Quality by design optimization of microemulsions for topical delivery of Passiflora setacea seed oil

• Daniel T. Pereira,
• Douglas Dourado,
• Danielle T. Freire,
• Dayanne L. Porto,
• Cícero F. S. Aragão,
• Myla L. de Souza,
• Guilherme R. S. de Araujo,
• Ana Maria Costa,
• Wógenes N. Oliveira,
• Anne Sapin-Minet,
• Éverton N. Alencar and
• Eryvaldo Sócrates T. Egito

Beilstein J. Nanotechnol. 2025, 16, 2116–2131, doi:10.3762/bjnano.16.146

• effects of OPS concentration, the surfactants mixture ratio (Smix), and Smix concentration on the formation of a microemulsified system with desirable hydrodynamic diameter and transparency (Table 7). Initially, a full factorial design (23) with three central points was employed to explore the

Influence of electrospray deposition on C₆₀ molecular assemblies

• Antoine Hinaut,
• Sebastian Scherb,
• Sara Freund,
• Zhao Liu,
• Thilo Glatzel and
• Ernst Meyer

Beilstein J. Nanotechnol. 2021, 12, 552–558, doi:10.3762/bjnano.12.45

• connected, the vacuum level of the sample chamber is 1 × 10−7 mbar. The C60 molecules were dissolved in a toluene/methanol mixture (ratio 5:1 in volume). During spray deposition the pressure rose up to 1 × 10−6 mbar. The typically applied voltage was 1.2 kV with occasional necessary adjustments during spray

Material discrimination and mixture ratio estimation in nanocomposites via harmonic atomic force microscopy

• Weijie Zhang,
• Yuhang Chen,
• Xicheng Xia and
• Jiaru Chu

Beilstein J. Nanotechnol. 2017, 8, 2771–2780, doi:10.3762/bjnano.8.276

• materials and to estimate the mixture ratio of the constituent components in nanocomposites. The major influencing factors, namely amplitude feedback set-point, drive frequency and laser spot position along the cantilever beam, were systematically investigated. Employing different set-points induces

• may occur. It was also found that the laser spot position affects the harmonic signal strengths as expected. Based on these investigations, harmonic AFM was employed to identify material components and estimate the mixture ratio in multicomponent materials. The composite samples are composed of

• applications in various fields of nanoscience and nanotechnology. Keywords: atomic force microscopy; harmonic imaging; material discrimination; mixture ratio; nanocomposites; Introduction Because of its extreme importance and widespread applications, nanocomposites have received more and more attention [1

Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures

• Alexander G. Milekhin,
• Nikolay A. Yeryukov,
• Larisa L. Sveshnikova,
• Tatyana A. Duda,
• Ekaterina E. Rodyakina,
• Victor A. Gridchin,
• Evgeniya S. Sheremet and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2015, 6, 749–754, doi:10.3762/bjnano.6.77

• resonance [10][11]. SERS by LO phonons of CdTe was investigated in mixed Ag-CdTe NCs with a controllable Ag nanoparticle/CdTe NC mixture ratio [12]. The first report on the observation of the SERS effect by optical phonons in CuS NCs on ordered arrays of Au nanoclusters fabricated in a nanolithography