Optimal Control of Colloidal Trajectories in Inertial Microfluidics Using the Saffman Effect
dc.contributor.author | Rühle, Felix | |
dc.contributor.author | Schaaf, Christian | |
dc.contributor.author | Stark, Holger | |
dc.date.accessioned | 2020-11-19T10:25:26Z | |
dc.date.available | 2020-11-19T10:25:26Z | |
dc.date.issued | 2020-06-15 | |
dc.date.updated | 2020-07-12T09:10:18Z | |
dc.description.abstract | In inertial microfluidics colloidal particles in a Poiseuille flow experience the Segré-Silberberg lift force, which drives them to specific positions in the channel cross section. An external force applied along the microchannel induces a cross-streamline migration to a new equilibrium position because of the Saffman effect. We apply optimal control theory to design the time protocol of the axial control force in order to steer a single particle as precisely as possible from a channel inlet to an outlet at a chosen target position. We discuss the influence of particle radius and channel length and show that optimal steering is cheaper than using a constant control force. Using a single optimized control-force protocol, we demonstrate that even a pulse of particles spread along the channel axis can be steered to a target and that particles of different radii can be separarted most efficiently. | en |
dc.description.sponsorship | TU Berlin, Open-Access-Mittel – 2020 | en |
dc.description.sponsorship | DFG, 237143019, SPP 1726: Mikroschwimmer - Von Einzelpartikelbewegung zu kollektivem Verhalten | en |
dc.description.sponsorship | DFG, 163436311, SFB 910: Kontrolle selbstorganisierender nichtlinearer Systeme: Theoretische Methoden und Anwendungskonzepte | en |
dc.identifier.eissn | 2072-666X | |
dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/12034 | |
dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-10914 | |
dc.language.iso | en | en |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en |
dc.subject.ddc | 530 Physik | de |
dc.subject.other | inertial microfluidics | en |
dc.subject.other | optimal control | en |
dc.subject.other | Saffman effect | en |
dc.title | Optimal Control of Colloidal Trajectories in Inertial Microfluidics Using the Saffman Effect | en |
dc.type | Article | en |
dc.type.version | publishedVersion | en |
dcterms.bibliographicCitation.articlenumber | 592 | en |
dcterms.bibliographicCitation.doi | 10.3390/mi11060592 | en |
dcterms.bibliographicCitation.issue | 6 | en |
dcterms.bibliographicCitation.journaltitle | Micromachines | en |
dcterms.bibliographicCitation.originalpublishername | MDPI | en |
dcterms.bibliographicCitation.originalpublisherplace | Basel | en |
dcterms.bibliographicCitation.volume | 11 | en |
tub.accessrights.dnb | free | en |
tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Theoretische Physik::FG Statistische Physik weicher Materie und biologischer Systeme | de |
tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
tub.affiliation.group | FG Statistische Physik weicher Materie und biologischer Systeme | de |
tub.affiliation.institute | Inst. Theoretische Physik | de |
tub.publisher.universityorinstitution | Technische Universität Berlin | en |