Results 31 to 40 of about 37,056 (285)

Improvement of functional characteristics of Hypophthalmichthys molitrix protein by modification with chitosan oligosaccharide

open access: yesFrontiers in Nutrition, 2023
In the food processing field, it is very often that fish proteins are denatured affecting the nutritional value of the product which is vital to be solved.
Haihua Cong   +3 more
doaj   +1 more source

Dual-heterodyne Kelvin probe force microscopy

open access: yesBeilstein Journal of Nanotechnology, 2023
We present a new open-loop implementation of Kelvin probe force microscopy (KPFM) that provides access to the Fourier spectrum of the time-periodic surface electrostatic potential generated under optical (or electrical) pumping with an atomic force ...
Benjamin Grévin   +3 more
doaj   +1 more source

Fabrication and characterization of quercetin loaded casein phosphopeptides-chitosan composite nanoparticles by ultrasound treatment: Factor optimization, formation mechanism, physicochemical stability and antioxidant activity

open access: yesUltrasonics Sonochemistry, 2021
Ultrasound treatment was used to successfully prepare Quercetin (Qu)-loaded Casein phosphopeptides (CPP)/chitosan (CS) nanoparticles. Compared with the control, the above ternary nanoparticles with the smallest size (241.27 nm, decreased by 34.32 ...
Qiufang Liang   +5 more
doaj   +1 more source

Research Paper: Implantation of Helium in Polyethylene and Polystyrene to Improve Wettability of Surfaces [PDF]

open access: yesفیزیک کاربردی ایران, 2022
Hydrophilicity is one of the essential properties of biocompatible materials to be placed in the body environment. In this research, improvement in hydrophilicity of the surfaces of polyethylene and polystyrene samples with implantation of helium ion was
Parisa Ahmadi   +2 more
doaj   +1 more source

Probing relaxations of atomic-scale junctions in the Pauli repulsion range

open access: yesNew Journal of Physics, 2019
Clean metal as well as C _60 -terminated tips of an atomic force microscope probe the interaction with C _60 molecules adsorbed on Cu(111) and Pb(111).
J Brand, N Néel, J Kröger
doaj   +1 more source

Stop-flow Lithography to Continuously Fabricate Microlens Structures Utilizing an Adjustable Three-Dimensional Mask

open access: yesMicromachines, 2014
Stop-flow lithography (SFL) is a microfluidic-based particle synthesis method, in which photolithography with a two dimensional (2D) photomask is performed in situ within a microfluidic environment to fabricate multifunctional microstructures.
Shih-Hao Huang, Chia-Kai Lin
doaj   +1 more source

Numerical modelling of nonlinear electromechanical coupling of an atomic force microscope with finite element method [PDF]

open access: yesAdvances in Radio Science, 2010
In this contribution, an atomic force microscope is modelled and in this context, a non-linear coupled 3-D-boundary value problem is solved numerically using the finite element method.
J. Freitag, W. Mathis
doaj   +1 more source

Periodic structures on liquid-phase smectic A, nematic and isotropic free surfaces

open access: yesBeilstein Journal of Nanotechnology, 2018
The free boundary of smectic A (SmA), nematic and isotropic liquid phases were studied using a polarized optical microscope, an interferometric surface structure analyzer (ISSA), an atomic force microscope (AFM) and a scanning near-field optical ...
Anna N. Bagdinova   +5 more
doaj   +1 more source

Quantitative characterization of dielectric properties of nanoparticles using electrostatic force microscopy

open access: yesAIP Advances, 2020
We use a new method based on Electrostatic Force Microscopy (EFM) to perform quantitative measurements of the dielectric constants of individual carboxylated as well as non-functionalized polystyrene nanospheres. The EFM data record the oscillation phase
Marc Descoteaux   +2 more
doaj   +1 more source

Predicting the placement of biomolecular structures on AFM substrates based on electrostatic interactions

open access: yesFrontiers in Molecular Biosciences, 2023
Atomic force microscopy (AFM) and high-speed AFM allow direct observation of biomolecular structures and their functional dynamics. Based on scanning the molecular surface of a sample deposited on a supporting substrate by a probing tip, topographic ...
Romain Amyot   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy