Related Experiment Video
Updated: Feb 14, 2026
09:17
Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates
Published on: March 5, 2019
9.2K
Hyperbolic localized plasmons and twist-induced chirality in an anisotropic 2D material
Yaolong Li1,2, Xu Shi2,3, Yuxin Zhang1
1State Key Laboratory for Mesoscopic Physics & Department of Physics, Collaborative Innovation Center of Quantum Matter & Frontiers Science Center for Nano-optoelectronics, Peking University, Beijing, China.
Nature Communications
|February 12, 2026
Summary
Anisotropic 2D materials like MoOCl2 exhibit hyperbolic localized plasmon resonances (H-LPRs). These H-LPRs enable novel nanophotonic applications, including twist-induced chirality and ultrasensitive sensing.
Area of Science:
- Nanophotonics
- Materials Science
- Condensed Matter Physics
Background:
- Two-dimensional (2D) van der Waals materials with in-plane anisotropy offer unique platforms for nanophotonics.
- Conventional nanophotonics often relies on isotropic materials like noble metals and dielectrics.
Purpose of the Study:
- To demonstrate hyperbolic localized plasmon resonances (H-LPRs) in MoOCl2, a representative anisotropic 2D crystal.
- To explore the unprecedented properties and potential applications of H-LPRs in anisotropic 2D materials.
Main Methods:
- Fabrication and characterization of MoOCl2 nanodisks.
- Investigation of H-LPRs using far-field spectroscopy and near-field imaging.
- Stacking of twisted MoOCl2 flakes to explore moiré effects.
Main Results:
- Demonstration of H-LPRs in MoOCl2, arising directly from crystal anisotropy.
- Observed unique properties: 1D resonances, Z-gap independence, and twist-induced chirality with high circular dichroism (>0.65).
- Bridged H-LPRs with moiré photonics and twistronics by stacking twisted flakes.
Conclusions:
- H-LPRs in anisotropic 2D materials represent a versatile platform for nanophotonics.
- Potential applications include polarization engineering, chiral sensing, and integration into on-chip and quantum devices.
Related Concept Videos
02:25Chirality
29.7K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
29.7K
01:30Hyperbolic and Inverse Hyperbolic Functions: Problem Solving
132
An arched gate can be effectively modeled using a hyperbolic cosine profile because this type of function is smooth and symmetric about the vertical axis. When the arch is centered at the origin, its maximum height occurs at the center point. This symmetry ensures that any height below the crown of the arch is reached at two horizontal positions that are equal in distance from the centerline but lie on opposite sides.To determine where the gate reaches a height of five meters, the height of the...
132
01:25Hyperbolic Functions
74
A flexible cable suspended between two points at the same height naturally forms a curve known as a catenary. This shape results from the balance between the cable’s weight and the tension acting along its length, representing a state of mechanical equilibrium. Unlike simpler approximations, the true shape of a hanging cable is described using hyperbolic functions.Hyperbolic functions are closely related to exponential functions and are named for their connection to the geometry of the...
74
02:30Chirality in Nature
17.3K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
17.3K
01:25Inverse Hyperbolic Functions and Their Derivatives
81
The shape of a suspension bridge cable hanging under its own weight is described by a catenary curve, which is modeled using the hyperbolic cosine function. This mathematical model accurately captures the balance between gravity and tension acting along the cable. When a particular vertical position on the cable is known, the corresponding horizontal position can be determined using the inverse hyperbolic cosine function, allowing for a detailed analysis of the cable's geometry.Inverse...
81
01:13Angle of Twist: Problem Solving
814
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the torque...
814