Increase of resolution by use of microspheres related to complex Snell’s law

Ben‐Aryeh, Y.

doi:10.1364/josaa.33.002284

Cited by 40 publications

(31 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…corrugated metallic film [15]) and which are decaying along the z axis. These waves are transformed to propagating waves by the microsphere, [14][15][16][17] but this process is effective only near the contact point O where the distance between the object plane surface and the microsphere surface is enough small so that significant amount of evanescent waves arrives at the microsphere surface. b) There is a large amount of EM waves which are not converted by the object into evanescent waves and by converging near the focal point P are producing the Nano-jet.…”

Section: Microsphere Optical Nano-jet Related To Non-diffractive Bessmentioning

confidence: 99%

Nano-jet related to Bessel beams and to super-resolutions in microsphere optical experiments

Ben‐Aryeh

2017

EPJ Techn Instrum

View full text Add to dashboard Cite

The appearance of a Nano-jet in the microsphere optical experiments is analyzed by relating this effect to non-diffracting Bessel beams. By inserting a circular aperture with a radius of subwavelength dimension in the EM waist, and sending the transmitted light into a confocal microscope, the EM oscillations by the different Bessel beams are avoided. On this constant EM field evanescent waves are superposed. While this effect improves the optical-depth of the imaging process, the object fine-structures are obtained, from the modulation of the EM fields by the evanescent waves. The use of a combination of the microsphere optical system with an interferometer for phase contrast measurements is described.

show abstract

Section: Microsphere Optical Nano-jet Related To Non-diffractive Bessmentioning

confidence: 99%

Nano-jet related to Bessel beams and to super-resolutions in microsphere optical experiments

Ben‐Aryeh

2017

EPJ Techn Instrum

View full text Add to dashboard Cite

show abstract

“…As is well known, the component of the monochromatic light wave vector, which is parallel to the boundary plane, is not changed by transmittance. We postulate that such boundary condition would also be valid for complex wave vector as analyzed in the previous paper [59] is the component of the present spatial mode in the microsphere which is perpendicular to the microsphere surface at point P . We substitute Eqs.…”

Section: Conversion Of Evanescent Waves Into Propagating Wavesmentioning

confidence: 84%

Super-Resolution of Nano-Materials and Quantum Effects Obtained by Microspheres

Ben‐Aryeh¹

2019

rpm

Self Cite

View full text Add to dashboard Cite

In this article, microsphere super-resolution, which are beyond the Abbe classical limit, are described. The conversion of evanescent waves into propagating waves is analyzed by using the geometry of the microsphere. In microsphere experiments, a nanojet is produced near the focal plane, where its width is smaller than the Abbe limit and remains unchanged in the axial direction for certain wavelengths. The interference between the evanescent waves being converted into propagating waves and the nanojet leads to an increase in light intensity and confinement effects in the focal plane. However, the nanojet is not the main source of the super-resolution as the fine structures are available mainly in the evanescent waves. Quantum effects for super-resolution are obtained from special properties of the evanescent waves leading to an uncertainty relation. Several methods to increase the phase contrast in microsphere experiments have been described, which can be used for phase object measurements. Plasmon interaction can be used for measuring fine structures of special systems and for converting evanescent waves into propagating waves but they might also change the optical image in a way which is difficult to analyze. Therefore, most microsphere high-resolution experiments were conducted without plasmon interactions.

show abstract

“…However, the objective lens must be able to resolve the magnified features of the virtual image generated by the microsphere. Although the phenomenon of microsphere‐assisted microscopy is still not fully explained and the claimed resolution values are debatable (Allen et al ., ), several experimental results and computer simulations have not only determined the role of evanescent waves (Ben‐Aryeh, ), the influence of the surrounding medium (Yao et al ., ; Darafsheh, ) and the effect of the coherence (Maslov & Astratov, ; Perrin et al ., ), but also improved the field of view using stitching techniques (Wang et al ., ; Huszka et al ., ). Moreover, microsphere‐assisted microscopy has been successfully combined with interferometry for the three‐dimensional (3D) topography reconstruction of nanostructures (Wang et al ., ; Perrin et al ., ; Kassamakov et al ., ) or cell morphology (Aakhte et al ., ), and with dark‐field illumination for the imaging of translucent biological samples (Perrin et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Illumination conditions in microsphere‐assisted microscopy

Perrin

Leong-Hoï

et al. 2019

Journal of Microscopy

View full text Add to dashboard Cite

Summary White‐light microsphere‐assisted microscopy is a full‐field and label‐free imaging promising technique making it possible to achieve a subdiffraction lateral resolution. However, performance of this technique depends not only on the geometrical parameters but also on the illumination conditions of the optical system. In the present work, experimental measurements and computer simulations have been performed in air in order to determine the influence of the two diaphragm apertures of the Köhler arrangement and the spectral width of the light source on both the depth‐of‐focus of the microsphere and the optimization of the imaging contrast. Furthermore, the super‐resolution phenomenon is demonstrated and the cumulated optical aberrations are shown through the measurement of the optical transfer function for the different arrangements of the illumination part.

show abstract

Increase of resolution by use of microspheres related to complex Snell’s law

Cited by 40 publications

References 32 publications

Nano-jet related to Bessel beams and to super-resolutions in microsphere optical experiments

Nano-jet related to Bessel beams and to super-resolutions in microsphere optical experiments

Super-Resolution of Nano-Materials and Quantum Effects Obtained by Microspheres

Illumination conditions in microsphere‐assisted microscopy

Contact Info

Product

Resources

About