CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume PC12483 > Article
Presentation
28 April 2023 An LR-shunted resonator for observation of an exceptional point and programmable perfect absorption
Xiaopeng Li, Ziqi Yu, Taehwa Lee
Author Affiliations +
Proceedings Volume PC12483, Active and Passive Smart Structures and Integrated Systems XVII; PC124830K (2023) https://doi.org/10.1117/12.2663292
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States
Abstract
Non-Hermitian systems have brought great attention to researchers on wave manipulation by introducing losses. Here, we introduce an LR-shunted resonator for the observation of an exceptional point (EP) via tuning the shunting resistance. Through theoretical, numerical, and experimental studies, we demonstrate that by changing the circuit parameters, such as inductance and resistance, such a simple design supports the non-Hermitian degeneracy, namely the exceptional point. Moreover, near the EP, the mechanical resonance splitting has a square-root dependence on the resistance variation. We further numerically and experimentally demonstrate programmable perfect flexural wave absorption at the low-frequency range using this LR-shunted resonator. The absorption spectrum could be further enhanced with an additional shunted negative capacitor. Our approach provides alternative solutions for nondestructive structural health monitoring with enhanced sensitivity and perfect wave absorption.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Xiaopeng Li, Ziqi Yu, and Taehwa Lee "An LR-shunted resonator for observation of an exceptional point and programmable perfect absorption", Proc. SPIE PC12483, Active and Passive Smart Structures and Integrated Systems XVII, PC124830K (28 April 2023); https://doi.org/10.1117/12.2663292
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Resonators
Absorption
Resistance
Capacitors
Control systems
Inductance
Nondestructive evaluation
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top