Dye-doped spheres with plasmonic semi-shells: Lasing modes and scattering at realistic gain levels

• Nikita Arnold,
• Boyang Ding,
• Calin Hrelescu and
• Thomas A. Klar

Beilstein J. Nanotechnol. 2013, 4, 974–987, doi:10.3762/bjnano.4.110

• σab. The extinction cross section is always defined as σex = σsc + σab, irrespectively of the sign of σab. Far-field patterns are calculated by the internal CST routines, which project the fields on the sides of the bounding box into the far-fields via fast Fourier transform. Adaptive meshing is a

A facile synthesis of a carbon-encapsulated Fe₃O₄ nanocomposite and its performance as anode in lithium-ion batteries

• Raju Prakash,
• Katharina Fanselau,
• Shuhua Ren,
• Tapan Kumar Mandal,
• Christian Kübel,
• Horst Hahn and
• Maximilian Fichtner

Beilstein J. Nanotechnol. 2013, 4, 699–704, doi:10.3762/bjnano.4.79

• bare Fe3O4 nanoparticles could also be observed (Figure S2 in Supporting Information File 1). Fast Fourier transform (FFT) analysis of various HRTEM images (of crystallites located inside or outside of carbon shells, see Figure S3 in Supporting Information File 1) reveal that the observed lattice

Polynomial force approximations and multifrequency atomic force microscopy

• Daniel Platz,
• Daniel Forchheimer,
• Erik A. Tholén and
• David B. Haviland

Beilstein J. Nanotechnol. 2013, 4, 352–360, doi:10.3762/bjnano.4.41

• approximates the inverse in a least-squares sense. The matrix can be rapidly computed from Equation 16 using the Fast Fourier Transform (FFT) algorithm. Therefore, Equation 19 provides an efficient way to determine the expansion coefficients of the the tip–surface force. However, special care should be taken

Towards 4-dimensional atomic force spectroscopy using the spectral inversion method

• Jeffrey C. Williams and
• Santiago D. Solares

Beilstein J. Nanotechnol. 2013, 4, 87–93, doi:10.3762/bjnano.4.10

• calculate its spectrum, Zp(ω), through application of the fast Fourier transform to a sequence of values of zp(t) recorded at regular intervals. Additionally, one can also obtain the spectrum of the driving force by rewriting Equation 2 as Next, one can apply the inverse fast Fourier transform to Fd(ω) in

Structural, electronic and photovoltaic characterization of multiwalled carbon nanotubes grown directly on stainless steel

• Luca Camilli,
• Manuela Scarselli,
• Silvano Del Gobbo,
• Paola Castrucci,
• Eric Gautron and
• Maurizio De Crescenzi

Beilstein J. Nanotechnol. 2012, 3, 360–367, doi:10.3762/bjnano.3.42

• degree of the synthesized nanostructures is evidenced in the inset of Figure 3b, in which the reported Fast Fourier Transform of the TEM image consists of two single points located at 0.35 nm from the centre. In Figure 4 we report the carbon core-valence-valence (CVV) Auger features for HOPG and a MWCNT

• -resolution TEM image assessing the multiwalled nature of the carbon nanotubes synthesized on SS. (b) High-resolution TEM picture of a single MWCNT with 19 walls. The inset displays the Fast Fourier Transform of the TEM image reported in (b). The two spots, at a semidistance of 0.35 nm, represent the parallel