Soft electrostatic trapping in nanofluidics
Abstract: Trapping and manipulation of nano-objects in solution are of great interest and have emerged in a plethora of fields spanning from soft condensed matter to biophysics and medical diagnostics. We report on establishing a nanofluidic system for reliable and contact-free trapping as well as manipulation of charged nano-objects using elastic polydimethylsiloxane (PDMS)-based materials. This trapping principle is based on electrostatic repulsion between charged nanofluidic walls and confined charged objects, called geometry-induced electrostatic (GIE) trapping. With gold nanoparticles as probes, we study the performance of the devices by measuring the stiffness and potential depths of the implemented traps, and compare the results with numerical simulations. When trapping 100 nm particles, we observe potential depths of up to Q≅24 k B T that provide stable trapping for many days. Taking advantage of the soft material properties of PDMS, we actively tune the trapping strength and potential depth by elastically reducing the device channel height, which boosts the potential depth up to Q~200 k B T, providing practically permanent contact-free trapping. Due to a high-throughput and low-cost fabrication process, ease of use, and excellent trapping performance, our method provides a reliable platform for research and applications in study and manipulation of single nano-objects in fluids
- Standort
-
Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
-
Online-Ressource
- Sprache
-
Englisch
- Anmerkungen
-
Microsystems & nanoengineering. - 3 (2017) , 17051, ISSN: 2055-7434
- Ereignis
-
Veröffentlichung
- (wo)
-
Freiburg
- (wer)
-
Universität
- (wann)
-
2019
- Urheber
- Beteiligte Personen und Organisationen
-
Experimentelle Polymerphysik
- DOI
-
10.1038/micronano.2017.51
- URN
-
urn:nbn:de:bsz:25-freidok-1434749
- Rechteinformation
-
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
-
25.03.2025, 13:42 MEZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Gerspach, Michael Adrian
- Mojarad, Nassir
- Sharma, Deepika
- Pfohl, Thomas
- Ekinci, Yasin
- Experimentelle Polymerphysik
- Universität
Entstanden
- 2019
Ähnliche Objekte (12)
Electrostatic Trapping and Anomalous Diffusion of Gold Nanoparticles
Electrostatic effects in soft matter
Trapping fermionic potassium atoms in a quasi-electrostatic optical dipole potential
Trapping fermionic potassium atoms in a quasi-electrostatic optical dipole potential
Optical trapping of ion Coulomb crystals
Shaping soft robotic microactuators by wire electrical discharge grinding
Electrostatic trapping as a self-consistent phenomenon in plasmas and other collective systems
Controlled trapping and release of droplets through dynamically reconfigurable surfaces
Morphological control of cilia-inspired asymmetric movements using nonlinear soft inflatable actuators
Trapping ion coulomb crystals in an optical lattice
Soft robotics for infrastructure protection
Electrostatic treatment of charged interfaces in classical atomistic simulations
Electrostatic Trapping and Anomalous Diffusion of Gold Nanoparticles
Electrostatic effects in soft matter
Trapping fermionic potassium atoms in a quasi-electrostatic optical dipole potential
Trapping fermionic potassium atoms in a quasi-electrostatic optical dipole potential
Optical trapping of ion Coulomb crystals
Shaping soft robotic microactuators by wire electrical discharge grinding
Electrostatic trapping as a self-consistent phenomenon in plasmas and other collective systems
Controlled trapping and release of droplets through dynamically reconfigurable surfaces
Morphological control of cilia-inspired asymmetric movements using nonlinear soft inflatable actuators
Trapping ion coulomb crystals in an optical lattice
Soft robotics for infrastructure protection
Electrostatic treatment of charged interfaces in classical atomistic simulations
Electrostatic Trapping and Anomalous Diffusion of Gold Nanoparticles
Electrostatic effects in soft matter
Trapping fermionic potassium atoms in a quasi-electrostatic optical dipole potential
Trapping fermionic potassium atoms in a quasi-electrostatic optical dipole potential
Optical trapping of ion Coulomb crystals
Shaping soft robotic microactuators by wire electrical discharge grinding
Electrostatic trapping as a self-consistent phenomenon in plasmas and other collective systems
Controlled trapping and release of droplets through dynamically reconfigurable surfaces
Morphological control of cilia-inspired asymmetric movements using nonlinear soft inflatable actuators
Trapping ion coulomb crystals in an optical lattice
Soft robotics for infrastructure protection