Bi ${}_2$ Se ${}_3$ has extensive application as thermoelectric materials. Here, large-scale Bi ${}_2$ Se ${}_3$ single-crystal hexagonal nanoplates with size 7.50–10.0 $\mathsf{\mu }$ m were synthesized successfully by hydrothermal method. X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM) were used to characterize the Bi ${}_2$ Se ${}_3$ nanoplates, which confirm the single-crystal quality and smooth surface morphology with large size. Micro-Raman spectra over a temperature range of 83–603 K were furthermore used to investigate the lattice dynamics of Bi ${}_2$ Se ${}_3$ nanoplates. Both 2A ${}_g^1$ and 1E ${}_g^2$ modes shift evidently with reduced temperature. The line shape demonstrates a significant broadening of full width at half maximum (FWHM) and red-shift of frequency with increased temperature. The temperature coefficient of A ${}_{1g}^1$ , E ${}_g^2$ , A ${}_{1g}^2$ modes were determined to be −1.258 × 10 ${}^{-2}$ cm ${}^{-1}$ /K, −1.385 × 10 ${}^{-2}$ cm ${}^{-1}$ /K, −2.363 × 10 ${}^{-2}$ cm ${}^{-1}$ /K, respectively. Such low temperature coefficient may favor the obtaining of a high figure of merit (ZT) and indicate that Bi ${}_2$ Se ${}_3$ nanoplates were used as excellent candidates of thermoelectric materials.

BiTe has been widely used as thermoelectric material. Here the BiTe nanotubes were synthesized by solvothermal method for the first time. The BiTe nanotubes were characterized via scanning electron microscope (SEM), X-ray diffraction (XRD) as well as transmission electron microscope (TEM), indicating the high crystal qualities of as-prepared products. The lattice dynamics of BiTe nanotubes was further studied via the micro-Raman scattering spectra in the temperature range of 103-593 K. Both the peak position and mode width of ${\mathrm{2}\mathrm{A}}_g^1$ , ${\mathrm{1}\mathrm{E}}_g^1$ exhibit an obvious change with decreased temperature. All the ${\mathrm{E}}_g^1$ , ${\mathrm{A}}_{1g}^1$ , ${\mathrm{E}}_g^2$ , ${\mathrm{A}}_{1g}^2$ modes have ultralow temperature coefficients of 1.85 × 10⁻⁵, 1.98 × 10⁻⁴, 1.09 × 10⁻⁴, 2.34 × 10⁻⁴ cm⁻¹/K, respectively, which should be beneficial for obtaining high figure of merit (ZT) and confirm the outstanding thermoelectric performance of BiTe nanotubes.

We proposed an efficient scheme for implementing the large-scale one-way Quantum computing (QC) with a novel hybrid solid-state quantum system. This system consists of N Nitrogen-vacancy (N-V) centers coupled to N separate Transmission line resonators (TLRs), which are interconnected by a Current-biased Josephson junction (CBJJ) superconducting phase qubit. We showed the way of preparation of N-qubit linear cluster state with N N-V centers, then we demonstrated the way of extending cluster state by connecting two pieces of linear cluster states into two-dimensional cluster state, last, with our designed new structures, we demonstrated the QC basic operations. It means that our scheme may open up promising possibilities for implementing the practical and scalable one-way quantum computers with the hybrid solid-state quantum system. We discussed the experimental feasibility of our system.