title: Laser-Assisted Detection of Metal Nanoparticles in Liquid He-II.
abstract: The formation of gas bubbles surrounding laser heated copper nanoparticles in superfluid helium at 1.7 K is observed. Because of the effective light capture by these plasmonic particles and the subsequent heat transfer into the liquid, such bubbles grow within 3 μs to tens of micrometers in size. The Schlieren imaging technique is used to determine the spatial distribution of the nanoparticles in the liquid, and the gas bubble radii are related to the parent nanoparticle size. The presented liquid-phase particle size analysis is validated against atomic force microscopy measurements of nanoparticles deposited from the liquid onto a solid substrate.
authors.affiliation: Los Angeles Valley College , 5800 Fulton Avenue, Valley Glen, California 91401, United States.
authors.forename: Victor
authors.initials: V
authors.lastname: Fernandez
authors.affiliation: Los Angeles Valley College , 5800 Fulton Avenue, Valley Glen, California 91401, United States.
authors.forename: Allan
authors.initials: A
authors.lastname: Garcia
authors.affiliation: Department of Chemistry and Biochemistry, California State University at Northridge , 18111 Nordhoff Street, Northridge, California 91330, United States.
authors.forename: Kaveh
authors.initials: K
authors.lastname: Vossoughian
authors.affiliation: Department of Chemistry and Biochemistry, California State University at Northridge , 18111 Nordhoff Street, Northridge, California 91330, United States.
authors.forename: Evgeny
authors.initials: E
authors.lastname: Popov
authors.affiliation: Department of Chemistry and Biochemistry, California State University at Northridge , 18111 Nordhoff Street, Northridge, California 91330, United States.
authors.forename: Simon
authors.initials: S
authors.lastname: Garrett
authors.affiliation: Department of Chemistry and Biochemistry, California State University at Northridge , 18111 Nordhoff Street, Northridge, California 91330, United States.
authors.forename: Jussi
authors.initials: J
authors.lastname: Eloranta
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods*; D003300:Copper / Q000737:chemistry; D006371:Helium / Q000737:chemistry*; D007834:Lasers; D053768:Metal Nanoparticles / Q000032:analysis* / Q000737:chemistry; D018625:Microscopy, Atomic Force
chemical_list: D006371:Helium; D003300:Copper