FIGURE 1. (a) Schematic illustration of the nanoporous 0D@1D structureunderalaserirradiation.(b)TEMimageofacross-stacking SACNT film. (c) TEM image of the Ag-CNT grid SERS substrate. (d) Raman spectra of R6G on Ag-CNT grid, Ag-Si wafer, and CNT grid. Thelaserpoweronsamplesis470µWandtheexposuretimeis20s. Inset is the SEM image of Ag-Si wafer.