In this work, using the scanning near-field optical fiber probe method, we carry out a direct observation of below-diffraction-limited optical spot induced by nonlinear saturable absorption characteristic of Ag-doped Si nanofilms. The experimental results indicate that the squeezed spot size decreases with laser power increase, and the smallest spot can be squeezed to 68% of the diffraction-lim...

Exciton–polaritons are unique quasiparticles with hybrid properties of an exciton and a photon, opening ways to realize ultrafast strongly nonlinear systems inversion-free lasers based on Bose–Einstein polariton condensation. However, the real-world applications still limited due temperature operation costly fabrication techniques for both materials photon cavities. 2D perovskites represent one...

Phase Nanoengineering Article 2300166 by Daniela Petti, Edoardo Albisetti, and co-workers shows the innovative approach called phase nanoengineering for crafting nanomaterials. In particular, advanced nanofabrication techniques such as thermal scanning probe lithography direct laser writing are used to directly induce highly controlled, localized stable changes in electronic, magnetic or optica...

Although nanoparticles with exquisite properties have been synthesized for a variety of applications, their incorporation into functional devices is challenging owing to the difficulty in positioning them at specified sites on surfaces. In contrast with the conventional synthesis-then-assembly paradigm, scanning probe block copolymer lithography can pattern precursor materials embedded in a pol...

The formation of a water meniscus between a sharp tip and a solid surface is one of the prevailing requirements for scanning probe microscope (SPM)-based lithographies, such as dip-pen nanolithography (DPN) and conductive tip induced oxidation. The water meniscus functions as a medium for the oxidation of or mass transfer to the solid surface. Here we report a simple, efficient, and effective a...