60 citations · 303 across the 19 of their papers we have counts for
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Resonant exciton transfer in mixed-dimensional heterostructures for overcoming dimensional restrictions in optical processes
N. Fang, D. Yamashita, S. Fujii +8
Nanomaterials exhibit unique optical phenomena, in particular excitonic quantum processes occurring at room temperature. The low dimensionality, however, imposes strict requirement…
Quantum emission assisted by energy landscape modification in pentacene-decorated carbon nanotubes
Zhen Li, Keigo Otsuka, Daiki Yamashita +2
Photoluminescent carbon nanotubes are expected to become versatile room-temperature single-photon sources that have applications in quantum information processing. Quantum emission…
Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology
K. Otsuka, N. Fang, D. Yamashita +3
When continued device scaling reaches the ultimate limit imposed by atoms, technology based on atomically precise structures is expected to emerge. Device fabrication will then req…
Hexagonal boron nitride as an ideal substrate for carbon nanotube photonics
N. Fang, K. Otsuka, A. Ishii +4
Hexagonal boron nitride is widely used as a substrate for two-dimensional materials in both electronic and photonic devices. Here, we demonstrate that two-dimensional hexagonal bor…
Super-Resolution Fluorescence Imaging of Carbon Nanotubes Using a Nonlinear Excitonic Process
K. Otsuka, A. Ishii, Y. K. Kato
Highly efficient exciton-exciton annihilation process unique to one-dimensional systems is utilized for super-resolution imaging of air-suspended carbon nanotubes. Through the comp…
Organic molecular tuning of many-body interaction energies in air-suspended carbon nanotubes
S. Tanaka, K. Otsuka, K. Kimura +4
We investigate adsorption effects of copper phthalocyanine molecules on excitons and trions in air-suspended carbon nanotubes. Using photoluminescence excitation spectroscopy, we o…