Influence of Nanoparticle Coating on the Differential Magnetometry and Wireless Actuation of Biohybrid Microrobots

Veronika Magdanz, Jack R. Cumming, Sadaf Salamzadeh, Sven Tesselaar, Lejla Alic, Leon Abelmann, Islam S.M. Khalil

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)
19 Downloads (Pure)

Abstract

Magnetic nanoparticles can be electrostatically assembledaroundspermcells toformbiohybridmicrorobots. Thesebiohybridmicrorobots possess sufficientmagneticmaterial to potentially allow for pulse-echo localization and wireless actuation.Alternatively,magnetic excitationof these nanoparticlescanbeusedfor localizationbasedonFaraday’s lawof inductionusingadetectioncoil.Here, we investigate the influenceof theelectrostaticattractionbetweenpositively chargednanoparticles andnegativelychargedspermcells on theactivationofthenanoparticlesduringnonlineardifferential magnetometryandwirelessmagneticactuation.Activationof clustersof freenanoparticlesandnanoparticlesboundto the bodyof spermcells is achievedbyacombinationof ahighfrequency alternating field and a pulsating static field. The nonlinear response inboth cases indicates that constraining thenanoparticles is likelytoyieldsignificantdecreases inthe magnetometrysensitivity.Whiletheattachmentofparticles to thecellsenableswirelessactuation(rollinglocomotion),therate of changeof themagnetizationof thenanoparticlesdecreases oneorderofmagnitudecomparedtofreenanoparticles.
Original languageEnglish
Title of host publication2023 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages2653-2658
Number of pages6
ISBN (Electronic)978-1-6654-9190-7
DOIs
Publication statusPublished - 13 Dec 2023
EventIEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) - Detroit, United States
Duration: 1 Oct 20235 Oct 2023

Conference

ConferenceIEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Abbreviated titleIROS
Country/TerritoryUnited States
CityDetroit
Period1/10/235/10/23

Keywords

  • 2023 OA procedure

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