Eric Plum
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View article: Absorber of topologically structured light
Absorber of topologically structured light Open
Polarization- and wavelength-sensitive absorbers for homogeneous electromagnetic waves are crucial in photovoltaics, imaging, and telecommunications. Here, we report on an absorber selective to the topological structure of light. An electr…
View article: The 2025 Active Metamaterials Roadmap
The 2025 Active Metamaterials Roadmap Open
Active metamaterials are engineered structures that possess novel properties that can be changed after the point of manufacture. Their novel properties arise predominantly from their physical structure, as opposed to their chemical composi…
View article: General approach to perfect and broadband absorption in thin films
General approach to perfect and broadband absorption in thin films Open
Absorption of light in thin films is normally probabilistic. Here, we show that a film of any lossy material, with appropriate thickness, can achieve perfect absorption at any chosen wavelength. We derive the dispersion required to maintai…
View article: Electron-beam-controlled volatile nanomechanical bistability
Electron-beam-controlled volatile nanomechanical bistability Open
Bistability in nanomechanical resonators can be exploited for sensing, signal processing, and memory applications due to its potential for switching and high sensitivity to external stimuli. External vibration can be used to drive a doubly…
View article: Absorber of Topologically Structured Light
Absorber of Topologically Structured Light Open
Polarization- and wavelength-sensitive absorbers for homogeneous electromagnetic waves are crucial in photovoltaics, imaging and telecommunications. Here, we report on an absorber selective to the topological structure of light. An electro…
View article: Control of nanomechanical resonances by an electron beam
Control of nanomechanical resonances by an electron beam Open
The sensitivity of mechanical resonators to physical quantities such as acceleration, pressure, mass and temperature enables them to underpin sensing and metrology applications. Here, we observe that the resonance frequency of a nanomechan…
View article: Localization of nanoscale objects with light singularities
Localization of nanoscale objects with light singularities Open
Unprecedented atomic-scale measurement resolution has recently been demonstrated in single-shot optical localization measurements based on deep-learning analyses of diffraction patterns of topologically structured light scattered from obje…
View article: Optical analog of black and white gravitational holes
Optical analog of black and white gravitational holes Open
In general relativity, a gravitational “white hole” is a hypothetical region of space that cannot be entered from outside. It is the reverse of a “black hole” from which light and information cannot escape. We report an optical device exhi…
View article: Localization of nanoscale objects with light singularities
Localization of nanoscale objects with light singularities Open
Unprecedented atomic-scale measurement resolution has recently been demonstrated in single-shot optical localization metrology based on deep-learning analyses of diffraction patterns of topologically structured light scattered from objects…
View article: The 2024 Active Metamaterials Roadmap
The 2024 Active Metamaterials Roadmap Open
Active metamaterials are engineered structures that possess novel properties that can be changed after the point of manufacture. Their novel properties arise predominantly from their physical structure, as opposed to their chemical composi…
View article: Robust optical picometrology through data diversity
Robust optical picometrology through data diversity Open
Topologically structured light contains deeply subwavelength features, such as phase singularities, and the scattering of such light can therefore be sensitive to the geometry or movement of scattering objects at such scales. Indeed, it ha…
View article: 2D Super‐Resolution Metrology Based on Superoscillatory Light
2D Super‐Resolution Metrology Based on Superoscillatory Light Open
Progress in the semiconductor industry relies on the development of increasingly compact devices consisting of complex geometries made from diverse materials. Precise, label‐free, and real‐time metrology is needed for the characterization …
View article: 3D positional metrology of a virus-like nanoparticle with topologically structured light
3D positional metrology of a virus-like nanoparticle with topologically structured light Open
Locating and identifying viruses in in vitro optical measurements is desirable for disease control; however, the sub-diffraction-limit dimensions and low refractive index contrast of viruses make this challenging. Here, we introduce a 3D p…
View article: Microwatt Volatile Optical Bistability via Nanomechanical Nonlinearity
Microwatt Volatile Optical Bistability via Nanomechanical Nonlinearity Open
Metastable optically controlled devices (optical flip‐flops) are needed in data storage, signal processing, and displays. Although nonvolatile memory relying on phase transitions in chalcogenide glasses has been widely used for optical dat…
View article: Nonlinear Terahertz Generation: Chiral and Achiral Meta‐Atom Coupling
Nonlinear Terahertz Generation: Chiral and Achiral Meta‐Atom Coupling Open
Generation and manipulation of terahertz (THz) waves are of vital importance for advancing THz technology. Nonlinear metasurfaces allow effective integration of both processes into a single compact device. However, such existing THz device…
View article: Controlling THz generation in nonlinear metasurfaces through coupling: amplitude-tuning, handedness-selectivity and holography
Controlling THz generation in nonlinear metasurfaces through coupling: amplitude-tuning, handedness-selectivity and holography Open
Generation and manipulation of THz waves are of vital importance to advance THz technology. Nonlinear metasurfaces allow effective integration of both processes into a single compact device. However, the existing THz generator-manipulators…
View article: Non-contact optical magnetic field sensor based on metamaterial nanomechanics
Non-contact optical magnetic field sensor based on metamaterial nanomechanics Open
We demonstrate a non-contact optical magnetic field sensor that is based on actuation of a metamaterial-microcavity by the magnetic Lorentz force. Magnetic field is transduced to a change of the sensor’s reflectivity. The microscale proof-…
View article: Thermal Fluctuations of the Optical Properties of Nanomechanical Photonic Metamaterials
Thermal Fluctuations of the Optical Properties of Nanomechanical Photonic Metamaterials Open
The combination of optical and mechanical resonances offers strong hybrid nonlinearities, bistability, and the ability to efficiently control the optical response of nanomechanical photonic metamaterials with electric and magnetic field. W…
View article: Volatile optical bistability enabled by mechanical nonlinearity
Volatile optical bistability enabled by mechanical nonlinearity Open
Optical devices with metastable states controlled with light (optical flip-flops) are needed in data storage, signal processing and displays. Although non-volatile optical memory relying on structural phase transitions in chalcogenide glas…
View article: Defect-induced nonlinearity in 2D nanoparticles
Defect-induced nonlinearity in 2D nanoparticles Open
Optical nonlinearity depends on symmetry and symmetries vanish in the presence of defects. Vacancy defects in centrosymmetric crystals and thin films are a well-known source of even-order optical nonlinearity, e.g. causing second harmonic …
View article: Optomechanical metamaterial nanobolometer
Optomechanical metamaterial nanobolometer Open
Bolometers are detectors of electromagnetic radiation that usually convert the radiation-induced change in temperature of the detector into electric signals. Temperature-dependent electrical resistance in semiconductors and superconductors…
View article: Toy model of harmonic and sum frequency generation in 2D dielectric nanostructures
Toy model of harmonic and sum frequency generation in 2D dielectric nanostructures Open
Optical nonlinearities of matter are often associated with the response of individual atoms. Here, using a toy oscillator model, we show that in the confined geometry of a two-dimensional dielectric nanoparticle a collective nonlinear resp…
View article: Toy model of harmonic and sum frequency generation in 2D nanostructures
Toy model of harmonic and sum frequency generation in 2D nanostructures Open
Optical nonlinearities of matter are often associated with the response of individual atoms. Here, using a toy oscillator model, we show that in the confined geometry of a two-dimensional dielectric nanoparticle a collective nonlinear resp…
View article: Metamaterial nanomachines driven by heat, sound, electric and magnetic fields, and light
Metamaterial nanomachines driven by heat, sound, electric and magnetic fields, and light Open
We review recent advances in the physics and technology of plasmonic and dielectric nanomechanical metamaterials, wherein optical and mechanical resonances can be coupled to provide a plethora of dynamic photonic functionalities. External …
View article: Dynamics of nanomechanical metamaterials: Pico-vibrometry with light and electron beams
Dynamics of nanomechanical metamaterials: Pico-vibrometry with light and electron beams Open
We report on the detection and quantitative mapping of picometre (sub-atomic) amplitude, thermal (phonon-induced) and driven movements in photonic nanostructures, using light and electron beams. These techniques enable measurements of the …
View article: Nanomechanical Photonic Metamaterials
Nanomechanical Photonic Metamaterials Open
The optical properties of materials are determined by the spatial arrangement of their building blocks and nanomechanical metamaterials can be actuated by temperature changes, electric and magnetic fields, light and ultrasound. This provid…
View article: Nanomechanical bistability in photonic metamaterial
Nanomechanical bistability in photonic metamaterial Open
A nanowire array decorated with plasmonic resonators acts as optically bistable device. The optical properties of this metamaterial exhibit hysteresis and bistability when it is driven by a piezo actuator across its mechanical resonance fr…
View article: Optical magnetic field sensing based on metamaterial nanomechanics
Optical magnetic field sensing based on metamaterial nanomechanics Open
We demonstrate an optical magnetic field sensor based on a metamaterial-microcavity. Actuation of the microcavity by the magnetic Lorentz force controls its reflectivity. Such sensors promise microscale spatial, sub-millisecond temporal an…
View article: Second harmonic generation by silicon metamaterial on a fibre tip
Second harmonic generation by silicon metamaterial on a fibre tip Open
Patterning of amorphous silicon with chevron grooves yields a metamaterial frequency converter with a resonant second harmonic conversion efficiency of ~10-11/W, exceeding the previously achieved value for silicon metamaterial by two order…
View article: Dataset for Second harmonic generation in amorphous silicon-on-silica metamaterial
Dataset for Second harmonic generation in amorphous silicon-on-silica metamaterial Open
Dataset supports: Xu, J., Plum, E., Savinov, V., & Zheludev, N. (2021). Second harmonic generation in amorphous silicon-on-silica metamaterial. APL Photonics.