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Optical and Quantum Materials Engineering Lab
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A lab that controls light with micro- and nanostructures such as quantum dots.
AboutAbout the lab
Controlling light with micro- and nanostructures
The Optical and Quantum Materials Engineering Lab studies quantum dots and related topics under the keyword "controlling light with micro- and nanostructures."
Its research themes include the synthesis of colloidal quantum dots, metamaterial photon emitters, and quantum dot superlattice solar cells.
Quantum dots are semiconductor nanocrystals a few nanometers in diameter, and they attract attention because they give rise to various quantum effects.
On the lab's website, the lab is presented under the name "Mukai Lab."
Key terms
- Quantum dot
- A semiconductor nanocrystal a few nanometers in diameter. It can confine an electron and a hole as a pair, and can be thought of as an artificial atom.
- Superlattice
- A structure in which quantum dots are arranged at high density. The electron wave functions overlap, creating a new energy band called a miniband.
ResearchResearch themes
The lab studies quantum dot technology for controlling the quantum states of photon pairs used in optical communications and future quantum communications. It also aims to create superlattices from arrays of chemically synthesized quantum dots and apply them to solar cells.
*Illustrative imageQuantum dot technology for manipulating photon pairs
The lab develops techniques to evaluate the symmetry of quantum dot structures using X-ray diffraction and polarization measurements, and chemically synthesizes PbS and InAs quantum dots. For PbS, symmetry was improved by changing the synthesis conditions, and emission at wavelengths in the optical communication band has been confirmed.
*Illustrative imageQuantum dot superlattices and solar cells
This is an attempt to build superlattices by arranging chemically synthesized quantum dots in a regular pattern, in order to realize high-efficiency solar cells. As templates to promote the arrangement, the lab is considering substrates processed with periodic guide structures or V-grooves.
MembersFaculty
The members of the Optical and Quantum Materials Engineering Lab consist of faculty, technical staff, and doctoral, master's, and undergraduate students.As of 2024
- ProfessorKohki Mukai
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Rooftop Solar Panels 3KW” Dr. Chinchu C. / CC BY 4.0 (cropped)
- Quantum dot technology for manipulating photon pairs: “Quantum Dots” Brandon CP BMED / CC BY-SA 3.0 (cropped)
- Quantum dot superlattices and solar cells: “Hexagon solar cells” Wikideas1 / CC0 (cropped)
- Related lab (Functional Materials Engineering Lab): “Radioisotope Thermoelectric Generator for Lunar Surface Operations (rtg-beautyshot)” NASA / Public domain (cropped)
- Related lab (Physical Properties and Materials Informatics Lab): “XYZ stage powder diffraction of solid sample” Warrenmck / CC BY-SA 4.0 (cropped)
- Related lab (Advanced Materials Engineering Lab): “255-GRC-1987-C-01044 Fiber-reinforced ceramic matrix, strain damage (2)” 作者不詳 / Public domain (cropped)
- Related lab (Magnetic and Spintronic Materials Lab): “Molecular beam epitaxy” Yakovlev Viktor / CC BY 4.0 (cropped)
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