Measuring the refractive index and sub-nanometre surface functionalisation of nanoparticles in suspension

NMC Mulkerns, WH Hoffmann, J Ramos-Soriano… - Nanoscale, 2022 - pubs.rsc.org
Direct measurements to determine the degree of surface coverage of nanoparticles by
functional moieties are rare, with current strategies requiring a high level of expertise and …

Determining number concentrations and diameters of polystyrene particles by measuring the effective refractive index of colloids using surface plasmon resonance

J Tuoriniemi, B Moreira, G Safina - Langmuir, 2016 - ACS Publications
The capabilities of surface plasmon resonance (SPR) for characterization of colloidal
particles were evaluated for 100, 300, and 460 nm nominal diameter polystyrene (PS) …

Refractive index measurement of nanoparticles by immersion refractometry based on a surface plasmon resonance sensor

H Kano, A Iseda, K Ohenoja, I Niskanen - Chemical Physics Letters, 2016 - Elsevier
Accurate determination of the refractive index of nanoparticles has important ramifications
for applications, such as pharmaceuticals, cosmetics, paints, textiles, and inks. We describe …

Adsorption independent silver colloids index measurement with metal-cladding optical waveguide

Y Lu, H Deng, F Liu, B Shu, X Deng, Y Zhai, X Gong… - Optik, 2022 - Elsevier
The refractive index measurements of silver nanoparticles colloids can provide chemical
composition and nanostructure details. Although the standard surface plasmon resonance …

Assessment of the characterization of nonabsorbing nanoparticles in suspension from effective optical properties

R Márquez-Islas, C Sánchez-Pérez… - Applied Optics, 2015 - opg.optica.org
We analyze a method recently proposed to retrieve the size, refractive index, and
concentration of particles in nonabsorbing nanofluids from measurements of the complex …

Optical sizing of nanoparticles in thin films of nonabsorbing nanocolloids

G Morales-Luna, A García-Valenzuela - Applied Optics, 2019 - opg.optica.org
We study an optical method to infer the size of nanoparticles in a thin film of a dilute
nonabsorbing nanocolloid. It is based on determining the contribution of the nanoparticles to …

Determination of the Refractive Index of Particles Through the Immersion Solid Matching Method

I Niskanen, J Lauri, M Yokota, R Heikkilä… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
We describe a new measurement technique to determine the refractive index (RI) of solid
particles by monitoring the simultaneous scattering of light from suspension with a camera …

Optik der Milch: Experimente und Simulationen

S Stocker - 2018 - oparu.uni-ulm.de
Die Dissertation befasst sich mit der Lichtausbreitung im Medium Milch. Im Rahmen der
Arbeit wurden zunächst die optischen Eigenschaften von Milch untersucht. Dabei wurde der …

[PDF][PDF] Nanoparticle Characterisation and Refractive Index Sensing Via Backscattering Interferometry

N Mulkerns - 2022 - research-information.bris.ac.uk
Nanoparticles are a diverse subset of nanomaterials with a plethora of uses in areas such as
therapeutics, diagnostics, optical materials design, catalysis, and metal sensing to name just …

A possible optical gauge for supervising particle size in nanofluids

A García-Valenzuela, G Morales-Luna… - Materials Today …, 2016 - Elsevier
We examine theoretically using the ratio between the real and imaginary parts of the
effective refractive increment in metallic nanofluids as a particle size monitor. We refer to this …