Selective trapping of oligos to triangular gold nanoparticles utilizing dielectrophoresis
Triangular shaped particles are an interesting research topic since there are three plasmonically active tips, which can be utilized in new molecular sensing application systems. In this research we used dielectrophoretic force to trap thiol-modified (5’- end) and Cy3-dye-labeled (3’-end) single-stranded DNA (ssDNA) oligonucleotides, size 40 nt (about 22 nm long), to the corners of the gold triangles. These gold triangles were 20 nm thick and side length was 1 μm. The trapping experiment was done under AC-circuit and the gathering of the oligos to the triangles was studied in situ under confocal microscope. The theoretical values for dielectrophoretic force with different voltages were simulated with finite element method. Experimentally the required DEP-force was achieved by using about 40 Vpp voltage and in the simulation system with 34 Vpp. Most of the oligos formed “cloud” around the triangle and few of them trapped also on the corners. This “cloud” can be seen also in simulations, where the gathering of the oligos was modeled. At least, our research prove that gold triangles can be used for trapping biomolecules and hence also to sensing and detecting them. ...
MetadataShow full item record
- Pro gradu -tutkielmat 
Showing items with similar title or keywords.
Hyppönen, Viivi (2014)Tutkin nanokokoisten timanttien asettumista kasvatusalustan pinnalle timanttiohutkalvojen valmistusta varten. Tutkielma esittelee nanotimanttien historiaa ja käyttökohteita kokeellisen osion ohella. Kokeiden aluksi kaupallista ...
Borovský, Ján (University of Jyväskylä, 2018)Sorting of carbon nanotubes by their chirality is the current bottleneck in the way to their broad employment based on their exceptional electronic and optical properties. Despite the extensive effort, there is no known ...
Linko, Veikko (University of Jyväskylä, 2011)This thesis is mainly focused on DNA molecules and especially on self-assembled DNA constructs and their potential applications in nanotechnology and molecular electronics. In the field of molecular electronics the ...
Laucht, Arne; Hohls, Frank; Ubbelohde, Niels; Gonzalez-Zalba, M. Fernando; Reilly, David J.; Stobbe, Søren; Schröder, Tim; Scarlino, Pasquale; Koski, Jonne V.; Dzurak, Andrew; Yang, Chih-Hwan; Yoneda, Jun; Kuemmeth, Ferdinand; Bluhm, Hendrik; Pla, Jarryd; Hill, Charles; Salfi, Joe; Oiwa, Akira; Muhonen, Juha T.; Verhagen, Ewold; LaHaye, M. D.; Kim, Hyun Ho; Tsen, Adam W.; Culcer, Dimitrie; Geresdi, Attila; Mol, Jan A.; Mohan, Varun; Jain, Prashant K.; Baugh, Jonathan (Institute of Physics, 2021)Quantum phenomena are typically observable at length and time scales smaller than those of our everyday experience, often involving individual particles or excitations. The past few decades have seen a revolution in the ...
Tolkki, Dan (2019)Tämä kirjallisuuskatsaus pyrkii luomaan laajahkon perustepohjan grafeenimateriaaleista ja näiden funktionalisoimisesta proteiineilla ja tietyillä muilla biomolekyyleillä. Erityistä huomiota on kiinnitetty erilaisten ...