A5053579327- Surfactants and Colloidal Systems
- Rheology and Fluid Dynamics Studies
- Liquid Crystal Research Advancements
- Nanopore and Nanochannel Transport Studies
- Force Microscopy Techniques and Applications
- Material Dynamics and Properties
- Micro and Nano Robotics
- Carbon Nanotubes in Composites
- Orbital Angular Momentum in Optics
- Nonlinear Dynamics and Pattern Formation
- Advanced Materials and Mechanics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Supramolecular Self-Assembly in Materials
- Electrostatics and Colloid Interactions
- Pickering emulsions and particle stabilization
- Advanced Polymer Synthesis and Characterization
- Lipid Membrane Structure and Behavior
- Mechanical and Optical Resonators
- Microfluidic and Bio-sensing Technologies
- Porphyrin and Phthalocyanine Chemistry
- NMR spectroscopy and applications
- Microfluidic and Capillary Electrophoresis Applications
University of Chicago
2021-2023
Universidad Nacional Autónoma de México
2017-2019
Instituto de Física La Plata
2018
Many crystallization processes, including biomineralization and ice-freezing, occur in small curved volumes, where surface curvature can strain the crystal, leading to unusual configurations defect formation. The role of on crystallization, however, remains poorly understood. Here, we study blue phase (BP) liquid crystals under confinement, which provides insights into mechanism by BPs reconfigure their three-dimensional lattice structure adapt curvature. are a assembly high-chirality...
Chromophores susceptible to light-induced trans–cis isomerization embedded in cylindrical micelles can modify and their light-responsive performance. A small chromophore (4-(phenylazo)benzoate ion) is made of cetyltrimethylammonium bromide (CTAB) sodium salicylate (NaSal) water. The microstructure examined by scanning electron microscopy (SEM) nuclear magnetic resonance (NMR). Rheological behavior the length scales micellar network are determined rheology microrheology. substantially...
A diblock copolymer made of poly(1,4-butadiene)-block-polyethylene oxide, with a degree polymerization the polybutadiene and polyethylene oxide blocks 37 57, respectively, self-assembles in water as worm-like micelles determined by small angle neutron scattering an average diameter ∼12.7 nm, core radius ∼2.7 shell ∼3 estimated persistence length >225 nm. Worm-like almost same copolymer, but smaller block (degree 45) were also measured. The observed negative staining using low energy electron...
The combination of flow and acoustic field applied to liquid crystals in confinement induces the formation new structures.
Abstract This review paper presents a procedure for measuring the mesoscopic scales in micellar solutions embedded with giant cylindrical micelles using mean square displacement determined quasi-elastic multiple light scattering method (diffusing wave spectroscopy) and theory. The of interest are micelles’ total contour length, persistence entanglement lengths, mesh size entangled network. All them depend on physicochemical parameters determine rheological behavior. We present an assessment...
The optical properties of liquid crystals serve as the basis for display, diagnostic, and sensing technologies. Such are generally controlled by relying on electric fields. In this work, we investigate effects microfluidic flows acoustic fields molecular orientation corresponding response nematic crystals. Several previously unknown structures identified, which rationalized in terms a state diagram function strengths flow field. new interpreted calculations with free energy functional...
The development of synthetic microswimmers has advanced our understanding the fundamental self-propelled mechanisms living systems. However, there are scarce studies at microscale within highly structured anisotropic media, such as bacteria or cellular receptors that swim in concentrated solutions filamentous proteins lipids with viscoelastic properties. Synthetic liquid crystals (LCs) have potential to serve biomimetic surrogates study structure and dynamics Nevertheless, on thermotropic...
Motile liquid crystal (LC) colloids show peculiar behavior due to the high sensitivity external stimuli driven by LC elastic and surface effects. However, few studies focus on harnessing phase transitions propel colloidal inclusions nematic-isotropic (NI) interface. We engineer a quasi-2D active system consisting of solid micron-sized light-absorbent platelets immersed in thermotropic nematic LC. The self-propel presence light while self-inducing localized NI transition. sample's...
We present the detailed rheological changes that occur when small quantities of single-wall carbon nanotubes are dispersed in a poly(acrylic acid) water solution, around overlap polymer concentration, up to gel point. Here, pH is used tune formation. Suspensions at ≤ 5 exfoliated and by polymer. Contacts between mainly through entangling, suspension viscoelastic. At > 5, charged, solution not good solvent for anymore. Nanotube bundles covered with formed mechanically percolate along fluid...