Cellular ceramic structures (CCSs) have promising application perspectives in various
fields. Recently, additive manufacturing (AM), usually known as three-dimensional printing …

Cellular solids have gained extensive popularity in different areas of engineering due to
their unique physical and mechanical properties. Recent advancements in manufacturing …

The effective operation of certain electronic, medical, industrial, and testing equipment relies
on high-quality focusing and imaging capability, which also plays a vital role in the field of …

Most current shielding mechanisms against seismic disturbances fail in protecting structures
from low-frequency vibrations typically in the range of 1–10 Hz. This paper proposes a novel …

An extraordinary resolution down to 50 microns is demonstrated for the first time for bulk
ultrasonics, using novel micro-fabricated metamaterial lenses. The development and …

Passive metasurfaces are known for their fixed and usually single-wave manipulation
functionality, which limits their potential applications for diverse scenarios. To expand the …

This study systemically applies porous acoustic metamaterials in an inverted wedge shape
on the planar interface. The porous acoustic metamaterials have been studied analytically …

Nonlinear ultrasonic guided waves are among the most promising new tools for early stage
damage detection owing to their high sensitivity and long-range propagation features …

Detection of defects located close to design features such as welds and supports remains a
challenge in guided ultrasonic wave inspection, primarily due to the diffraction limit …

Hyperlenses for ultrasonic imaging in nondestructive evaluation and non-invasive
diagnostics have not been widely discussed, likely due to the lack of understanding on their …