uSEE (IMAGE) Macquarie University Caption uSEE microscopy: Employing super-linear emitters (upconversion nanoparticles) in standard confocal microscopy can result in spontaneous 3D super-resolution imaging. Importantly for biology, and opposite to all other super-resolution techniques, the achieved sub-diffraction resolution is higher for lower excitation powers. Credit CNBP Usage Restrictions For use when reporting on this story License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.