27 citations · 71 across the 9 of their papers we have counts for
9 papers
Configurable Vibrational Coupling in Laser-Induced Microsecond Oscillations of Multi-Microbubble System
Xuanwei Zhang, Ryu Matsuo, Jun Nishida +2
We study the coupled vibrational dynamics of sub-MHz self-oscillating bubbles at separations of 14 to 92 μm. Two vapor-rich microbubbles are generated via photothermal heating; the…
Stabilization of vapor-rich bubble in ethanol/water mixtures and enhanced flow around the bubble
Mizuki Kato, Kyoko Namura, Shinya Kawai +3
This study investigates the behavior of microbubbles generated by the local heating of an ethanol/water mixture and the surrounding flow. The mixture is photothermally heated by fo…
Microbubble Oscillation on Localized Heat Source Affected by Dissolved Gases in Water
Nao Hiroshige, Shunsuke Okai, Xuanwei Zhang +3
Recently, we demonstrated that the local heating of degassed water can generate water vapor microbubbles and induce a rapid flow around the bubble. Although flow generation involve…
Effects of Marangoni and drag forces on the transition from vapor-rich to air-rich bubbles
Kyoko Namura, Takuya Iwasaki, Kaoru Nakajima +1
In this study, we investigated the formation of air-rich microbubbles through local photothermal heating of non-degassed water. When non-degassed water is locally heated, vapor-ric…
Highly Stable and Reproducible Au Nanorod Arrays for Near-Infrared Optofluidic SERS sensor
Samir Kumar, Takao Fukuoka, Kyoko Namura +1
Surface-enhanced Raman spectroscopy (SERS) is a sensitive vibrational spectroscopy technique that can enable fast and non-destructive detection of trace molecules. SERS substrates…
Multilayer Thin-Film Flake Dispersion Gel for Surface-Enhanced Raman Spectroscopy
Samir Kumar, Misa Kanagawa, Kyoko Namura +2
Ag nanorod arrays/dielectrics/mirror-structured multilayer thin-film are well known, highly sensitive surface-enhanced Raman scattering (SERS) substrates that enhance the Raman sca…
Highly reproducible, large scale inkjet-printed Ag nanoparticles-ink SERS substrate
Samir Kumar, Kyoko Namura, Daisuke Kumaki +2
We report the fabrication of a low cost, and highly reproducible large scale surface-enhanced Raman spectroscopy substrate using an inkjet-printed Ag nanoparticle ink (AgNI). The A…
Water Droplet Bouncing on a non-Superhydrophobic Si Nanosprings
Samir Kumar, Kyoko Namura, Motofumi Suzuki +1
Self-cleaning surfaces often make use of superhydrophobic coatings that repel water. Here, we report a hydrophobic Si nanospring surface, that effectively suppresses wetting by rep…
Plasmonic Nanoslit Arrays Fabricated by Serial Bideposition: Optical and Surface-Enhanced Raman Scattering Study
Samir Kumar, Yusuke Doi, Kyoko Namura +1
Recently, studies have been carried out on attempts to combine surface-enhanced Surface-enhanced Raman spectroscopy (SERS) substrates that can be based on either localized surface…