3D-printed metamaterials harness complex geometry to dampen mechanical vibrations

In science and engineering, it's unusual for innovation to come in one fell swoop. It's more often a painstaking plod through ...
IEEE

Design of Non-Uniform 3-D Arrays for Near-Field XL-MIMO Communications

Abstract: In this letter, a general design criterion is proposed for optimizing non-uniform three-dimensional (3D) arrays to enhance near-field capacity in extremely large-scale MIMO (XL-MIMO) ...
IEEE

Development of PCSEL-Array Module Towards Metal 3D Printing Applications

Abstract: We develop a PCSEL-array module towards metal 3D printing applications. We develop a module with four 3-mm-diameter PCSELs, which are mounted on a heat sink in a $\mathbf{2}\times ...
Solar Power World

Historic Howard Theatre in D.C. adds 106-kW rooftop solar array

The historic Howard Theatre in Washington, D.C., has added a new 106.82-kW rooftop solar array paired with storage with help from the DC Green Bank and DC Sustainable Energy Utility (DCSEU). The ...