Related Experiment Video
Updated: Jun 16, 2025
09:33
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
6.3K
Polaritonic Chemistry Enabled by Non-Local Metasurfaces
Francesco Verdelli1, Yu-Chen Wei2, Kripa Joseph3
1Dutch Institute for Fundamental Energy Research, 5600HH, Eindhoven, The Netherlands.
Angewandte Chemie (International Ed. in English)
|August 19, 2024
Summary
Non-local metasurfaces enable vibrational strong coupling for chemical reactions. This new platform accelerates reactions via surface lattice resonances, offering a simpler alternative to traditional optical cavities.
Area of Science:
- Chemistry
- Materials Science
- Physical Chemistry
Background:
- Vibrational strong coupling (VSC) offers novel ways to influence chemical reactions.
- Fabry-Perot cavities are conventionally used for VSC, but have limitations.
- Metasurfaces provide an alternative platform for VSC in chemical reactions.
Purpose of the Study:
- To demonstrate the use of non-local metasurfaces for VSC in chemical reactions.
- To investigate the acceleration of chemical kinetics using surface lattice resonances.
- To introduce a new, more accessible platform for polaritonic chemistry.
Main Methods:
- Fabrication and characterization of non-local metasurfaces.
- Implementation of metasurfaces to create open optical cavities.
- Monitoring solvolysis kinetics of para-nitrophenyl acetate under VSC conditions.
Main Results:
- Metasurfaces sustained surface lattice resonances enabling VSC.
- Solvolysis kinetics of para-nitrophenyl acetate were accelerated by a factor of 2.7.
- Strong coupling was achieved between the solute's carbonyl bond, solvent, and surface lattice resonance.
Conclusions:
- Non-local metasurfaces are effective for VSC in chemical reactions.
- This approach offers significant acceleration of reaction kinetics.
- Metasurface-based polaritonic chemistry provides a simplified, large-area alternative to Fabry-Perot cavities.
Related Concept Videos
01:29Potential Due to a Polarized Object
373
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
373
01:28Induced Electric Dipoles
4.2K
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
4.2K
03:37Molecular Shape and Polarity
59.9K
Dipole Moment of a Molecule
59.9K
03:09Measuring Reaction Rates
24.9K
Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
24.9K
01:27π Electron Effects on Chemical Shift: Overview
1.1K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.1K
02:24Polar Covalent Bonds
18.9K
Covalent bonds are formed between two atoms when both have similar tendencies to attract electrons to themselves (i.e., when both atoms have identical or fairly similar ionization energies and electron affinities). Nonmetal atoms frequently form covalent bonds with other nonmetal atoms. For example, the hydrogen molecule, H2, contains a covalent bond between its two hydrogen atoms. When two separate hydrogen atoms with a particular potential energy approach each other, their valence orbitals...
18.9K