Seminário Extra: Seeing with the nano-eye: imaging structure, function, and dynamics of matteron its natural length and time scales

Tounderstand and ultimately control the properties of most functional materials,from molecular soft-matter to quantum materials, requires access to thestructure, coupling, and dynamics on the elementary time and length scales thatdefine the microscopic interactions in these materials. To gain the desirednanometer spatial resolution with simultaneous spectroscopic specificity wecombine scanning probe microscopy with different optical, including coherent,nonlinear, and ultrafast spectroscopies. The underlying near-field interactionmediated by the atomic-force or scanning tunneling microscope tip provides thedesired deep-sub wavelength nano-focusing enabling few-nm spatial resolution. Iwill introduce our generalization of the approach in terms of the near-fieldimpedance matching to a quantum system based on special optical antenna-tipdesigns. The resulting enhanced and qualitatively new forms of light-matterinteraction enable measurements of quantum dynamics in an inter!
actingenvironment or to image the electromagnetic local density of states of thermalradiation. Other applications include the inter-molecular coupling and dynamicsin soft-matter hetero-structures, surface plasmon/phonon interferometry as aprobe of electronic structure and dynamics in 2D materials, and quantum phasetransitions in correlated electron materials. These examples highlight thegeneral applicability of the new near-field microscopy approach, complementingemergent X-ray and electron imaging tools, aiming towards the ultimate goal ofprobing matter on its most elementary spatio-temporal level.