Congratulations to Foozieh Sohrabi

Congratulations to Foozieh Sohrabi

  “Congratulations to Foozieh Sohrabi for getting Shahid Shahriyari Scholarship”

Clathrate colloidal crystals

Clathrate colloidal crystals

DNA-programmable assembly has been used to deliberately synthesize hundreds of different colloidal crystals spanning dozens of symmetries, but the complexity of the achieved structures has so far been limited to small unit cells.They assembled DNA-modified triangular bipyramids (~250-nanometer long edge, 177-nanometer short edge) into clathrate architectures. Electron microscopy images revealed that at least three different structures […]

Ultrasensitive detection of HIV-1 p24 antigen by a hybrid ...

Ultrasensitive detection of HIV-1 p24 antigen by a hybrid nanomechanical-optoplasmonic platform with potential for detecting HIV-1 at first week after infection

     Early detection of HIV infection is the best way to prevent spread of the disease and to improve the efficiency of the antiretroviral therapy. Nucleic acid amplification tests (NAAT) have become the gold-standard for detecting low-concentrations of the virus in blood. However, these methods are technically demanding and cost-prohibitive in developing countries. Immunoassays […]

Coherent Terahertz Radiation from Multiple Electron Beams ...

Coherent Terahertz Radiation from Multiple Electron Beams Excitation within a Plasmonic Crystal-like structure

Coherent terahertz radiation from multiple electron beams excitation within a plasmonic crystal-like structure (a three-dimensional holes array) which is composed of multiple stacked layers with 3 × 3 subwavelength holes array has been proposed in this paper. It has been found that in the structure the electromagnetic fields in each hole can be coupled with […]

Congratulations on publishing “Fabrication methods of plas...

Congratulations on publishing “Fabrication methods of plasmonic and magnetoplasmonic crystals: a review”.

Congratulations on publishing “Fabrication methods of plasmonic and magnetoplasmonic crystals: a review” in The European Physical Journal Plus.   This paper is written by Foozieh Sohrabi under the direct supervision of  Dr Seyedeh Mehri Hamidi. Abstract. In recent years, plasmonic crystals have embraced a wide range of applications from medical to optoelectronic ones due to […]

Lasing in dark and bright modes of a finite-sized plasmoni...

Lasing in dark and bright modes of a finite-sized plasmonic lattice

Lasing at the nanometre scale promises strong light-matter interactions and ultrafast operation. Plasmonic resonances supported by metallic nanoparticles have extremely small mode volumes and high field enhancements, making them an ideal platform for studying nanoscale lasing. At visible frequencies, however, the applicability of plasmon resonances is limited due to strong ohmic and radiative losses. Intriguingly, […]

Nanoscale rotator

Nanoscale rotator

The rotation of the polarization of light by magneto-optical materials is well exploited by macroscale devices such as optical isolators, however, demonstrations in nano-optics or plasmonics are lacking due to issues such as dissipation and phasematching. Now, Curtis Firby and colleagues from Canada have proposed an integrated magnetoplasmonic Faraday rotator. They predict 99.4% polarization conversion over an 830-μm-long device using low-loss modes that can propagate over […]

Dual-band infrared perfect absorber for plasmonic sensor b...

Dual-band infrared perfect absorber for plasmonic sensor based on the electromagnetically induced reflection-like effect

Liu and his colleagues present a scheme for realizing a narrow-dual-band perfect absorber based on the plasmonic analogy of the electromagnetically induced reflection (EIR)-like effect. In their scheme, two short gold bars are excited strongly by incident plane wave serving as the bright mode. The middle gold bar is excited by two short gold bars. […]

Plasmon-Induced Transparency in a Surface Plasmon Polarito...

Plasmon-Induced Transparency in a Surface Plasmon Polariton Waveguide with a Right-Angled Slot and Rectangle Cavity

  The phenomenon of plasmon-induced transparency (PIT) is realized a in surface plasmon polariton waveguide at near-infrared frequencies. The right-angled slot and rectangle cavity placed inside one of the metallic claddings are respectively utilized to obtain bright and dark modes in a typical bright-dark mode waveguide. A PIT transmission spectrum of the waveguide is generated […]

Nonlinear Plasmonic Sensing with Nanographene

Nonlinear Plasmonic Sensing with Nanographene

  Plasmons provide excellent sensitivity to detect analyte molecules through their strong interaction with the dielectric environment. Plasmonic sensors based on noble metals are, however, limited by the spectral broadening of these excitations. Yu and his colleagues identify a new mechanism that reveals the presence of individual molecules through the radical changes that they produce in […]

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