Publications associées à Transport passif

Selectively permeable microcapsules

Microcapsules are appealing containers for delivering active ingredients, such as drugs and cosmetics, or conducting chemical and biological reactions on a small scale. To control the timing and location of release of these encapsulants, the shells of micr ...

EPFL2023

Charge-Selectively Permeable Self-Healing Microcapsules

Esther Amstad, Chuen-Ru Li

Microcapsules possessing a selective permeability are well-suited vessels for conducting cell studies or chemical reactions that require selective exchanges of reagents over a prolonged time. Most currently reported microcapsules are single-use delivery ca ...

WILEY2023

Information Theory in Transmembrane Transport

Solange Marie Flatt

The past decades have seen the advent of information theory in various fields, from quantum physics to cosmology. At an intermediary scale between atomic and cosmological scales are biological systems and in particular the cell, as a constitutive element o ...

EPFL2023

Boundary-layer approach to the linear karren instability

François Gallaire, Simeon Vladimirov Djambov

The present paper concerns the linear fate of transverse perturbations in a gravity-driven, thin-film flow over a soluble substrate. We propose a reduced-order model, based on a boundary-layer treatment of the solute transport and a depth-integration of th ...

Cambridge University Press2023

Efficient AC electrothermal flow (ACET) on-chip for enhanced immunoassays

Martinus Gijs, Diego Gabriel Dupouy, Muaz Salama Abdelmonem Draz

Biochemical reaction rates in microfluidic systems are known to be limited by the diffusional transport of reagents, leading often to lowered sensitivity and/or longer detection times in immunoassays. Several methods, including electrically powering electr ...

ROYAL SOC CHEMISTRY2023

Water as a contrast agent for imaging interfacial structure and ion transport in giant vesicles

David Roesel

Hydrated lipid bilayer membranes and their asymmetry play a fundamental role in living cells by maintaining and regulating concentration gradients between cells, their environment, and their compartments. They achieve this not only through various channels ...

EPFL2022

Significance of Receptor Mobility in Multivalent Binding on Lipid Membranes

Maartje Martina Cornelia Bastings, Diana Kornelia Morzy

Numerous key biological processes rely on the concept of multivalency, where ligands achieve stable binding only upon engaging multiple receptors. These processes, like viral entry or immune synapse formation, occur on the diffusive cellular membrane. One ...

Wiley-VCH Verlag GmbH2022

Cholesterol Hinders the Passive Uptake of Amphiphilic Nanoparticles into Fluid Lipid Membranes

Francesco Stellacci, Matteo Gasbarri, Ester Canepa, Giulia Rossi

Plasma membranes represent pharmacokinetic barriers for the passive transport of site-specific drugs within cells. When engineered nanoparticles (NPs) are considered as transmembrane drug carriers, the plasma membrane composition can affect passive NP inte ...

AMER CHEMICAL SOC2021

Coating Porous MXene Films with Tunable Porosity for High-Performance Solid-State Supercapacitors

Jakob Heier, Sina Abdolhosseinzadeh

Two-dimensional MXenes with their outstanding physical and chemical properties have been extensively used in numerous fields such as electrochemical energy storage, catalysis, and sensing. In these applications, high active surface area and facilitated dif ...

WILEY-V C H VERLAG GMBH2021

Rapid screening of nanopore candidates in nanoporous single-layer graphene for selective separations using molecular visualization and interatomic potentials

Luc Sébastien Bondaz, Rohit Karnik

Nanoporous single-layer graphene is promising as an ideal membrane because of its extreme thinness, chemical resistance, and mechanical strength, provided that selective nanopores are successfully incorporated. However, screening and understanding the tran ...

AIP Publishing2021

Direct observation of water-mediated single-proton transport between hBN surface defects

Aleksandra Radenovic, Evgenii Glushkov, Ahmet Avsar, Jean Camille Benjamin Comtet, Benoît Grosjean

Super-resolution microscopy of defects in a two-dimensional material unveils the transport of single proton charges at solid/water interfaces. Aqueous proton transport at interfaces is ubiquitous and crucial for a number of fields, ranging from cellular tr ...

2020

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

Empower or Thwart? Insights from Vienna and Helsinki regarding the role of public authorities in the development of MaaS schemes

Matthias Finger, Maxime Ugo Julien Audouin

Recent advances in information and communication technologies have paved the way for the development of new transport solutions that have the potential to revolutionise mobility. At the forefront of those developments, the concept of Mobility-as-a-Service ...

ELSEVIER SCIENCE BV2019

Linking Morphology and Multi-Physical Transport in Structured Photoelectrodes

Sophia Haussener, Marco Cantoni, Yannick Kenneth Gaudy, Silvan Suter

Semiconductors with complex anisotropic morphologies in solar to chemical energy conversion devices enhance light absorption and overcome limiting charge transport in the solid. However, structuring the solid-liquid interface has also implications on conce ...

2018

Transcellular Pathways in Lymphatic Endothelial Cells Regulate Changes in Solute Transport by Fluid Stress

Melody Swartz, Marco Pisano, Witold Waldemar Kilarski, Esra Güç, Valentina Triacca

Rationale: The transport of interstitial fluid and solutes into lymphatic vessels is important for maintaining interstitial homeostasis and delivering antigens and soluble factors to the lymph node for immune surveillance. Transendothelial transport across ...

Lippincott Williams & Wilkins2017

The role of the equatorial ligands for the redox behavior, mode of cellular accumulation and cytotoxicity of platinum(IV) prodrugs

Hristo Plamenov Varbanov, Sarah Theiner

The current study aims to elucidate the possible reasons for the significantly different pharmacological behavior of platinum(IV) complexes with cisplatin-, carboplatin- or nedaplatin-like cores and how this difference can be related to their main physicoc ...

Elsevier2016

Fixation and Permeabilization Approaches for Scanning Electrochemical Microscopy of Living Cells

Hubert Girault, Horst Pick, Andreas Stephan Lesch, Fernando Cortes Salazar, Tzu-En Lin, Alexandra Bondarenko, Petar Stupar

Scanning electrochemical microscopy (SECM) has been widely used for the electrochemical imaging of dynamic topographical and metabolic changes in alive adherent mammalian cells. However, extracting intracellular information by SECM is challenging, since it ...

American Chemical Society2016

An Ohmic model for electrokinetic flows of binary asymmetric electrolytes

Alexandre Louis André Persat

The transport of electrolytes in electric fields is a ubiquitous phenomenon commonly harnessed in microfluidics. A classic leaky dielectric model for flow generated by electric fields accurately predicts electrohydrodynamic transport phenomenon but is vali ...

Elsevier Science London2016

Benzimidazole derivative small-molecule 991 enhances AMPK activity and glucose uptake induced by AICAR or contraction in skeletal muscle

Kei Sakamoto, Maria Deak, Caterina Collodet, Laurent Bultot

AMP-activated protein kinase (AMPK) plays diverse roles and coordinates complex metabolic pathways for maintenance of energy homeostasis. This could be explained by the fact that AMPK exists as multiple heterotrimer complexes comprising a catalytic alpha-s ...

Amer Physiological Soc2016

Direct measurement of ambipolar diffusion in bulk silicon by ultrafast infrared imaging of laser-induced microplasmas

Alexandros Mouskeftaras

Carrier kinetics in the density range of N = 10(17) - 10(20) cm(-3) is investigated inside the bulk of crystalline silicon. Most conventional experimental techniques used to study carrier mobility are indirect and lack sensitivity because of charging effec ...

Amer Inst Physics2016