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Several theoretical approaches, different from their viewpoints to optical near-field problems, have been proposed for a decade. The essential points in difference are related to what the optical near-field interaction is, or how materials respond to light confined in a small area less than the wavelength. The so-called classical approach that is based on the macroscopic Maxwell equations extends...
Methanogens, the members of domain Archaea are potent contributors in global warming. Being confined to the strict anaerobic environment, their direct cultivation as pure culture is quite difficult. Therefore, a range of culture-independent methods have been developed to investigate their numbers, substrate uptake patterns, and identification in complex microbial communities. Unlike other approaches,...
We report nanophotonic energy up-conversion operation in ZnO nanorod double-quantum-well structures assisted by the optical absorption of phonons via an optical near-field.
We observed spectral switching and evaluated its dynamics by controlling the dipole- forbidden optical near-field energy transfer among resonant exciton states using lD-ZnO nanorod double-quantum-well structures.
We observed nutation in the time-resolved photoluminescence signals from resonantly coupled ZnO double-quantum-well structures via optical near-field energy transfer, in which the period of the nutation was determined to be 550 ps.
High spatial localization of an optical near field allows us to access and excite individual nanometric materials that are much smaller than the diffraction limit of light, while propagating or far-field light can only excite the system globally. This difference, as an initial condition, provides the new exciton dynamics by effective use of a dark state, or a dipole-forbidden state in a quantum-dot...
We propose and demonstrate a memory-based computation architecture combining data summation and broadcast mechanisms using optical near-field interactions between quantum dots, which will allow high-density integration beyond the diffraction-limit of light.
Summary form only given. Recent experimental studies have revealed distinct characteristics of optical near fields. Highly localized optical near fields could be applied to not only a high-resolution microscope beyond the diffraction limit of light but also fabrication of nanometric devices. From this point of view, a theory, which quantitatively deals with interactions between a nanometric probe...
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