Polymeric and Lipid Membranes—From Spheres to Flat Membranes and vice versa

Abstract

Membranes are important components in a number of systems, where separation and control of the flow of molecules is desirable. Controllable membranes represent an even more coveted and desirable entity and their development is considered to be the next step of development. Typically, membranes are considered on flat surfaces, but spherical capsules possess a perfect “infinite” or fully suspended membranes. Similarities and transitions between spherical and flat membranes are discussed, while applications of membranes are also emphasized.

Impact of Nanocapsules on Red Blood Cells Interplay Jointly Assessed by Optical Tweezers and Microscopy

“…Nowadays, there are numerous delivery systems such as: natural biological vehicles (such as bacteria and viruses [1,2], various cell types including red blood cells (RBCs) [3][4][5], immune cells [6,7], stem cells [8][9][10][11] and manufactured carriers (liposomes [12], micelle [13], polymeric capsules [14][15][16][17], polymeric complexes [18][19][20][21]). Polymeric nanocapsules (NCs) are a promising system of natural carriers for targeted drug delivery because of their low cytotoxicity, shell flexibility, and high in vivo stability [22][23][24][25][26].…”

Optical monitoring of adipose tissue destruction under encapsulated lipase action

“…Varying the number of polyelectrolyte layers and the shell composition, one can achieve further control under the duration of the lipase release from capsules affecting the process of adipose tissue destruction. Furthermore, different external triggers, including pH, ionic environment, temperature, as well as remote exposure of the magnetic field gradient, laser beam, ultrasound, radio frequency, and microwave radiation affect the payload release form the polyelectrolyte microcapsules . By this means, the rate of adipose tissue destruction can be controlled by different thicknesses of the polymeric shells and various external conditions.…”

“…LbL assembled polymer microcapsules are proven as a perspective for various applications due to versatility concerning the payload, targeted delivery, and controlled release options . Polyelectrolyte microcapsules are able to retain a variety of payloads with different water solubilities and perform their release by diffusion or burst release forced by remote activation with light, magnetic field, ultrasound, temperature, pH, salinity, redox potential, and chemicals . Hereby, such type of carriers holds out the prospect of their application for lipase encapsulation.…”

Polycaprolactone-Based, Porous CaCO3 and Ag Nanoparticle Modified Scaffolds as a SERS Platform With Molecule-Specific Adsorption

“…In addition, porous calcium carbonate particles have been shown to prolong the stability and detection capability of silver nanoparticles (Markina et al, 2018). An appropriate platform for deposition of such particles are scaffolds, for which electrospinning (ES) appears to be a very attractive fabrication technique (Prikhozhdenko et al, 2016;Saveleva et al, 2017;Chernozem et al, 2019).…”