9 papers
Time-Resolved Stress Analysis of Tissue Simulants During Needle-Free Jet Injection
Kohei Yamagata, Prasad Sonar, Kazuhiro Terai +2
Needle-free jet injection generates transient internal stress fields that can influence tissue deformation, pain-related stimulation, and cellular-level mechanical responses. Howev…
Flow birefringence measurement in a radial Hele-Shaw cell considering three-dimensional effects
Misa Kawaguchi, William Kai Alexander Worby, Yuto Yokoyama +3
Flow birefringence measurement is an emerging technique for visualizing stress fields in fluid flows. This study investigates flow birefringence in the steady radial Hele-Shaw flow…
Flow-history-dependent orientational relaxation in dilute polydisperse colloidal rod suspensions
Yuto Yokoyama, Vincenzo Calabrese, Fabian Hillebrand +3
Orientation and relaxation dynamics of rod-like colloids under flow govern the optical and mechanical properties of many emerging soft materials. In polydisperse suspensions, parti…
Penetration of impact-induced jets into skin-simulating materials
Kohei Yamagata, Yuto Yokoyama, Shoto Sekiguchi +3
This study compares the penetration characteristics of impact-induced jets with those of laser-induced jets, focusing on the underlying penetration mechanism rather than device per…
Interfacial dynamics induced by impacts across rigid and soft substrates
Ishin Kikuchi, Hiroya Watanabe, Yuto Yokoyama +2
We investigate impact-induced gas-liquid interfacial dynamics through experiments in which a liquid-filled container impacts substrates with elastic moduli from MPa to…
Extending flow birefringence analysis to combined extensional-shear flows via Jeffery-Hamel flow measurements
Miu Kobayashi, William Kai Alexander Worby, Misa Kawaguchi +3
This study investigates the relationship between phase retardation and strain rates in combined extensional-shear flows using the Jeffery-Hamel flow formalism, which yields an anal…