Localized laser cooling provides a new way to trap and manipulate small objects.

Vibrational modes and tip enhanced Raman spectroscopy (TERS) of a new carbon allotrope, cyclo[18]carbon (C₁₈), were studied by density functional theory. A silver cluster tip was used to probe the interaction with C₁₈, which is dependent on the distance and the atomically resolved positions. The TERS images show the position of the CC bonds, as observed in a recent experimental report.

The nonlinear optical microscopies of coherent two‐photon excited fluorescence and anti‐Stokes Raman scattering are strongly enhanced by multiple surface plasmon resonances (MSPRs). The Au@Ag nanorods presented strong MSPRs peaks at 800 and 400 nm, and can enhance nonlinear optical microscopy at fundamental and double frequencies, respectively. A two‐dimensional (2D) material of g‐C ₃ N ₄ is employed to study the plasmon‐enhanced nonlinear optical microscopy by the femtosecond laser. The electric analysis reveals that the MSPRs of the Au@Ag nanorod can significantly enhance the signals of two‐photon excited fluorescence and anti‐Stokes Raman scattering by up to the orders of 10 ⁴ and 10 ¹⁶ , respectively. The results demonstrate the great advantages of plasmon‐enhanced nonlinear optical microscopy for the optical analysis on 2D materials, thus providing a new adventure for increasing the optical resolutions of nonlinear optical microscopy.