Abstract Structured illumination microscopy (SIM) is one of the most powerful and versatile optical super-resolution techniques. Compared with other methods, SIM has shown its unique advantages in wide-field imaging high temporal resolution low photon damage. However, traditional only about 2 times spatial improvement compared to diffraction limit. In this work, we propose experimentally demonstrate an easily-implemented, low-cost method extend SIM, named speckle metamaterial-assisted...

Abstract A new type of optical microscopy based on hyperbolic polariton-coupled emission (HPCE) is demonstrated. By employing metamaterials as the substrate, we show a nearly 6-fold increase in fluorescence intensity HPCE microscope compared to total internal reflection (TIRF) glass substrates. Moreover, achieve precise, time-dependent control by modulating incidence angle with galvo scanner. This tunability offers extensive potential for applications super-resolution and high-sensitivity...

Abstract Enhanced Kerr nonlinearities are observed in metamaterials such as conducting oxides and doped inorganic semiconductor thin films showing epsilon‐near‐zero (ENZ) response the infrared region. However, to achieve ENZ visible, artificial with more complex nanostructures have be specifically designed. Here, using sodium [5,6‐dichloro‐2‐[[5,6‐dichloro‐1‐ethyl‐3‐(4‐sulphobutyl)‐benzimidazol‐2‐ylidene]‐propenyl]‐1‐ethyl‐3‐(4‐sulphobutyl)‐benzimidazolium hydroxide]...

Abstract Fluorescence super-resolution microscopy has, over the last two decades, been extensively developed to access deep-subwavelength nanoscales optically. Label-free technologies however have only achieved a slight improvement compared diffraction limit. In this context, we demonstrate label-free imaging method, i.e., hyperbolic material enhanced scattering (HMES) nanoscopy, which breaks limit by tailoring light-matter interaction between specimens and substrate. By exciting highly...

Resonantly excited surface plasmon polaritons at the metal–dielectric interface have revolutionized optical applications, including bioimaging, chemical sensing, and miniaturized photonic devices. However, their use is limited by challenges, such as tunability, constraints in strong field confinement, losses, wavelength restrictions. Organic excitonic materials emerged promising candidates for addressing these issues. In this study, we demonstrate that organic films can support exciton...

Imaging and sensing technologies are crucial in various fields, encompassing applications cell tissue analysis, DNA RNA characterization, food drug composition forensic science. Instead of using complex heavy conventional instruments to perform these analyses, lightweight, portable, field-ready have recently become commercially available. In this study, a miniature attenuated total internal reflectance fluorescence (mini-ATIRF) microscope has been demonstrated 3D printer. By utilizing...

Metallic nanostructures permit controlling various photophysical processes by coupling photons with plasmonic oscillation of electrons confined in the tailored nanostructures. One example is hyperbolic metamaterial (HMM) leading to an enhanced spontaneous emission rate emitters located nearby. Noting that organic molecules from either π-π* or intramolecular charge-transfer (ICT) states, we address here how HMM modifies ICT spectral features comparing them a shift dependent on local polarity...

The past several decades have witnessed rapid development of high-intensity, ultrashort pulse lasers, enabling deeper laboratory investigation nonlinear optics, plasma physics, and quantum science technology than previously possible. Naturally, with their increasing use, the risk accidental damage to optical detection systems rises commensurately. Thus, various limiting mechanisms devices been proposed. However, restricted by weak nonlinearity natural materials, state-of-the-art limiters...

Abstract The dynamics of photons in fluorescent molecules plays a key role fluorescence imaging, optical sensing, organic photovoltaics, and displays. Photobleaching is an irreversible photodegradation process fluorophores, representing fundamental limitation relevant applications. Chemical reagents are used to suppress the photobleaching rate but with exceptionally high specificity for each type fluorophore. Here, using hyperbolic materials (OHMs), platform achieve unprecedented fluorophore...

Determining the axial position of an emitter with nanoscale precision is critical to a fundamental imaging methodology. While there are many advanced optical techniques being applied high-resolution imaging, high-axial-resolution topography living cells particularly challenging. Here, we present application metamaterial-assisted photobleaching microscopy (MAPM) high-axial resolution characterize morphological properties cells. Quantitative changes in morphology live obtained by topographic...

Abstract Single-molecule localization microscopies have gained much attention for their efficient realization of a sub-diffraction-limit imaging with the resolution down to 10-nm range. In contrast conventional microscopes, which rely on particular fluorescent probes in specific conditions, metamaterial-assisted super-resolution can be implemented any dye under general conditions. Here, we present systematic study fluorescence engineering metamaterial assisted microscopy by using cyclic...

Abstract Recent advancements in optical metamaterials have opened new possibilities the exciting field of super‐resolution microscopies. The far‐field metamaterial‐assisted illumination nanoscopies (MAINs) have, very recently, enhanced lateral resolution to one‐fifteenth wavelength. However, axial localization accuracy fluorophores MAINs remains rarely explored. Here, a MAIN with nanometer‐scale is demonstrated by monitoring distance‐dependent photobleaching dynamics on top an organic...

Localized plasmonic structured illumination microscopy (LPSIM) is a super-resolution fluorescent method to image samples at high speed with wide field of view and low phototoxicity. Here we propose methodology extend the resolution capability LPSIM by shifting spatial frequencies farther away from diffraction-limited cutoff frequency nano-array. We analyze performance accuracy reconstruction using simulations standard (SIM) blind-LPSIM. experiments were also performed various substrates...

The strongly enhanced and confined subwavelength optical fields near plasmonic nanoantennas have been extensively studied not only for the fundamental understanding of light–matter interactions at nanoscale but also their emerging practical application in second harmonic generation, improved inelastic electron tunneling, harvesting solar energy, photocatalysis. However, owing to deep nature field confinement, conventional imaging techniques are incapable characterizing performance these...

Materials with hyperbolic dispersion are the key to a variety of photonic applications involving nanoimaging, hyper-lensing, and spontaneous emission engineering, due availability high k modes. Here we demonstrate that spin-coated polycrystalline organic semiconducting films layered molecular packing structure can exhibit over wide spectral range support presence surface excitonic polaritons. This was evidenced from 670 920 nm is related negative real part dielectric permittivity selected...

Hyperbolic media strengthen numerous attractive applications in optics such as super-resolution imaging, enhanced spontaneous emission, and nanoscale waveguiding. Natural hyperbolic materials exist at visible frequencies; however, implementations of these suffer substantial compromises resulting from the high loss currently available candidates. Here, first experimental theoretical investigation regioregular poly(3-alkylthiophenes) (rr-P3ATs), a naturally low-loss organic material (OHM)...

Resolution capability of the linear structured illumination microscopy (SIM) plays a key role in its applications physics, medicine, biology, and life science. Many advanced methodologies have been developed to extend resolution by using subdiffraction-limited optical excitation patterns. However, obtaining SIM images with beyond 40 nm at visible frequency remains as an insurmountable obstacle due intrinsic limitation spatial bandwidth involved materials complexity system. Here, low-loss...

In this study, we observed that the photoluminescence (PL) intensity of ZnO/Ag nanogratings was significantly enhanced compared with a planar counterpart under illumination both transverse magnetic (TM) and electric (TE)-mode light. TM mode, angle-resolved reflectance spectra exhibited dispersive dips, indicating cavity resonance as well grating-coupled surface plasmon polariton (SPP) excitation. TE only allowed, broad dips appeared in spectra. Strong optical field confinement ZnO layers,...

Electro-optic switching of refraction is experimentally demonstrated in a phase-discontinuity complementary metasurface twisted nematic cell. The fabricated by focused-ion-beam milling, and cell constructed with V-shape slot antenna metasurface. By application an external voltage, achieved between ordinary extraordinary satisfying the generalized Snell's law. It has strong implication for applications spatial light modulation wavelength division multiplexer/demultiplexer near-IR spectral range.

By embedding four-rod resonators inside a double-split ring resonator superlattice, planar composite metamaterial possessing tripod plasmonic resonances is fabricated. Double Fano are observed where common subradiant driven oscillator coupled with two superradiant oscillators. As classical analogue of four-level atomic system, the extinction spectrum exhibits coherent effect based on double resonances. Transfer absorbed power between orthogonal oscillators shown to be mediated by oscillator.

By focused ion beam milling, we fabricated near-IR reflective metamaterials consisting of nano-aperture arrays. Optimum parameters current and accelerating voltage in the fabrication process are obtained. Nano-apertures constituting metamaterial successfully milled, possess a resonance spectral range. With double-split-ring resonator structure for nano-aperture, intensity reflection at is rendered polarization dependent. It found that point group symmetry array determines amount anisotropy...

THz metamaterials are employed to examine changes in the meta-resonances when two anisotropic organic materials, liquid crystal and carbon nanotubes, placed on top of metamaterials. In both double split-ring resonators isotropic four-fold symmetric resonators, interactions between electric field materials enhanced vicinity meta-resonances. crystal, meta-resonance frequency shift is observed with magneto-optical coupling giving rise largest shift. nanotube, absorptions, parallel perpendicular...

Electric switching of reflection resonances at near-IR spectral range is experimentally demonstrated in a reflective metamaterial twisted nematic liquid crystal cell. Reflective composed nano-sized double-split ring resonator aperture fabricated by focused ion beam milling. Two-fold rotational symmetry resonators allows for two orthogonal polarization-dependent the metamaterial. With an external voltage 10V across 12μm cell gap, full achieved between resonances. Dynamic measurements show...

The past two decades have witnessed a dramatic progress in the development of novel super-resolution fluorescence microscopy technologies. Here, we report new imaging method, called metamaterial-assisted photobleaching (MAPM), which possesses nanometer-scale axial resolution and is suitable for broadband operation across entire visible spectrum. kinetics fluorophores can be greatly modified via separation-dependent energy transfer process to nearby metamaterial. corresponding rate thus...