Resolving Sub-Diffraction Limit Encounters in Nanoparticle Tracking Using Live Cell Plasmon Coupling Microscopy

Rong, Guoxin; Wang, Hongyun; Skewis, Lynell R.; Reinhard, Björn M.

doi:10.1021/nl802058q

Cited by 100 publications

(126 citation statements)

References 53 publications

Supporting

Mentioning

126

Contrasting

Order By: Relevance

“…Furthermore, the inter-particle separation can be seen clearly among the Au nanoparticles produced at 532 nm, whereas almost all of the Au nanoparticles produced at 1064 nm are stuck together, forming chains. Rong et al [40,41] showed that if the inter-particle separations (D) are larger than the particle diameter (D) (D [ D), ''the near-field interaction between the particles is small and the resonance wavelength k res is that of an individual particle'', but if the inter-particle separations are smaller than the particle diameter (D [ D), ''the plasmons in the individual particles couple and the resonance wavelength k res red shifts with decreasing separation''. They observed the red-shift phenomena while increasing the intensity ratio (R = I 580 nm /I 530 nm ).…”

Section: Effects Of Wavelengths On the Size Of The Nanoparticlesmentioning

confidence: 99%

Comparison of characteristics of selected metallic and metal oxide nanoparticles produced by picosecond laser ablation at 532 and 1064 nm wavelengths

Hamad

2016

Appl. Phys. A

View full text Add to dashboard Cite

Picosecond laser generation of nanoparticles was only recently reported. The effect of laser wavelength in picosecond laser generation of nanoparticles is not yet fully understood. This investigation reports the new findings comparing the characteristics of Au, Ag, Ag-TiO 2 , TiO 2 , ZnO and iron oxide nanoparticles generated by picosecond laser ablation in deionised water at 532 and 1064 nm laser wavelengths. The laser ablation was carried out at a fixed pulse width of 10 ps, a repetition rate of 400 kHz and a scan speed of 250 mm/s. The nanoparticles were characterised by UV-Vis optical spectroscopy, transmission electron microscopy (TEM) and X-ray diffraction (XRD). The work shows that there is no noticeable difference in the size of the metal oxide nanoparticles produced at 532 and 1064 nm, especially for the TiO 2 and ZnO nanoparticles; however, a considerable size difference can be seen for metallic (e.g. Au) and metallic compound (e.g. Ag-TiO 2 ) nanoparticles at the two wavelengths. It demonstrates that noble metals are more profoundly affected by laser wavelengths. The reasons behind these results are discussed. In addition, the work shows that there are different crystalline structures of the TiO 2 nanoparticles at 1064 and 532 nm wavelengths.

show abstract

Section: Effects Of Wavelengths On the Size Of The Nanoparticlesmentioning

confidence: 99%

Comparison of characteristics of selected metallic and metal oxide nanoparticles produced by picosecond laser ablation at 532 and 1064 nm wavelengths

Hamad

2016

Appl. Phys. A

View full text Add to dashboard Cite

show abstract

“…Instruments based on hyperspectral darkfield have enabled quantitative molecular imaging [22] and spectral multiplexing [7], using functionalized nanoparticles where an antibody conjugate provides molecular specificity [4,23]. These instruments are even capable of detecting plamonic shifts due to coupling which can then be used to provide additional spatial information [24][25][26]. However, a key limitation of this approach is that the detailed structure of the cells is not imaged directly using the nanoparticle tagging and instead must be inferred.…”

Section: Darkfield Microspectroscopymentioning

confidence: 99%

Comparative review of interferometric detection of plasmonic nanoparticles

Wax¹,

Meiri²,

Arumugam³

et al. 2013

Biomed. Opt. Express

View full text Add to dashboard Cite

Noble metal nanoparticles exhibit enhanced scattering and absorption at specific wavelengths due to a localized surface plamson resonance. This unique property can be exploited to enable the use of plasmonic nanoparticles as contrast agents in optical imaging. A range of optical techniques have been developed to detect nanoparticles in order to implement imaging schemes. Here we review several different approaches for using optical interferometry to detect the presence and concentration of nanoparticles. The strengths and weaknesses of the various approaches are discussed and quantitative comparisons of the achievable signal to noise ratios are presented. The benefits of each approach are outlined as they relate to specific application goals.

show abstract

“…Discrete nanoparticles, however, can be suspended in solution, which may be beneficial in some applications, where sensing within living cells is one recent example. 28 On the other hand, the continuity of metal films perforated with nanoholes provides a unique opportunity for combining nanoplasmonic sensing with other transducer formats that rely on electrical readout. These aspects, which are of outmost importance depending on the systems under investigation, are addressed with suitable examples from us and others, with focus on the use of nanoplasmonic sensors to analyze biomolecular structural changes and means to quantify the response from nanoplasmonic sensors in terms of bound molecular mass.…”

Section: Introductionmentioning

confidence: 99%

Nanoplasmonic biosensing with focus on short-range ordered nanoholes in thin metal films (Review)

et al. 2008

View full text Add to dashboard Cite

The resonance conditions for excitation of propagating surface plasmons at planar metal/dielectric interfaces and localized surface plasmons associated with metal nanostructures are both sensitive to changes in the interfacial refractive index. This has made these phenomena increasingly popular as transducer principles in label-free sensing of biomolecular recognition reactions. In this article, the authors review the recent progress in the field of nanoplasmonic bioanalytical sensing in general, but set particular focus on certain unique possibilities provided by short-range ordered nanoholes in thin metal films. Although the latter structures are formed in continuous metal films, while nanoparticles are discrete entities, these two systems display striking similarities with respect to sensing capabilities, including bulk sensitivities, and the localization of the electromagnetic fields. In contrast, periodic arrays of nanoholes formed in metal films, most known for their ability to provide wavelength-tuned enhanced transmission, show more similarities with conventional propagating surface plasmon resonance. However, common for both short-range ordered and periodic nanoholes formed in metal films is that the substrate is electrically conductive. Some of the possibilities that emerge from sensor templates that are both electrically conductive and plasmon active are discussed and illustrated using recent results on synchronized nanoplasmonic and quartz crystal microbalance with dissipation monitoring of supported lipid bilayer formation and subsequent biomolecular recognition reactions. Besides the fact that this combination of techniques provides an independent measure of biomolecular structural changes, it is also shown to contribute with a general means to quantify the response from nanoplasmonic sensors in terms of bound molecular mass.

show abstract

Resolving Sub-Diffraction Limit Encounters in Nanoparticle Tracking Using Live Cell Plasmon Coupling Microscopy

Cited by 100 publications

References 53 publications

Comparison of characteristics of selected metallic and metal oxide nanoparticles produced by picosecond laser ablation at 532 and 1064 nm wavelengths

Comparison of characteristics of selected metallic and metal oxide nanoparticles produced by picosecond laser ablation at 532 and 1064 nm wavelengths

Comparative review of interferometric detection of plasmonic nanoparticles

Nanoplasmonic biosensing with focus on short-range ordered nanoholes in thin metal films (Review)

Contact Info

Product

Resources

About