35 citations · 35 across the 2 of their papers we have counts for
5 papers
Gradient-index granular crystals: From boomerang motion to asymmetric transmission of waves
Eunho Kim, Rajesh Chaunsali, Jinkyu Yang
We present a gradient-index crystal that offers extreme tunability in terms of manipulating the propagation of elastic waves. For small-amplitude excitations, we achieve control ov…
Bloch oscillation of elastic waves in the graded lattice of 3D-printed hollow elliptical cylinders
Hyunryung Kim, Xiaotian Shi, Eunho Kim +1
We study the Bloch oscillation of elastic waves in a chain composed of hollow elliptical cylinders (HECs). These HECs are 3D-printed in different wall thicknesses and are arranged…
Nonlinear Wave Propagation in 3D-Printed Graded Lattices of Hollow Elliptical Cylinders
Hyunryung Kim, Eunho Kim, Jinkyu Yang
We propose a 3D-printed graded lattice made of hollow elliptical cylinders (HECs) as a new way to design impact mitigation systems. We observe asymmetric dynamics in the graded HEC…
Extreme control of impulse transmission by cylinder-based nonlinear phononic crystals
Rajesh Chaunsali, Matthew Toles, Jinkyu Yang +1
We present a novel device that can offer two extremes of elastic wave propagation --- nearly complete transmission and strong attenuation under impulse excitation. The mechanism of…
A comparison study of ridge filter parameter using FLUKA and GEANT4 simulation code
Yongkeun Song, Jaeik Shin, Sungho Cho +6
We investigated the parameter optimization of ridge filter thickness using a Monte Carlo simulation for carbon ion therapy. For this study, a ridge filter was designed for the Spre…