Journal ArticleDOI
Transformation optics applied to van der Waals interactions
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TLDR
The van der Waals force originates from the electromagnetic interaction between quantum fluctuation-induced charges and has a wide range of applications in surface related phenomena like adhesion, friction, and colloidal stability as discussed by the authors.Abstract:
The van der Waals force originates from the electromagnetic interaction between quantum fluctuation-induced charges. It is a ubiquitous but subtle force which plays an important role and has a wide range of applications in surface related phenomena like adhesion, friction, and colloidal stability. Calculating the van der Waals force between closely spaced metallic nanoparticles is very challenging due to the strong concentration of electromagnetic fields at the nanometric gap. Especially, at such a small length scale, the macroscopic description of the dielectric properties no longer suffices. The diffuse nonlocal nature of the induced surface electrons which are smeared out near the boundary has to be considered. Here, we review the recent progress on using three-dimensional transformation optics to study the van der Waals forces between closely spaced nanostructures. Through mapping a seemingly asymmetric system to a more symmetric counterpart, transformation optics enables us to look into the behavior of van der Waals forces at extreme length scales, where the effect of nonlocality is found to dramatically weaken the van der Waals interactions.read more
Citations
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Journal ArticleDOI
Transformation optics from macroscopic to nanoscale regimes: a review
TL;DR: Transformation optics is a mathematical method that is based on the geometric interpretation of Maxwell's equations as mentioned in this paper, which enables a direct link between a desired electromagnetic (EM) phenomenon and the material response required for its occurrence, providing a powerful and intuitive design tool for the control of EM fields on all length scales.
Journal ArticleDOI
Identification of green tea origins by near-infrared (NIR) spectroscopy and different regression tools
Xin-gang Zhuang,Xin-gang Zhuang,Li-li Wang,Li-li Wang,Qi Chen,XueYuan Wu,Jia-xiong Fang,Jia-xiong Fang +7 more
TL;DR: In this paper, a near-infrared (NIR) spectroscopy was applied to efficiently and non-destructively identify Shandong green tea origins coupled with three different regression tools.
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Fractional Transport of Photons in Deterministic Aperiodic Structures
TL;DR: This work demonstrates tunable anomalous photon transport, including the elusive logarithmic Sinai sub-diffusion in photonic systems for the first time, and establishes a fruitful connection between tunable photon diffusion and fractional dynamics, which provides analytical insights into the asymptotic transport regime of optical media with deterministic aperiodic order.
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Negative exponential behavior of image mutual information for pseudo-thermal light ghost imaging: observation, modeling, and verification
TL;DR: Based on information theory and a few simple and verifiable assumptions, semi-quantitative model of image mutual information under varying measurement numbers is established and a negative exponential behavior with respect to the measurement number is observed.
Journal ArticleDOI
The NV metamaterial: Tunable quantum hyperbolic metamaterial using nitrogen vacancy centers in diamond
TL;DR: In this paper, a hyperbolic dispersion relation in diamond with nitrogen-vacancy (NV) centers was shown to be able to be tuned by applying a magnetic field at 20 K.
References
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Book
Intermolecular and surface forces
TL;DR: The forces between atoms and molecules are discussed in detail in this article, including the van der Waals forces between surfaces, and the forces between particles and surfaces, as well as their interactions with other forces.
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Handbook of Optical Constants of Solids
TL;DR: In this paper, E.D. Palik and R.R. Potter, Basic Parameters for Measuring Optical Properties, and W.W.Hunter, Measurement of Optical Constants in the Vacuum Ultraviolet Spectral Region.
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TL;DR: In this article, the propagation of electromagnetic waves and X-ray diffraction of X rays in crystals are discussed. But they do not consider the effects of superconductivity on superconducting conductors.
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Principles of colloid and surface chemistry
Paul C. Hiemenz,Raj Rajagopalan +1 more
TL;DR: Colloid and surface chemistry - scope and variables sedimentation and diffusion and their equilibrium solution thermodynamics - osmotic and Donnan equilibria the rheology of dispersions static and dynamic light scattering and other radiation scattering surface tension and contact angle - application to pure substances adsorption from solution and monolayer formation colloidal structures in surfactant solutions - association colloids adsorction at gas-solid interfaces van der Waals forces the electrical double layer and double-layer interactions electrophoresis and other electrokinetic phenomena electrostatic and polymer-induced
Journal ArticleDOI
The London—van der Waals attraction between spherical particles
TL;DR: In this article, the London-v.d. interaction between two spherical particles is computed as a function of the diameters and the distance separating them, and a table is calculated which enables numerical application of the formulae derived.