Research

Research Overview featured image

Research Overview

Our research group is dedicated to exploring the frontiers of quantum nanostructures and advancing our fundamental understanding of their properties. We focus on creating …

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2D Optoelectronics

To explore unique physical properties and functions in low-dimensional materials, we are working to create high-performance devices by combining cutting-edge micro/nanofabrication …

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1D and 2D Photophysics

We investigate unique physical properties of low-dimensional materials such as carbon nanotubes and two-dimensional semiconductors. Our research focuses on understanding …

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Solid-State Quantum Light Sources

Our research in quantum defects focuses on creating and characterizing precisely defined quantum emitters in nanomaterials based on functionalization engineering. We explore both …

Deterministic Formation of Single Organic Color Centers in Carbon Nanotubes featured image

Deterministic Formation of Single Organic Color Centers in Carbon Nanotubes

Development of deterministic single-molecule modification method for controlled formation of quantum emitters in carbon nanotubes, achieving position, number, and wavelength …

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Facilities

For a comprehensive list of equipment, please visit the Facilities in 2D Quantum Materials Group. Key Research Instruments Continuous-wave (CW) tunable Ti:sapphire laser system …

Upconversion photoluminescence in carbon nanotubes featured image

Upconversion photoluminescence in carbon nanotubes

PL and UCPL spectra for the same SWNT. Introduction Our research delves into an exciting optical phenomenon called upconversion photoluminescence, where materials absorb …

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Daichi Kozawa
Quantum emitters in hexagonal boron nitride featured image

Quantum emitters in hexagonal boron nitride

optical micrograph and photoluminescence image of hBN. © 2023 IOP Publishing Ltd Our research group has investigated Discretized Hexagonal Boron Nitride Quantum Emitters and Their …

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Daichi Kozawa
Formation of organic color centers in pristine carbon nanotubes featured image

Formation of organic color centers in pristine carbon nanotubes

A schematic (left) and an electron micrograph (right) of a tube after the functionalization. Our research group has demonstrated the Formation of Organic Color Centers in …

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Daichi Kozawa
Fiber-optic nanosensor of nIR fluorescent carbon nanotube transducers featured image

Fiber-optic nanosensor of nIR fluorescent carbon nanotube transducers

Fiber Optic Interface. © 2020 American Chemical Society Our research group has developed A Fiber Optic Interface Coupled to Nanosensors with applications to protein aggregation …

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Daichi Kozawa