Recherche

Afficher tous les résultats pour

Accueil

Personne

Esther Amstad

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (100)

Mechano-responsive microcapsules with uniform thin shells

Esther Amstad, Antoine Claude Jean Vian

Capsules often prolong the shelf-life of active ingredients, such as many types of drugs, food additives, or cosmetic substances, because they delay oxidation of these substances or prevent their reactions with molecules contained in the surrounding. If ca ...

2019

Tuning the Incorporation of Magnesium into Calcite during Its Crystallization from Additive-Free Aqueous Solution

Camelia Borca, Huachuan Du, Esther Amstad

Under ambient conditions, marine organisms are able to synthesize a variety of functional materials, ranging from eye lenses to protective shells through the meticulous control over magnesium incorporation into calcite during its crystallization. The mecha ...

AMER CHEMICAL SOC2019

The interfacial structure of nano-and micron-sized oil and water droplets stabilized with SDS and Span80

Sylvie Roke, Nikolay Smolentsev, Evangelia Zdrali, Esther Amstad, Gianluca Nicolas Etienne

In this work, we provide a comparison between the stability and the interfacial structure of micrometer-sized and nanometer-sized droplets by employing a multi-instrumental approach comprised of the surface-sensitive technique of sum frequency scattering a ...

2019

Selectively Permeable Double Emulsions

Esther Amstad, Irvine Lian Hao Ong

Natural organisms are made of different types of microcompartments, many of which are enclosed by cell membranes. For these organisms to display a proper function, the microcompartments must be selectively permeable. For example, cell membranes are typical ...

2019

Microfluidic Fabrication of Capsule Sensor Platform with Double-Shell Structure

Esther Amstad

Metal nanoparticles are frequently employed for the colorimetric detection of specific target molecules using an aggregation-induced shift of the localized surface plasmon resonance. However, metal nanoparticles dispersed in bulk solutions are prone to be ...

WILEY-V C H VERLAG GMBH2019

Black Lipid Membranes: Challenges in Simultaneous Quantitative Characterization by Electrophysiology and Fluorescence Microscopy

Stefan Matile, Esther Amstad, Maria Tsemperouli

Horizontal black lipid membranes (BLMs) enable optical microscopy to be combined with the electrophysiological measurements for studying ion channels, peptide pores, and ionophores. However, a careful literature review reveals that simultaneous fluorescenc ...

AMER CHEMICAL SOC2019

Production of Additive‐Free Amorphous Nanoparticles with a SAW‐Based Microfluidic Spray‐Dryer

Huachuan Du, Esther Amstad, Mathias Steinacher, Duncan Christophe Emmanuel Gilbert

Spray‐drying is a widely employed, cost‐effective process to formulate solutions into solid particles of controlled sizes and compositions. In addition, this process can also offer control over the structure of spray‐dried particles: if the solvent is evap ...

Wiley2019

Self-healing cross-linkable shells

Esther Amstad, Gianluca Nicolas Etienne

The present invention relates to self-healing shells incorporating amphiphilic molecules having metal-coordinating group(s) reversibly cross-linked with metal cations. ...

2019

Microfluidic fabrication of vesicles with hybrid lipid/nanoparticle bilayer membranes

Esther Amstad

Hybrid lipid/nanoparticle membranes are suitable model systems both to study the complex interactions between nanoparticles and biological membranes, and to demonstrate technological concepts in cellular sensing and drug delivery. Unfortunately, embedding ...

ROYAL SOC CHEMISTRY2019

Water: How does it influence the CaCO3 formation?

Huachuan Du, Esther Amstad

Nature produces biomineral‐based materials with a fascinating set of properties using only a limited number of elements. This set of properties is obtained by closely controlling the structure and local composition of the biominerals. We are far from obtai ...

Wiley-VCH Verlag GmbH2019

The Investigation of Flory-Huggins Interaction Parameters for Amorphous Solid Dispersion Across the Entire Temperature and Composition Range

Esther Amstad

Amorphous solid dispersion (ASD) is one of the most promising enabling formulations featuring significant water solubility and bioavailability enhancements for biopharmaceutical classification system (BCS) class II and IV drugs. An accurate thermodynamic u ...

2019

Simplified Drop-seq workflow with minimized bead loss using a bead capture and processing microfluidic chip

Bart Deplancke, Esther Amstad, Riccardo Dainese, Johannes Julius Bues, Marjan Biocanin

Single-cell RNA-sequencing (scRNA-seq) has revolutionized biomedical research by enabling the in-depth analysis of cell-to-cell heterogeneity of tissues with unprecedented resolution. One of the catalyzing technologies is single cell droplet microfluidics, ...

2019

Amorphous CaCO3: Influence of the Formation Time on Its Degree of Hydration and Stability

Camelia Borca, Francesco Stellacci, Huachuan Du, Esther Amstad, Anna Murello, Mathias Steinacher

Calcium carbonate (CaCO3) is one of the most abundant biominerals that is prevalent in rocks and often used as a structural material in marine animals. Many of these natural CaCO3-based materials display excellent mechanical properties that are difficult t ...

2018

Cross-talk between emulsion drops: how are hydrophilic reagents transported across oil phases?

Bart Deplancke, Esther Amstad, Gianluca Nicolas Etienne, Antoine Claude Jean Vian, Marjan Biocanin

Emulsion drops are frequently used as vessels, for example, to conduct biochemical reactions in small volumes or to perform screening assays at high throughputs while consuming minimal sample volumes. These applications typically require drops that do not ...

2018

Microfluidic Production of Capsules-in-Capsules for Programed Release of Multiple Ingredients

Esther Amstad

Capsules with thin shells have a high‐loading capacity and are thus well‐suited containers for reagents that must be stored in confined volumes. Capsules contained in larger capsules, so‐called double capsules, allow the encapsulation of distinct reagents ...

Wiley2018

Microfluidic device for real-time formulation of reagents and their subsequent encapsulation into double emulsions

Sebastian Maerkl, Esther Amstad, Zoe Newell Swank, Jui-Chia Chang

Emulsion drops are often employed as picoliter-sized containers to perform screening assays. These assays usually entail the formation of drops encompassing discrete objects such as cells or microparticles and reagents to study interactions between the dif ...

Nature Research2018

Fabrication of Hexagonal-Prismatic Granular Hydrogel Sheets

Huachuan Du, Esther Amstad, Alice Cont, Mathias Steinacher

Natural soft materials are often composed of proteins that self-assemble into well-defined structures and display mechanical properties that cannot be matched by manmade materials. These materials are frequently mimicked with hydrogels whose mechanical pro ...

2018

Capsules made from prefabricated thin films

Esther Amstad

American Association for the Advancement of Science2018

Scalable production of double emulsion drops with thin shells

Esther Amstad, Antoine Claude Jean Vian

Double emulsions are often used as containers to perform high throughput screening assays and as templates for capsules. These applications require double emulsions to be mechanically stable such that they do not coalesce during processing and storage. A p ...

2018

Production of monodisperse drops from viscous fluids

Esther Amstad, Mathias Steinacher, Armend Gazmeno Hati, Tomasz Radoslaw Szymborski

Drops are often used as picoliter-sized reaction vessels, for example for high-throughput screening assays, or as templates to produce particles of controlled sizes and compositions. Many of these applications require close control over the size of drops, ...

2018

Page 4 sur 5