Abstract Polymeric fibres with small radii (such as 125 nm) are delicate to handle and should be laid down on a solid substrate obtain practical devices. However, placing these nanofibres commonly used glass substrates prevents them from guiding light. In this study, we numerically experimentally demonstrate that when the nanofibre is placed suitable dielectric multilayer, it supports guided mode, Bloch surface wave (BSW) confined in one dimension. The physical origin of new mode discussed...

Here, we demonstrate a diffraction-free Bloch surface wave sustained on all-dielectric multilayers that does not diffract after being passed through three obstacles or across single mode fiber. It can propagate in straight line for distances longer than 110 μm at wavelength of 633 nm and could be applied as an in-plane optical virtual probe both air aqueous environment. Its ability to used water, its long distance, tolerance multiple make this ideal certain applications areas such the...

Chemical synthesized silver nanowires have been proved to be the efficient architecture for Plasmonic waveguides, but high propagation loss prevents their widely applications. Here, we demonstrate that distance of plasmons along Ag NW can extended if was placed on a dielectric multilayer substrate containing photonic band gap, not commonly used glass substrate. The at 630 nm wavelength reach 16 um even is as thin 90 in diameter. Experimental and simulation results further show polarization...

Photonic and plasmon-coupled emissions present new opportunities for control on light emission from fluorophores, have many applications in the physical biological sciences. The mechanism of influencing factors coupling between fluorescent molecules plasmon and/or photonic modes are active areas research. In this paper, we describe a hybrid photonic-plasmonic structure that simultaneously contains two modes: surface plasmons (SPs) Tamm (TPs), both which can modulate fluorescence emission....

Abstract Circularly polarized light (CPL) is considered to be a true chiral entity and has been suggested as an explanation for the introduction of initial biases into key biomolecular building blocks. CPL used recently asymmetric photochemical reactions wavelengths mainly in UV visible regions, whereas natural observed star‐forming regions Orion constellation falls IR region. Whether or near‐IR region could utilized trigger remains determined. Herein, it demonstrated that enantioselective...

We calculated the angle-dependent reflectivity of a Tamm structure, which demonstrates effect Ag film thickness on excitation surface plasmons and plasmons.

Except for the commonly used surface plasmon polaritons (SPPs), in this letter we demonstrate that waveguide modes (WMs) can realize large area sub-wavelength gratings. Both transverse-magnetic (TM) and transverse-electric polarized beams be method, while lithography based on SPPs only TM beam is applicable. The WMs interference has advantages of low heat loss much suitable thick photo-resist films. Large gratings were inscribed azo polymer film at period 187 nm 189 nm, which are smaller...

Programmable materials and reconfigurable photonic components, which can change their physicochemical properties functionalities upon external stimuli, are a major topic of interest in modern science. However, most conventional components rely heavily on mechanical deformation, restricting application. Herein, novel strategy based dynamically tunable fluorescence resonance energy transfer process to design fabricate programmable fluorescent micropatterns within single polymer microfiber is...

A high effective surface enhanced Raman scattering (SERS) substrate is experimentally demonstrated, which composed of silver nano-cubes on a grating. The control experiments show that the intensity signals from this about 15.6 times as recently proposed Ag an film. mechanism better performance in SERS discussed viewpoint plasmonic interaction between and grating can generate more hot-spots. influence NCs' concentration detection ability are also investigated.

Metal nanostructures (such as plasmonic antennas) have been widely demonstrated to be excellent devices for beaming and sorting the fluorescence emission. These effects rely on constructive scattering or diffraction from different elements metal corrugations nanorings) of nanostructures. However, subwavelength-size nanoholes, without nearby nanoscale features, results in an angularly dispersed emission distal surface. Herein, we demonstrate first time redirection capabilities a single...

Abstract The unique optical properties of Tamm plasmons (TPs) – such as flexible wavevector matching conditions including inplane within the light line, and existing both S‐ P‐polarized TPs − facilitate them for direct excitation. plasmon‐coupled emission (TPCE) from a combined photonic–plasmonic structure sustaining surface (SPs) is described in this paper. sensitivity TPCE to wavelength polarization examined with back focal plane imaging verified numerical calculations. results reveal that...

In this letter, we propose a new method for selective imaging of surface bound probes or simultaneous plus fluorescence from dye molecules in bulk water solution. The principle relies on use two optical modes with different mode distributions, filed decay lengths and polarization states that are sustaining plasmon waveguide. couple regions, at distances the PCW-water interface. emission regions occur as coupled rings polarizations emitting angles back focal plane (BFP) images. By using an...

We demonstrate that Metal-Dielectric Waveguide structures (MDWs) with high efficiency of fluorescence coupling can be suitable as substrates for imaging. This hybrid MDWs consists a continuous metal film and dielectric top layer. The optical modes sustaining inside this structure excited numerical aperture (N.A) objective, then focused into virtual probe intensity, leading to efficient excitation fluorophores deposited on the MDWs. emitted couple thus enabling directional emission, which is...

We numerically and experimentally demonstrate that a polymer film-coated one-dimensional photonic crystal (1DPC) can sustain transverse electric (TE) polarized modes without the limit of guided layer's thickness. Our results indicate two propagating are existing inside film, first one is TE Bloch surface wave, second mode. Here in, evolution these with change in film thickness presented. numerical simulation well-agreement experimental data obtained using back focal plane imaging.

A novel fluorescence emission difference method is proposed to improve the lateral resolution of SPCEM without increasing instrument complexity. We discovered profile transverse PSF in will dramatically change from a hollow spot solid spot, when axial position sample varies within one wavelength vicinity focal plane. The subtraction an image whose and with greatly enhance contrast images. mechanism distinctive demonstrated through basic optics theories, improvement verified by theoretical...

Conventional surface plasmons (SPs) or Bloch waves (BSWs) have a wave vector exceeding that of light in vacuum, and, therefore, the plasmon-coupled emission (SPCE) wave-coupled (BSWCE) cannot escape from corresponding structures. With aid high-refractive-index prism an oil-immersion objective, SPCE BSWCE can be coupled into free space. But large volumes and objective are certainly unfavorable for miniaturization optical systems inconvenient applications such as displays. Here we...

A dark-field imaging technique taking advantage of the active polymer slab waveguide (APSW) is experimentally investigated. The dye molecules (Rhodamine 6G, Rh6G) are doped in film for launching surface waves on APSW, such as plasmon polaritons Ag–polymer–air interface, evanescent fields at polymer–air interface by total internal reflection, or guided modes. localized will not radiate into far-field space directly. When specimens placed these be scattered to region, which forms image...

Leakage radiation microscopy (LRM) is used to investigate the optical properties of surfaces. The front-focal plane (FFP) image with LRM reveals structural features on Back-focal (BFP) angular distribution radiation. Herein we experimentally demonstrate that out-of-focal (OFP) images present a link between FFP and BFP provide information cannot be resolved by either or images. OFP provides linkage spatial location emission from same location, thus about film's discontinuity, nonuniformity...

By using a prism of high refractive index, free-space cylindrical vector beams can be selectively converted into confined optical fields with large area, such as surface plasmon polaritons or waveguide modes, whose interference will produce features at the nanometer scale. Due to polarization sensitivity these macroscopic distribution field dynamically manipulated through an electronically driven liquid crystal. Based on phenomena, promising maskless nanolithography is proposed and...

Laser scanning confocal fluorescence microscopy (LSCM) is now an important method for tissue and cell imaging when the samples are located on surfaces of glass slides. In past decade, there has been extensive development nano-optical structures that display unique effects incident transmitted light, which will be used with novel configurations medical consumer products. For these applications, it necessary to characterize light distribution within short distances from efficient detection...

In this letter, a plasmonic dark field microscopy taking advantages of the polymer loaded surface plasmon polariton waveguide (PLSPPW) is experimentally demonstrated. The dye molecules (Rhodamine 6G, Rh6G) are doped in PLSPPW to launch waves or guided waves. Due localized property these waves, near-field optical energy on can be scattered into far-field only presence objects. scattering signals then form dark-field image proposed technique just utilizes chip-scale integrated multilayered...

In this letter, we demonstrate a novel diffraction-free Bloch surface wave (DF-BSW) sustained on all-dielectric multilayers that does not diffract after being passed through three obstacles or across single mode fiber. It can propagate in straight line for distances longer than 110 {\mu}m at wavelength of 633 nm and could be applied as an in-plane optical virtual probe, both air aqueous environment. The ability to used water, its long distance, tolerance multiple make DF-BSW ideal certain...