Attosecond X-ray laser vision Diling Zhu & David A. Reis Article 25 November 2024 | Open Access Terawatt-attosecond hard X-ray free-electron laser at high repetition rate Using the European XFEL free-electron laser, researchers demonstrate terawatt-scale, attosecond hard X-ray pulses. Ten...
Structured light refers to the arbitrarily tailoring of optical fields in all their degrees of freedom (DoFs), from spatial to temporal. Although orbital angular momentum (OAM) is perhaps the most topical example, and celebrating 30 years since its connection to the spatial structure of light, co...
Myopia is a condition in which the eyeball becomes excessively elongated, leading to blurry distance vision because the projected image is focused in front of the retina. The prevalence of myopia has reached epidemic levels in the past decade and during the COVID pandemic [1,2,3], particularly...
Introduction Organic semiconductors such as small molecules and conjugated polymers are a new class of attractive photoactive materials for photo-sensing in various imaging applications1,2,3,4,5,6,7,8. Their narrow optical absorption bands9, combined with highly-flexible, light-weight, transparent, ...
Fig. 1: A multichannel optical neural network (Monet) architecture for advanced machine vision tasks. a Network architecture of Monet and the projection-interference-prediction framework. Multiple observations are projected to a shared domain and encoded into optical fields, processed by interference unit...
(Chameleon Vision-S) with 800-nm, roughly 100-fs pulses at the sample location at 80 MHz repetition rate. As seen in Fig.1e, these low fluences ensure linear responses and also preclude thermally induced nanoantenna deformation or photochemical degradative effects51that can occur in the ...
realize this vision, polycyclic aromatic hydrocarbon (PAH)-type luminophores possessing a largeπ-conjugate plane come into our sights32,33. The highly stable dimer formed in these molecular systems due to the strongπ-πinteraction between PAH groups may break the tether of crystallization and be...
One of the biggest challenges in tissue engineering and regenerative medicine is to ensure oxygen supply of cells in the (temporary) absence of vasculature. With the vision to exploit photosynthetic oxygen production by microalgae, co-cultivated in close
Sn-based perovskite nanocrystals can have optical bandgaps that extend into the near-infrared light region36,37. A fundamental design for a 3D light-field detection involves lithographically patterning perovskite nanocrystals onto a transparent substrate (Fig.1a). A 3D light-field sensor can then be...
rods (Fig.5a) and covered an area of approximately 3.0 × 2.4 mm² in the retina. The measurement region was selected such that the area occupied by vessels was minimized. The entrance position of the measurement beam was chosen to be slightly nasal to the pupil centre to achieve ...