Chiroferromagnetic Quantum Dots for Chiroptical Synapse (ChiropS)
Optoelectronic devices using circularly polarized light (CPL) offer enhanced sensitivity and specificity for efficient data processing. There is a growing demand for CPL sensing mediums with strong optical activity, stability and sensitivity, multiple transition bands, and environmental compatibility. Here, defect-engineered chiroferromagnetic quantum dots (CFQDs) are used as a new type of CPL sensing material. By inducing amorphization defects through chiral molecules, CFQDs with high unpaired electron density, atomic structural chirality, amplified chiroptical activity, and multiple exciton transition bands are developed. CFQDs enable nonlinear, long-term plastic behavior with linear optical input, acting as in situ noise filters that reduce noise by over 20%. Additionally, CFQDs provide over nine times higher integration for photon polarization and wavelength distinctions, paving the way for next-generation processors with improved energy efficiency, integration, and reduced retention time.
Authors
- Jihyeon Yeom (ORCID: https://orcid.org/0000-0002-3032-8301)
- Min Gu Lee
- Woon Hyung Cheong (ORCID: https://orcid.org/0000-0002-4738-3075)
- Changhyeon Lee (ORCID: https://orcid.org/0000-0002-7584-2718)
- Hanchan Song (ORCID: https://orcid.org/0000-0003-2968-7216)
- Geunyoung Kim (ORCID: https://orcid.org/0000-0002-2493-2481)
- Walber Gonçalves Guimarães (ORCID: https://orcid.org/0000-0003-0892-8631)
- André Farias de Moura (ORCID: https://orcid.org/0000-0003-1974-4803)
- Kyung Min Kim (ORCID: https://orcid.org/0000-0002-0190-4226)
- Jae Bum Jeon
- Sung Gap Im
- Junyoung Kwon (ORCID: https://orcid.org/0000-0001-9615-7827)
Institutions
- Korea Advanced Institute of Science and Technology (KR)
- Universidade Federal de São Carlos (BR)
- Pukyong National University (KR)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-04-07
- DOI
- https://doi.org/10.1002/adma.202415366
- Citations
- 4
- Primary Topic
- Liquid Crystal Research Advancements
- Type
- article
- Field-Weighted Citation Impact
- 1.71
Funders
- Korea Medical Device Development Fund
- National Research Foundation
- Ministry of Trade, Industry and Energy
- Ministry of Food and Drug Safety
- National Research Foundation of Korea
- Ministry of Science and ICT, South Korea