A super-oscillatory step-zoom metalens for visible light

• Yi Zhou,
• Chao Yan,
• Peng Tian,
• Zhu Li,
• Yu He,
• Bin Fan,
• Zhiyong Wang,
• Yao Deng and
• Dongliang Tang

Beilstein J. Nanotechnol. 2022, 13, 1220–1227, doi:10.3762/bjnano.13.101

• years, the super-oscillation method based on the fine interference of optical fields has been successfully applied to sub-diffraction focusing and super-resolution imaging. However, most previously reported works only describe static super-oscillatory lenses. Super-oscillatory lenses using phase-change

• spatial resolution of λ/5 [3]. However, it requires additional designed illumination patterns and image reconstruction. Near-field scanning optical microscopy can achieve super-resolution imaging by detecting surface evanescent fields of objects [4]. Near-field focusing lenses [5] based on surface

• plasmons can reach a spatial resolution of 22 nm, but the imaging range is limited to the sample surface, causing difficulties in biomedical imaging. Although negative refractive superlenses and hyperbolic metamaterials [6][7] have been experimentally verified for super-resolution imaging, they exhibit

Hexagonal boron nitride: a review of the emerging material platform for single-photon sources and the spin–photon interface

• Stefania Castelletto,
• Faraz A. Inam,
• Shin-ichiro Sato and
• Alberto Boretti

Beilstein J. Nanotechnol. 2020, 11, 740–769, doi:10.3762/bjnano.11.61

Nitrogen-vacancy centers in diamond for nanoscale magnetic resonance imaging applications

• Alberto Boretti,
• Lorenzo Rosa,
• Jonathan Blackledge and
• Stefania Castelletto

Beilstein J. Nanotechnol. 2019, 10, 2128–2151, doi:10.3762/bjnano.10.207

• limit, which is ≈305 nm over a field-of-view of 50 × 50 μm2 with a spin sensitivity of 104 spins per voxel or ≈100 zmol. This method can enable the development of electron spin resonance with zeptomole sensitivity in chemical sciences. Super-resolution imaging beyond the diffraction limit using spin

Correction: Photobleaching of YOYO-1 in super-resolution single DNA fluorescence imaging

• Joseph R. Pyle and
• Jixin Chen

Beilstein J. Nanotechnol. 2018, 9, 809–811, doi:10.3762/bjnano.9.74

• Joseph R. Pyle Jixin Chen Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, USA 10.3762/bjnano.9.74 Keywords: diffusion; PAINT; single-molecule photophysics; super-resolution imaging; The originally published Figure 7 and

Photobleaching of YOYO-1 in super-resolution single DNA fluorescence imaging

• Joseph R. Pyle and
• Jixin Chen

Beilstein J. Nanotechnol. 2017, 8, 2296–2306, doi:10.3762/bjnano.8.229

• Joseph R. Pyle Jixin Chen Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, USA 10.3762/bjnano.8.229 Abstract Super-resolution imaging of single DNA molecules via point accumulation for imaging in nanoscale topography (PAINT

• theoretically predicted with the proposed method in this report. Keywords: diffusion; PAINT; single-molecule photophysics; super-resolution imaging; Introduction Fluorescence imaging of DNA with intercalating dyes is important for DNA sensing [1][2], nucleic acid imaging inside cells and viruses [3][4][5

• imaging [17][18][19][20]. A recent trend in fluorescent imaging is the use of super-resolution imaging to resolve fine structures below the typical diffraction limit of visible light microscopy at ≈250 nm [21]. This is important in visualizing the conformation of DNA molecules, such as DNA looping by

Evaluation of quantum dot conjugated antibodies for immunofluorescent labelling of cellular targets

• Jennifer E. Francis,
• David Mason and
• Raphaël Lévy

Beilstein J. Nanotechnol. 2017, 8, 1238–1249, doi:10.3762/bjnano.8.125

• spectra and smaller Qdots in the blue region [1]. Qdots are also an ideal probe choice for super-resolution imaging techniques that require stochastic optical fluctuation, as they exhibit well-characterised blinking between fluorescent and non-fluorescent states [10][11]. Despite these favourable

Functionalization of α-synuclein fibrils

• Simona Povilonienė,
• Vida Časaitė,
• Virginijus Bukauskas,
• Arūnas Šetkus,
• Juozas Staniulis and
• Rolandas Meškys

Beilstein J. Nanotechnol. 2015, 6, 124–133, doi:10.3762/bjnano.6.12

• complex structures ordered by the amyloid template has been described [36]. Ries et al., recently developed a method for super resolution imaging of amyloid fibrils with binding-activated probes where unlabeled target structures (eg., α-synuclein fibrils) can be visualised after the amyloid-specific

Probing the plasmonic near-field by one- and two-photon excited surface enhanced Raman scattering

• Katrin Kneipp and
• Harald Kneipp

Beilstein J. Nanotechnol. 2013, 4, 834–842, doi:10.3762/bjnano.4.94

• aggregates of nanoparticle of various sizes and shapes reaching from dimers [4][5][6][7], and trimers [8] to selfsimilar structures formed by silver- or gold nanospheres [9]. High local fields can also exist in fractal films or cavities of these noble metals [10]. The recently reported super-resolution

• imaging of SERS on silver nanoaggregates has directly confirmed nanoparticle junctions to be responsible for single molecule SERS [11]. Computations show dramatic variations in near-field intensities within a few nanometers. Even sophisticated optical experiments cannot reveal these dramatic spatial