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Lightwave and Microwave Lab
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A lab that freely manipulates electromagnetic waves with metamaterials, working on invisibility cloaks and 6G.
AboutAbout the lab
Drawing out the unusual properties of electromagnetic waves with artificial materials.
The Lightwave and Microwave Lab uses metamaterials to study technologies that make use of unusual properties of electromagnetic waves.
The subtitle of the lab's website is "The Science of Invisibility Cloaks and Artificial Metamaterials," and the lab works on terahertz-wave technologies that support 6G, invisibility cloak technologies, and more.
Other research includes controlling the paths of light by coordinate transformation, and a special electromagnetic field in which the electric and magnetic fields are parallel.
The lab's website introduces it under the name "Sanada Laboratory."
Key terms
- Metamaterial
- A material with an artificially made structure, designed to show properties toward electromagnetic waves that differ from those of natural substances.
- Terahertz waves
- Electromagnetic waves in a frequency band between radio waves and light.
- Invisibility cloak
- A technology that bends the paths of light or radio waves around an object so that the object cannot be seen.
- Beltrami electromagnetic field
- An unusual electromagnetic field in which the electric and magnetic fields are parallel and the Poynting vector is zero.
- Poynting vector
- A vector that represents the direction and magnitude of the flow of energy in an electromagnetic field.
NewsLab news
A student received the IEICE MW Best Presentation of the Year Award
A student received the Best Poster Award at the IEEE MTT-S Kansai Chapter young researchers' technical conference
ResearchResearch themes
The lab uses artificially made metamaterials to study technologies that make use of unusual properties of electromagnetic waves. It works on terahertz-wave technologies that support 6G, invisibility cloaks, and control of light by coordinate transformation.
*Illustrative imageTerahertz-wave technologies supporting 6G
The lab aims to support 6G with metamaterial technologies for terahertz waves that make use of unusual properties of electromagnetic waves. Its papers include a metasurface using stretchable electronic elements and an anomalous reflector.
Invisibility cloak technologies
The lab is pioneering invisibility cloak technologies based on the ideas of metamaterials. Its papers include an all-dielectric carpet cloak and a cloak that works in two frequency bands.
*Illustrative imageControl of light by coordinate transformation
Using the idea of coordinate transformation, the lab aims to control the paths of light as desired. Its papers include a double-folded transformation medium, a transformation illusion, and a coordinate-transformed resonator.
*Illustrative imageExploring Beltrami electromagnetic fields
The lab explores the Beltrami electromagnetic field, an unusual electromagnetic field in which the electric and magnetic fields are parallel and the Poynting vector is zero. Its papers include a Beltrami cavity resonator and its quarter-wavelength version.
MembersFaculty
The members of the Lightwave and Microwave Lab are the faculty, graduate students, undergraduate students, and international students.As of 2024
- ProfessorAtsushi Sanada
- Associate ProfessorYosuke Nakata
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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: “Anechoic Microwave Chamber” Kurt Barnett / CC BY-SA 3.0 (cropped)
- Terahertz-wave technologies supporting 6G: “Wilson Terahertz planar traveling-wave tube ckt” Dr. Jeffrey D. Wilson, Karl R. Vaden, Christine T. Chevalier, and Dr. Carol L. Kory / Public domain (cropped)
- Control of light by coordinate transformation: “Optical illusion on the floor of the Duomo Firenze (61458)” Rhododendrites / CC BY-SA 4.0 (cropped)
- Exploring Beltrami electromagnetic fields: “Electromagnetic Wave (Light Wave) vs Mechanical Wave (01F8GF5HE8JPQG4GTVFG6EPC23)” ILLUSTRATION: NASA, ESA, Leah Hustak (STScI) / Public domain (cropped)
- Related lab (Strongly Correlated Systems Theory Lab): “Levitation meissner” Julien Bobroff (user:Jubobroff), Frederic Bouquet (user:Fbouquet), LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Related lab (Strongly Correlated Systems Spectroscopy Lab): “Aust.-Synchrotron,-Storage-Ring-Magnets” jjron / CC BY-SA 3.0 (cropped)
- Related lab (Strongly Correlated Quantum Physics Lab): “Dilution Fridge in 16K Resolution 002” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (Functional Characterization of Strongly Correlated Materials Lab): “Superconducting magnet cutaway” Hzofia74 / CC BY 4.0 (cropped)
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