Repulsion of polarized particles near a magneto-optical metamaterial

Girón-Sedas, J. A.; Mejía‐Salazar, J. R.; Granada, J. C.; Oliveira, Osvaldo N.

doi:10.1103/physrevb.94.245430

Cited by 10 publications

(7 citation statements)

References 32 publications

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“…Even then, the effect is inherently narrowband due to physical constraints: any frequency at which the permittivity is zero must be a point of high dispersion. A similar repulsion was proposed via the use of magneto-optical materials, with a limited bandwidth and requiring external magnets [10].…”

Section: Introductionmentioning

confidence: 86%

Repulsion of polarized particles from two-dimensional materials

2018

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Repulsion of nanoparticles, molecules, and atoms from surfaces can have important applications in nanomechanical devices, microfluidics, optical manipulation, and atom optics. Here, through the solution of a classical scattering problem, we show that a dipole source oscillating at a frequency ω can experience a robust and strong repulsive force when its near-field interacts with a two-dimensional material. As an example, the case of graphene is considered, showing that a broad bandwidth of repulsion can be obtained at frequencies for which propagation of plasmon modes is allowed 0

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Section: Introductionmentioning

confidence: 86%

Repulsion of polarized particles from two-dimensional materials

2018

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“…The synergistic use of optics and microfluidics can enable new functionalities without loss of integrability or compactness [111]. In particular, optical forces for non-contact particle manipulation, sorting, and analysis [112][113][114][115][116][117] could provide a route to apply microfluidic drug delivery and screening [14] in chiral enantiopure pharmaceutics. This is desired to avoid toxicity, with improved excretion and potency [118].…”

Section: Summary Outlook and Challengesmentioning

confidence: 99%

Microfluidic Point-of-Care Devices: New Trends and Future Prospects for eHealth Diagnostics

Mejía‐Salazar

Cruz

Vásques

et al. 2020

Sensors

145

111

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Point-of-care (PoC) diagnostics is promising for early detection of a number of diseases, including cancer, diabetes, and cardiovascular diseases, in addition to serving for monitoring health conditions. To be efficient and cost-effective, portable PoC devices are made with microfluidic technologies, with which laboratory analysis can be made with small-volume samples. Recent years have witnessed considerable progress in this area with “epidermal electronics”, including miniaturized wearable diagnosis devices. These wearable devices allow for continuous real-time transmission of biological data to the Internet for further processing and transformation into clinical knowledge. Other approaches include bluetooth and WiFi technology for data transmission from portable (non-wearable) diagnosis devices to cellphones or computers, and then to the Internet for communication with centralized healthcare structures. There are, however, considerable challenges to be faced before PoC devices become routine in the clinical practice. For instance, the implementation of this technology requires integration of detection components with other fluid regulatory elements at the microscale, where fluid-flow properties become increasingly controlled by viscous forces rather than inertial forces. Another challenge is to develop new materials for environmentally friendly, cheap, and portable microfluidic devices. In this review paper, we first revisit the progress made in the last few years and discuss trends and strategies for the fabrication of microfluidic devices. Then, we discuss the challenges in lab-on-a-chip biosensing devices, including colorimetric sensors coupled to smartphones, plasmonic sensors, and electronic tongues. The latter ones use statistical and big data analysis for proper classification. The increasing use of big data and artificial intelligence methods is then commented upon in the context of wearable and handled biosensing platforms for the Internet of things and futuristic healthcare systems.

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“…Indeed, externally applied magnetic fields can be used to control the optical chirality of magnetoplasmonic surfaces. [151][152][153] Significantly, the combination of magnetically controlled optical forces [154][155][156] and switchable optical chirality in magnetoplasmonic surfaces [151][152][153] is promising for enantioselective optical trapping and sensing chiral samples up to the single-molecule level. For example, the switching of extrinsic optical chirality by applied magnetic fields was recently demonstrated using a magnetoplasmonic device.…”

Section: Hybrid and Novel Magnetoplasmonic Materialsmentioning

confidence: 99%

“…Effective approaches for magnetoplasmonic enantioselective chiral trapping (separation) and sensing, even up to the single-molecule level, can be envisaged by merging these last concepts, which is of prime importance for the pharmaceutical industry. 157 On the other hand, for the in-plane magnetization configuration, improved gradient electric 154 and magnetic 156 optical forces have been demonstrated. The top panel on the left side of Fig.…”

Section: Journal Of Applied Physicsmentioning

confidence: 99%

Magnetophotonics for sensing and magnetometry toward industrial applications

Rizal¹,

Manera

Ignatyeva

et al. 2021

Journal of Applied Physics

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Magnetic nanostructures sustaining different types of optical modes have been used for magnetometry and label-free ultrasensitive refractive index probing, where the main challenge is the realization of compact devices that are able to transfer this technology from research laboratories to smart industry. This Perspective discusses the state-of-the-art and emerging trends in realizing innovative sensors containing new architectures and materials exploiting the unique ability to actively manipulate their optical properties using an externally applied magnetic field. In addition to the well-established use of propagating and localized plasmonic fields, in the so-called magnetoplasmonics, we identified a new potential of the all-dielectric platforms for sensing to overcome losses inherent to metallic components. In describing recent advances, emphasis is placed on several feasible industrial applications, trying to give our vision on the future of this promising field of research merging optics, magnetism, and nanotechnology.

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Repulsion of polarized particles near a magneto-optical metamaterial

Cited by 10 publications

References 32 publications

Repulsion of polarized particles from two-dimensional materials

Repulsion of polarized particles from two-dimensional materials

Microfluidic Point-of-Care Devices: New Trends and Future Prospects for eHealth Diagnostics

Magnetophotonics for sensing and magnetometry toward industrial applications

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