scholarly journals Enhanced fluorescence emission using a photonic crystal coupled to an optical cavity

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
Anusha Pokhriyal ◽  
Meng Lu ◽  
Vikram Chaudhery ◽  
Sherine George ◽  
Brian T. Cunningham
Keyword(s):  
Photonic Crystal ◽  
Optical Cavity ◽  
Fluorescence Emission ◽  
Enhanced Fluorescence

scholarly journals Enhanced fluorescence emission using a photonic crystal coupled to an optical cavity

2013 ◽  
Vol 102 (22) ◽  
pp. 221114 ◽  
Author(s):  
Anusha Pokhriyal ◽  
Meng Lu ◽  
Vikram Chaudhery ◽  
Sherine George ◽  
Brian T. Cunningham
Keyword(s):  
Photonic Crystal ◽  
Optical Cavity ◽  
Fluorescence Emission ◽  
Enhanced Fluorescence

Enhanced fluorescence emission from quantum dots on a photonic crystal surface

2007 ◽  
Vol 2 (8) ◽  
pp. 515-520 ◽  
Author(s):  
Nikhil Ganesh ◽  
Wei Zhang ◽  
Patrick C. Mathias ◽  
Edmond Chow ◽  
J. A. N. T. Soares ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photonic Crystal ◽  
Crystal Surface ◽  
Fluorescence Emission ◽  
Enhanced Fluorescence

Enhanced fluorescence emission using bound states in continuum in a photonic crystal membrane

2017 ◽  
Author(s):  
S. Romano ◽  
G. Zito ◽  
S. Managò ◽  
E. Penzo ◽  
S. Dhuey ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Bound States ◽  
Fluorescence Emission ◽  
Enhanced Fluorescence ◽  
Photonic Crystal Membrane

Enhanced-Fluorescence of a Dye on DNA- assembled Gold Nano-Dimers Discriminated by Lifetime Correlation Spectroscopy

2017 ◽  
Author(s):  
Pedro M. R. Paulo ◽  
David Botequim ◽  
Agnieszka Jóskowiak ◽  
Sofia Martins ◽  
Duarte M. F. Prazeres ◽  
...  
Keyword(s):  
Single Molecule ◽  
Fluorescence Emission ◽  
Directed Assembly ◽  
Plasmon Mode ◽  
Correlation Spectroscopy ◽  
Enhanced Fluorescence ◽  
Detection Volume ◽  
Relaxation Component ◽  
Good Agreement ◽  
Confocal Detection

<div> <div> <div> <p>We have employed DNA-directed assembly to prepare dimers of gold nanoparticles and used their longitudinally coupled plasmon mode to enhance the fluorescence emission of an organic red-emitting dye, Atto-655. The plasmon- enhanced fluorescence of this dye using dimers of 80 nm particles was measured at single molecule detection level. The top enhancement factors were above 1000-fold in 71% of the dimers within a total of 32 dimers measured, and, in some cases, they reached almost 4000-fold, in good agreement with model simulations. Additionally, fluorescence lifetime correlation analysis enabled the separation of enhanced from non-enhanced emission simultaneously collected in our confocal detection volume. This approach allowed us to recover a short relaxation component exclusive to enhanced emission that is attributed to the interaction of the dye with DNA in the interparticle gaps. </p> </div> </div> </div>

scholarly journals A Nanoscale Photonic Crystal Cavity Optomechanical System for Ultrasensitive Motion Sensing

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 462
Author(s):  
Ji Xia ◽  
Fuyin Wang ◽  
Chunyan Cao ◽  
Zhengliang Hu ◽  
Heng Yang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Cavity ◽  
Optical Quality ◽  
Optical Force ◽  
Mechanical Oscillator ◽  
Maximum Displacement ◽  
Optomechanical System ◽  
High Optical Quality ◽  
Hybrid Platform ◽  
Optomechanical Coupling

Optomechanical nanocavities open a new hybrid platform such that the interaction between an optical cavity and mechanical oscillator can be achieved on a nanophotonic scale. Owing to attractive advantages such as ultrasmall mass, high optical quality, small mode volume and flexible mechanics, a pair of coupled photonic crystal nanobeam (PCN) cavities are utilized in this paper to establish an optomechanical nanosystem, thus enabling strong optomechanical coupling effects. In coupled PCN cavities, one nanobeam with a mass meff~3 pg works as an in-plane movable mechanical oscillator at a fundamental frequency of . The other nanobeam couples light to excite optical fundamental supermodes at and 1554.464 nm with a larger than 4 × 104. Because of the optomechanical backaction arising from an optical force, abundant optomechanical phenomena in the unresolved sideband are observed in the movable nanobeam. Moreover, benefiting from the in-plane movement of the flexible nanobeam, we achieved a maximum displacement of the movable nanobeam as 1468 . These characteristics indicate that this optomechanical nanocavity is capable of ultrasensitive motion measurements.

PEGylated AIEgen Molecular Probe for Hypoxia-Mediated Tumor Imaging and Photodynamic Therapy

2021 ◽  
Author(s):  
Jun Li ◽  
Wei Liu ◽  
Zhuhao Li ◽  
Yingcai Hu ◽  
Jinfeng Yang ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Tumor Imaging ◽  
Fluorescence Emission ◽  
Molecular Probe ◽  
Enhanced Fluorescence ◽  
High Concentrations

Unlike the aggregation caused quenching (ACQ) and reduced singlet oxygen (1O2) production of traditional photosensitizers at high concentrations, AIEgen photosensitizers show enhanced fluorescence emission and photosensitization ability in the aggregated...

Photonic crystals: A platform for label-free and enhanced fluorescence biomolecular and cellular assays

2008 ◽  
Vol 1133 ◽  
Author(s):  
Brian T. Cunningham ◽  
Leo Chan ◽  
Patrick C. Mathias ◽  
Nikhil Ganesh ◽  
Sherine George ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
High Throughput Screening ◽  
High Sensitivity ◽  
Excitation Wavelength ◽  
Label Free ◽  
Crystal Surfaces ◽  
Enhanced Fluorescence ◽  
Preferred Direction ◽  
Label Free Detection

Abstract Photonic crystal surfaces represent a class of resonant optical structures that are capable of supporting high intensity electromagnetic standing waves with near-field and far-field properties that can be exploited for high sensitivity detection of biomolecules and cells. While modulation of the resonant wavelength of a photonic crystal by the dielectric permittivity of adsorbed biomaterials enables label-free detection, the resonance can also be tuned to coincide with the excitation wavelength of common fluorescent tags - including organic molecules and semiconductor quantum dots. Photonic crystals are also capable of efficiently channeling fluorescent emission into a preferred direction for enhanced extraction efficiency. Photonic crystals can be designed to support multiple resonant modes that can perform label free detection, enhanced fluorescence excitation, and enhanced fluorescence extraction simultaneously on the same device. Because photonic crystal surfaces may be inexpensively produced over large surface areas by nanoreplica molding processes, they can be incorporated into disposable labware for applications such as pharmaceutical high throughput screening. In this talk, the optical properties of surface photonic crystals will be reviewed and several applications will be described, including results from screening a 200,000-member chemical compound library for inhibitors of protein-DNA interactions, gene expression microarrays, and high sensitivity of protein biomarkers.

scholarly journals Plasmonic zero mode waveguide for highly confined and enhanced fluorescence emission

Nanoscale ◽  
2018 ◽  
Vol 10 (36) ◽  
pp. 17362-17369 ◽  
Author(s):  
Paolo Ponzellini ◽  
Xavier Zambrana-Puyalto ◽  
Nicolò Maccaferri ◽  
Luca Lanzanò ◽  
Francesco De Angelis ◽  
...  
Keyword(s):  
Single Molecule ◽  
Experimental Verification ◽  
Zero Mode ◽  
Fluorescence Emission ◽  
Enhanced Fluorescence

Experimental verification of a plasmonic zero mode waveguide able to enhance fluorescence from a single molecule in a confined volume.

Sign in / Sign up

Export Citation Format

Share Document