Qiu, Yinghua ; Hinkle, Preston ; Yang, Crystal ; Bakker, Henriette E. ; Schiel, Matthew ; Wang, Hong ; Melnikov, Dmitriy ; Gracheva, Maria ; Toimil-Molares, Maria Eugenia ; Imhof, Arnout ; Siwy, Zuzanna S. (2015)
Pores with longitudinal irregularities distinguish objects by shape.
In: ACS Nano, 9 (4)
doi: 10.1021/acsnano.5b00877
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The resistive-pulse technique has been used to detect and size objects which pass through a single pore. The amplitude of the ion current change observed when a particle is in the pore is correlated with the particle volume. Up to date, however, the resistive-pulse approach has not been able to distinguish between objects of similar volume but different shapes. In this manuscript, we propose using pores with longitudinal irregularities as a sensitive tool capable of distinguishing spherical and rod-shaped particles with different lengths. The ion current modulations within resulting resistive pulses carry information on the length of passing objects. The performed experiments also indicate the rods rotate while translocating, and displace an effective volume that is larger than their geometrical volume, and which also depends on the pore diameter.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Qiu, Yinghua ; Hinkle, Preston ; Yang, Crystal ; Bakker, Henriette E. ; Schiel, Matthew ; Wang, Hong ; Melnikov, Dmitriy ; Gracheva, Maria ; Toimil-Molares, Maria Eugenia ; Imhof, Arnout ; Siwy, Zuzanna S. |
| Art des Eintrags: | Bibliographie |
| Titel: | Pores with longitudinal irregularities distinguish objects by shape |
| Sprache: | Englisch |
| Publikationsjahr: | 18 März 2015 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ACS Nano |
| Jahrgang/Volume einer Zeitschrift: | 9 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1021/acsnano.5b00877 |
| Kurzbeschreibung (Abstract): | The resistive-pulse technique has been used to detect and size objects which pass through a single pore. The amplitude of the ion current change observed when a particle is in the pore is correlated with the particle volume. Up to date, however, the resistive-pulse approach has not been able to distinguish between objects of similar volume but different shapes. In this manuscript, we propose using pores with longitudinal irregularities as a sensitive tool capable of distinguishing spherical and rod-shaped particles with different lengths. The ion current modulations within resulting resistive pulses carry information on the length of passing objects. The performed experiments also indicate the rods rotate while translocating, and displace an effective volume that is larger than their geometrical volume, and which also depends on the pore diameter. |
| Freie Schlagworte: | resistive-pulse, pore, rod, rotation, excluded volume, electroosmosis |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 14 Mär 2024 11:14 |
| Letzte Änderung: | 14 Mär 2024 11:14 |
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