The dual-hollow-sphere-shaped optical microresonator is shown in Figure 1. The microcapillary (Polymicro, TSP075150) with inner and outer diameters of 76 µm and 151 µm is utilized to construct the ...

Debuted by Martin Guitars at the National Association of Music Merchants’ annual trade show on Wednesday, Jan. 22, the bluegrass icon’s collaboration with the esteemed acoustic manufacturers ...