We report on the strong polarization dependence of plasmon-enhanced fluorescence single gold nanorods. The from organic fluorophores that are embedded in a mesostructured silica shell around individual nanorods is enhanced by longitudinal plasmon resonance Our electrostatic calculations show under an off-resonance excitation, electric field intensity contour nanorod rotates away length axis as excitation varied. ascribed to averaged enhancement within polarization. measured factor very good...

We show that the fluorescence emission from individual hybrid nanostructures composed of Au nanorod cores and oxazine 725-embedded mesostructured silica shells is strongly polarized, with degree polarization being equal to light scattered by varying 0 1 as longitudinal plasmon resonance wavelength increased. Our analyses indicate interactions excitation processes fluorophores are temporally separated under unsaturated conditions. The found through electrodynamic calculations arise...

Abstract In this paper, we present a novel broadband bandpass filter based on spoof surface plasmon polaritons (SSPPs) in the microwave frequency band. The proposed includes three parts: (1) coplanar waveguide (CPW); (2) matching transition; and (3) coupled structure that is an asymmetric constructed by five grooved strips. realizes excellent low loss performance from 7 to 10 GHz, which its insertion around 1.5 dB same Meanwhile, has good band stop characteristic 3 GHz. A simple but accurate...

The localized plasmons of metal nanocrystals have been widely utilized to control a variety optical signals, such as Raman, fluorescence, and circular dichroism, from proximal dye molecules. We show, on the single-particle level, that Förster resonance energy transfer between two different fluorophores can be modulated by adjacent plasmonic nanocrystals. donor acceptor fluorophore molecules are embedded in mesostructured silica shell is uniformly coated Au–Ag core–shell longitudinal plasmon...

In this paper, an all-metal nanostructure is designed with a large frequency ratio (∼6) and bandwidth (∼32), consists of period slit-box cavities nanodisk clusters. It nearly perfect absorber at 1.064 μm to achieve laser stealth, frequency-selective emitter low emissivity in wavelength ranges 3-5 8-14 infrared also near unity 2.709 6.107 compensate for the decrease radiation heat transfer owing emissivity. The absorption/emission peaks are all Lorentzian shape, bandwidths, defined as full...

Both the excitation and emission processes of a fluorescent molecule positioned near noble metal nanocrystal can interact strongly with localized surface plasmon resonance nanocrystal. While effects this plasmon–fluorophore interaction on intensity, polarization, direction fluorescence have been intensively investigated, plasmonic effect spectrum has barely explored. We show, single-particle level, that Au nanorods alter spectral profile from adjacent molecules. The molecules are embedded in...

A novel dynamic stretchable and self-healable supercapacitor based on a CNT@graphene@PANI composite film was fabricated. The can operate under different static bending angles conditions with frequencies, the capacitance barely affected.

Multiband metamaterial perfect absorbers (MPAs) have promising applications in many fields like microbolometers, infrared detection, biosensing, and thermal emitters. In general, the single resonator can only excite a fundamental mode achieve absorption band. The multiband MPA be achieved by combining several different sized resonators together. However, it's still challenging to design with bands of more than four average absorptivity 90% due interaction between differently resonators. this...

Plasmonic switches are fabricated by embedding both Au nanorods and photochromic molecules in mesostructured silica thin films on glass slides. The switching is realized single the basis of plasmonic–molecular resonance coupling between absorbing form dye. Detailed facts importance to specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted authors. Please note: publisher responsible for content...

Channel modeling of a plasma sheath for hypersonic reentry vehicles is important in addressing communication blackout issues. Given that the time-varying property transmission medium caused by physical factors such as large-scale flight conditions variation, especially angle attack, and small-scale fluid turbulence, new adaptive multistate Markov channel method proposed to present dynamic effects sheaths on wireless channels. First, quasi-Gaussian function mathematical model electron density...

In this letter, a coplanar waveguide (CPW) filter based on spoof surface plasmon polaritons (SSPPs) in the microwave frequency band is proposed, which can achieve multi-band transmission by using periodic holes etched middle line of CPW. Compared to conventional SSPP designs, proposed SSPP-based removes gradual structure for mode conversion. Simultaneously, efficiency high-order modes obviously improved employing both side grounds The physical mechanism explained with aid dispersion curves...

A wideband dual-polarized omnidirectional antenna is proposed for mobile communication base station and 2.4 GTIz wireless local area network applications. An integrated design achieved by combining an inverted-cone monopole vertical polarization (VP) a modified cross bow-tie dipole horizontal (TIP). The has compact size because the TIP element acts as radiating ground plane VP simultaneously. antennas are excited 50 Ω Sub-Miniature-A connector broadband feeding network, respectively. overall...

ABSTRACT To meet the requirement of band selection performance and low loss in wireless communication system, a wide stopband bandpass filter with higher‐order mode suppression is proposed this paper. The utilizes high‐pass characteristic Half Mode Substrate Integrated Waveguide (HMSIW) to produce lower stop‐band. A quarter‐wavelength resonator used generate transmission zero at upper band. Thus, effect realized from 3.4 5.6 GHz. 3 dB relative bandwidth reaches 46.7%, in‐band insertion less...

Rydberg-state excitation of atoms in strong infrared laser fields provides a new complementary aspect the perspective atom--strong field interactions. In this article, we perform an experimental and theoretical study on corresponding process diatomic molecules, ${\mathrm{N}}_{2}$ ${\mathrm{O}}_{2}$. We show that neutral molecules can also survive 800-nm high Rydberg states, while their behavior is remarkably different comparison with companion atoms, Ar Xe. The generally behaves similarly to...

An efficient method to split spoof surface plasmon polaritons (SSPPs) different directions is proposed by designing a low-loss SSPP waveguide in an ultrawide frequency band. For this purpose, coplanar-waveguide-based structure with double-row hole arrays etched on its middle line first studied, which can be easily used the waves. Based method, Y-shaped -3 dB power divider and application Mach-Zehnder interferometer are presented. The experiment demonstrates that splits waves effectively...

An electronically large planar antenna with wideband illumination retrieves 3-D microwave image high resolution. Cross multi-input-multi-output (MIMO) topology is commonly used to produce the effective array at a reasonable cost and complexity. However, imaging algorithm for monostatic will cause distortion dispersion in near range applications. In this paper, an efficient precise by cross MIMO proposed. The integrals over transmitting receiving arrays are carried out wavenumber domain...

In this paper, a band-pass filter based on the spoof surface plasmon polaritons (SSPPs) and coplanar waveguide (CPW)-based coupling structure is proposed. The design concept of proposed to use SSPP CPW-based for controlling high cut-off frequency filtering low-frequency wave, respectively, which means that low frequencies can be independently controlled. physical mechanism explained with aid dispersion curves, electric field distributions, equivalent circuits. Moreover, parametric studies...

An ultra-wideband metamaterial absorber is developed, which polarized-insensitive and angular-stable. Three layers of square resistive films comprise the proposed metamaterial. The optimal values geometric parameters are obtained, such that designed can achieve an ultra-broadband absorption response from 4.73 to 39.04 GHz (relative bandwidth 156.7%) for both transverse electricity magnetic waves. Moreover, impedance matching theory equivalent circuit model utilized mechanism analysis....