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Enhanced Exiton-Plasmon Interaction Enabling Observation of Near-Field Photoluminescence in a WSe2-Gold Nanoparticle Hybrid System

Figure 2 from Anastasia Romashkina et al.2025, “Enhanced Exciton–Plasmon Interaction Enabling Observation of Near-Field Photoluminescence in a WSe2–Gold Nanoparticle Hybrid System”, Near-field optical microscope. Excitation and detection scheme in s-SNOM for the investigation of near-field photoluminescence. The s-SNOM is based on a tapping-mode atomic force microscope and uses a gold coated NANOSENSORS AdvancedTECTM ATEC-NCAu tip-view AFM probe.

Monolayer transition metal dichalcogenides, such as tungsten diselenide, have recently attracted considerable attention due to their reduced dielectric screening and direct bandgap, which result in… Read More »Enhanced Exiton-Plasmon Interaction Enabling Observation of Near-Field Photoluminescence in a WSe2-Gold Nanoparticle Hybrid System

Revealing the regulation of water dipole potential to aggregation of amyloid-β at chiral interface by surface-enhanced infrared adsorption spectroscopy

Figure 3 from Manyu Zhu et al. (2024), “Revealing the regulation of water dipole potential to aggregation of amyloid-β 42 at chiral interface by surface-enhanced infrared absorption spectroscopy” Aggregation of Aβ42 on different chiral interfaces. (A–E) AFM images of L-NIBC surface and (H–L) D-NIBC surface after incubation in Aβ42 monomer solution for 0 min, 10 min, 1 h, 12 h, 24 h at 37°C in the presence of 10 mm PBS at pH 7.4. (F,M) AFM images of L-NIBC surface and D-NIBC surface after incubation in Aβ42 monomer solution in the presence of 10 mm PBS at pH 9.0. (G,N) AFM images of L-NIBC surface and D-NIBC surface after incubation in Aβ42 monomer solution in the presence of 10 mm PBS and 150 mm NaCl at pH 7.4. (O,P) Time-dependent SEIRA spectra of Aβ42 on L-NIBC interface and on D-NIBC interface. (Q) Time-dependent surface coverage of Aβ42 on L (blue)/D-NIBC (red) chiral interfaces in the presence of 10 mm PBS at pH 7.4, which was calculated by integrating the area of the amide II band. (R) Integrated area of amide II band on L (blue)/D-NIBC (red) chiral interfaces in the presence of 10 mm PBS at pH 5.0, 6.0, 7.4, 8.0, 9.0, respectively. (S) Amide I band peak position on L (blue)/D-NIBC (red) chiral interfaces in the presence of 10 mm PBS at pH 5.0, 6.0, 7.4, 8.0, 9.0, respectively. (T) Integrated area of amide II band on L (blue)/D-NIBC (red) chiral interfaces in the presence of 10 mm PBS and 150 mm NaCl at pH 5.0, 6.0, 7.4, 8.0, 9.0, respectively. (U) Amide I band peak position on L (blue)/D-NIBC (red) chiral interfaces in the presence of 10 mm PBS and 150 mm NaCl at pH 5.0, 6.0, 7.4, 8.0, 9.0, respectively. The morphology of Aβ42 was measured with Atomic Force Microscopy (AFM) in tapping mode using NANOSENSORS PointProbe® Plus PPP-NCHR AFM probes.

Surface chirality plays an important role in determining the biological effect. Understanding how surface chirality regulates the behaviors of biological entities such as biomolecules and… Read More »Revealing the regulation of water dipole potential to aggregation of amyloid-β at chiral interface by surface-enhanced infrared adsorption spectroscopy

Mechanical disassembly of human picobirnavirus like particles indicates that cargo retention is tuned by the RNA-coat protein interaction

Fig. 6 from María J. Rodríguez-Espinosa et al. 2023: Model depicting the RNA cargo retention for each VLP variant. The Δ45-CP VLP structure (A) does not show externalized cargo. The CP VLP structure (B) shows shorter N-terminals compared to the Ht-CP structure (C), which implies less RNA cargo retention compared to the Ht-CP structure. The cartoons in blue, green and pink colors represent coat protein, RNA and N-terminal, respectively. For mechanical fatigue experiments, rectangular AFM cantilevers (NANOSENSORS™, uniqprobe qp-BioAC AFM probes with three different AFM cantilevers per chip) with nominal spring constants of 0.05 and 0.1 N m−1 were used. The AFM cantilevers were calibrated using Sader's method.

The idea of using virus-like particles as nanocarriers for heterologous cargo transport and delivery requires controlling the stability of the container–cargo system.* In particular, the… Read More »Mechanical disassembly of human picobirnavirus like particles indicates that cargo retention is tuned by the RNA-coat protein interaction