Publications by Stefan Guldin | EPFL Graph Search

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Quantifying the Solution Structure of Metal Nanoclusters Using Small-Angle Neutron Scattering

Francesco Stellacci, Stefan Guldin, Ye Yang, Zhi Luo, Huayan Yang

Metal nanoclusters are a unique class of synthetic material, as their crystal structures can be resolved using X-ray diffraction, and their chemical formula can be precisely determinated from mass spectroscopy. However, a complete structure characterizatio ...

WILEY-V C H VERLAG GMBH2022

Microfluidics of binary liquid mixtures with temperature-dependent miscibility

Esther Amstad, Stefan Guldin

Liquid-liquid microfluidic systems rely on the intricate control over the fluid properties of either miscible or immiscible mixtures. Herein, we report on the use of partially miscible binary liquid mixtures that lend their microfluidic properties from a h ...

ROYAL SOC CHEMISTRY2020

Probing the interaction of nanoparticles with small molecules in real time via quartz crystal microbalance monitoring

Stefan Guldin, Ye Yang, Nikolaos Nianias, Runzhang Qi

Despite extensive advances in the field of molecular recognition, the real-time monitoring of small molecule binding to nanoparticles (NP) remains a challenge. To this end, we report on a versatile approach, based on quartz crystal microbalance with dissip ...

ROYAL SOC CHEMISTRY2019

Freestanding Ultrathin Nanoparticle Membranes Assembled at Transient Liquid-Liquid Interfaces

Francesco Stellacci, Stefan Guldin, Zhi Luo, Sergio Allegri, Benjamin Timothée Nicolas Le Ouay

A synthetic route is presented for the realization of ultrathin freestanding nanoparticle membranes that are built of gold nanoparticles protected with trimethoxysilane-bearing ligands. The mechanism relies on interfacial assembly in an oil-water mixture. ...

Wiley-Blackwell2016

Phase transfer based chemical sensing

Francesco Stellacci, Stefan Guldin, Yang Ye

The present invention relates to a phase transfer based chemical sensing, specifically to a method for selective separation, detection and quantification of a polycyclic organic compound in a sample and a method for selective extraction of a polycyclic org ...

2016

Lessons Learned: From Dye-Sensitized Solar Cells to All-Solid-State Hybrid Devices

Henry Snaith, Stefan Guldin

The field of solution-processed photovoltaic cells is currently in its second spring. The dye-sensitized solar cell is a widely studied and longstanding candidate for future energy generation. Recently, inorganic absorber-based devices have reached new rec ...

Wiley-V C H Verlag Gmbh2014

High-Surface-Area Porous Platinum Electrodes for Enhanced Charge Transfer

Michael Graetzel, Francesco Stellacci, Aswani Yella, Morgan Mertens Stefik, Stefan Guldin, Yelin Hu, Marcel Roland Schreier

Cobalt-based electrolytes are highly tunable and have pushed the limits of dye-sensitized solar cells, enabling higher open-circuit voltages and new record efficiencies. However, the performance of these electrolytes and a range of other electrolytes suffe ...

Wiley-V C H Verlag Gmbh2014