2021 Fiscal Year Annual Research Report
Long-range guided surface waves with transverse spin and subwavelength confinement for optical switching and sensing
| Project/Area Number |
21H01383
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
J・J Delaunay 東京大学, 大学院工学系研究科(工学部), 准教授 (80376516)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
古川 克子 東京大学, 大学院工学系研究科(工学部), 准教授 (90343144)
松井 裕章 東京大学, 大学院工学系研究科(工学部), 准教授 (80397752)
何 亜倫 東京大学, 大学院工学系研究科(工学部), 助教 (20815386)
|
|---|
| Project Period (FY) |
2021-04-01 – 2024-03-31
|
| Keywords | surface wave / sensing / metasurface |
|---|
| Outline of Annual Research Achievements |
Structures that guide surface waves on a photonic crystal were designed by simulation. These structures made of a slab of dielectric material were patterned into microstructures to realize near-zero-index guided modes that were used to launch surface waves on the photonic crystal. The separation between adjacent near-zero-index slabs was used to control the formation of constructive and/or destructive interferences that realize different optical functions mimicking optical logic gates. AND, OR, and XOR logic gates were proposed and the XOR gate was demonstrated experimentally. The logic gate device was fabricated by patterning guiding slabs by electron beam lithography, and the device response was characterized using a microscopic setup operating in the telecommunication wavelengths.
|
| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
Guiding structures have been designed on the proposed platform that performs all-optical logic operations such as AND, OR and XOR. The XOR logical gate was demonstrated experimentally. The results were published in ACS Nano a leading journal in the field of nanotechnology.
|
| Strategy for Future Research Activity |
We will apply our platform to on-a-chip sensing, particularly biochemical sensing. For this purpose, the guiding structures should be re-designed together with a high sensitivity scheme dedicated to biosensing. Using simulations and experimental verifications, we will design new coupling and guiding structures and sensing interferometric schemes. Here, the detection scheme should be sensitive to a minute change in the surface conditions. Also, the characterization setup built in the first year should be modified so that biochemical reactions can be monitored in real-time by introducing a micro-fluidic system. The preliminary characterization of the biosensing detection will be based on a sensitivity study using a standard protein-ligand scheme.
|
-
-
-
-
-
[Presentation] Plasmonic Nanolaser by Silver Nanowire Embedded in CsPbBr3 Quantum Dots2021
Author(s)
Di Xing, Cheng-Chieh Lin, Phillip Won, Rong Xiang, Tzu-Pei Chen, A Syazwan A Kamal, Yang-Chun Lee, Ya-Lun Ho, Shigeo Maruyama, Seung Hwan Ko, Chun-Wei Chen, Jean-Jacques Delaunay
Organizer
JSAP-OSA Joint Symposia at The 82nd JSAP Autumn Meeting
Int'l Joint Research
-
