benefit in non-targeted analysis of complex samples—and (4) the possibility for automated online monitoring using an autosampler. Finally, (5) the small size of the microfluidic SAWN-chip enables the implementation of the method into miniaturized, mobile LTPI probes.

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“…Although the olfactory display size in Figure 7.18 does not include peripheral circuits, miniaturized olfactory display including the circuits was developed in 2014 [34]. It is expected to be applied to a variety of fields.…”

Section: Micropumps and Surface Acoustic Wave Atomizermentioning

confidence: 99%

“…It might be replaced with the latest one made up of micropumps and a SAW atomizer [34]. It might be replaced with the latest one made up of micropumps and a SAW atomizer [34].…”

Section: Implementation Of Teleolfaction Systemmentioning

confidence: 99%