Guangyuan Li

TL;DR: A draft sequence for the genome of the domesticated silkworm (Bombyx mori), covering 90.9% of all known silkworm genes is reported, which exceeds the estimated gene count for Drosophila melanogaster.

TL;DR: A more inclusive new approach for analyzing duplication history is introduced here, which reveals an ancient whole-genome duplication, a recent segmental duplication on Chromosomes 11 and 12, and massive ongoing individual gene duplications.

TL;DR: This map is based on a comparison of the sequences of three domestic chicken breeds with that of their wild ancestor, red jungle fowl, and indicates that at least 90% of the variant sites are true SNPs, and at least 70% are common SNPs that segregate in many domestic breeds.

Abstract: Abstract We propose and experimentally demonstrate a novel strategy to achieve dual-band symmetry-protected bound states in the continuum (BICs) in silicon metasurfaces. This strategy is based on the hybridization of Mie surface lattice resonances (SLRs) in periodic silicon bipartite nanodisk arrays, of which the central nanodisk displaced from the center of the unit cell. We show that dual-band electric quadrupole and magnetic dipole BICs can be supported in such a system, and transfer to quasi-BICs with ultrahigh measured quality factors up to 1240 at the Γ point. Taking advantage of the SLR characteristics, we show that the spectral separation and the quality factors of these two quasi-BICs can be conveniently tuned by varying the nanodisk diameter or the lattice period. Making use of these dual-band quasi-BICs, we numerically obtain bulk sensitivities above 480 nm/RIU and high figures of merit up to 1200. We also show that when the central nanodisk is not displaced but has different diameter, the silicon bipartite nanodisk array supports an electric dipole BIC that was referred to as subradiant SLR in the literature. Our work provides a new approach for realizing and tuning dual-band BICs, and the obtained ultrahigh-Q quasi-BICs can find potential applications in nonlinear optics, multimodal lasing, and optical sensing.