Publications by Josef Andreas Schuler

Combining thermal insulation and mobile communication in buildings: influence of laser-treated glazing on microwave propagation

Andreas Schueler, Josef Andreas Schuler, Luc Burnier, Jérémy Jacques Antonin Fleury, Héloïse Ludivine Delaporte

With the purpose of reducing the heating energy in buildings, it is common practice to install energy-efficient windows to increase the thermal insulation of a façade. These insulating glass units (IGIJ) include a thin silver coating acting as an infrared ...

IOP2022

Electronic properties and ion migration of “in vacuo” lithiated nanoporous WO3:Mo thin films

Andreas Schueler, Josef Andreas Schuler, Luc Burnier, Jérémy Jacques Antonin Fleury

Electrochromic (EC) glazing helps manage daylight and solar heat gains in building, thereby allowing a reduction in energy consumption caused by heating, cooling, and artificial lighting. This study relates the optical and electronic properties of nanoporo ...

2022

VO2:Ge based thermochromic solar absorber coatings

Josef Andreas Schuler, Anna Krammer

Flat plate solar collectors face the problem of overheating and the ensuing high thermal stresses and general collector damage lead to high maintenance costs. To address this challenge, absorber coatings with a passive optical switch at critically high ope ...

ELSEVIER2022

Measurement of the inclusive and differential t(t)over-bar gamma cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at root s=13 TeV

Jean-François Carlin, Rakesh Chawla, Richard Pitts, Arvind Shah, Ian Smith, Randoald Müller, Carlos Andres Peña Reyes, Jung Eung Park, Thomas Mountford, Matthias Finger, Jin Won Seo, Johannes Steen, Josef Andreas Schuler, Olivier Martin, Melody Swartz, Kyumin Lee, Hoang-Trang Lam, Maria Isabel Cordero Campana, Ananda Sankar Roy, Bertrand François, Yogesh Singh Chauhan, Xiaoqiang Wang, Miguel Fernández Ruiz, Sun Hee Kim, Jian Zhao, João Miguel das Neves Duarte, Justin Terence Notz Pekkanen, Joo Yeon Kim, Alexis Kalogeropoulos, Jae-Woo Choi, Pedro Camilo de Oliveira e Silva, Cristopher Ariel Zeballos Avila, Myun Sik Kim, Chao Wang, Yixing Chen, Aravind Kumar Chandiran, Tian Cheng, Ana Margarida Da Costa Ricardo, , , , , , , , , , , ,

Optical properties of in vacuo lithiated nanoporous WO3:Mo thin films as determined by spectroscopic ellipsometry

Andreas Schueler, Josef Andreas Schuler, Olivia Valérie Charlotte Bouvard, Luc Burnier, Maxime Lagier, Aurélien Bertinotti

Incorporation of Mo into pure WO3 thin films is of interest for electrochromic devices, as it improves colour neutrality in the dark state. Existing literature still lacks reliable quantitative data on the complex dielectric function of such coatings. In t ...

2021

Solar energy potential at the Great St Bernard Pass

Josef Andreas Schuler, Pietro Florio, David Notzon

The historical site of the Great St Bernard Pass, situated in the Alps at an elevation of 2469 m, records very high electricity consumptions. This study aims at evaluating the photovoltaic potential at the pass. The analysis was performed on the envelope s ...

IOP PUBLISHING LTD2021

Wide band-pass FSS with reduced periodicity for energy efficient windows at higher frequencies

Josef Andreas Schuler, Luc Burnier, Jérémy Jacques Antonin Fleury

A simulation model and an experimental characterization of energy saving glazing transparent to mobile communication frequency up to 40 GHz is presented. A previous study showed that laser structured energy efficient windows with a frequency selective surf ...

SPRINGER HEIDELBERG2020

Dynamics of excited interlayer states in hexagonal boron nitride monolayers

Josef Andreas Schuler, Silvan Dino Marcos Roth

Hexagonal boron nitride () is the isoelectronic but insulating counterpart of graphene. Like graphene it can easily be grown as high-quality nanotubes or as single layers on metal surfaces. Both materials can be exfoliated or transferred after single-layer ...

2020

Co-Sputtered Monocrystalline GeSn for Infrared Photodetection

Andreas Schueler, Josef Andreas Schuler, Anna Fontcuberta i Morral, Luc Burnier, Nicolas Philippe Laurent Humblot, Anna Krammer, Andrea Giunto

We demonstrate monocrystalline growth of GeSn on Ge and Si substrates by co-sputtering. We discuss the evolution of film growth with thickness, elucidating the effects of substrate temperature, sputtering source, and the importance of hydrogen dilution in ...

IEEE2020

Solar cooking potential in Switzerland: Nodal modelling and optimization

Andreas Schueler, Josef Andreas Schuler, Olivia Valérie Charlotte Bouvard, Timothée Chatelain, Luc Burnier, Dasaraden Mauree, Samson Taylor, Jérémy Jacques Antonin Fleury

Solar cooking is one possible solution to reduce the domination of fossil fuel in the domestic sector and to benefit from renewable energy. This study assesses the solar cooking potential in Switzerland. A nodal model, based on energy balance equations of ...

PERGAMON-ELSEVIER SCIENCE LTD2019

Ni3N as an Active Hydrogen Oxidation Reaction Catalyst in Alkaline Medium

Andreas Schueler, Josef Andreas Schuler, Xile Hu, Anna Krammer, Weiyan Ni

Hydroxide-exchange membrane fuel cells can potentially utilize platinum-group-metal (PGM)-free electrocatalysts, offering cost and scalability advantages over more developed proton-exchange membrane fuel cells. However, there is a lack of non-precious elec ...

Wiley-VCH Verlag GmbH2019

Color neutral nanocomposite nickel-tantalum oxide for electrochromic windows

Andreas Schueler, Josef Andreas Schuler, Olivia Valérie Charlotte Bouvard

Electrochromic windows can darken on demand to limit the solar gains entering a building to reduce the risk of overheating, while preserving the view towards the exterior. Yet, the switching speed and contrast as well as the durability of commercial produc ...

IOP2019

3D Smith charts scattering parameters frequency-dependent orientation analysis and complex-scalar multi-parameter characterization applied to Peano reconfigurable vanadium dioxide inductors

Mihai Adrian Ionescu, Andreas Schueler, Josef Andreas Schuler, Montserrat Fernandez-Bolanos Badia, Emanuele Andrea Casu, Junrui Zhang, Anna Krammer, Matteo Cavalieri, Andrei Müller

Recently, the field of Metal-Insulator-Transition (MIT) materials has emerged as an unconventional solution for novel energy efficient electronic functions, such as steep slope subthermionic switches, neuromorphic hardware, reconfigurable radiofrequency fu ...

Nature Research2019

In-situ and post annealing effect on the microstructure and the optical properties of black Cu-Co-Mn oxide spinel coating for Parabolic Trough Collector (PTC) applications

Andreas Schueler, Josef Andreas Schuler, Anna Krammer, Samaneh Daviran

The present paper deals with the deposition of Cu-Co-Mn oxides thin film by magnetron sputtering to produce a black selective coating for solar Parabolic Trough Collector (PTC) systems. The effect of temperature was studied between the nominal temperature ...

IOP Science2019

Predicting the thermal performance of thermochromic flat plate solar collectors

Andreas Schueler, Josef Andreas Schuler, Anna Krammer

A thermochromic vanadium dioxide (VO2) based absorber coating is proposed. The optical response of the multilayered absorber is first simulated, then, the spectral reflectance of the deposited absorber is measured. The determined solar absorptance and ther ...

IOP Science2019

From university to industry - challenges in upscaling optical microstructures for daylight redirection in buildings

Philippe Couty, Andreas Schueler, André Gabriel Kostro, Josef Andreas Schuler

In this paper we present some of the challenges faced when upscaling optical microstructures from a lab scale 1x1 cm sized proof of concept sample to a square meter sized object that can be installed in a building. The optical microstructure in question is ...

IOP Science2019

Solar heat gains through train windows: a non-negligible contribution to the energy balance

Josef Andreas Schuler, Olivia Valérie Charlotte Bouvard, Luc Burnier

The sector of transportation accounts for about one third of the total energy consumption in Switzerland. A monitoring campaign of the energy consumption of a regional train revealed the critical energy-consuming systems. Heating, cooling and ventilation w ...

2018

Microfabrication of curved sidewall grooves using scanning nanosecond excimer laser ablation

Patrik Willi Hoffmann, André Gabriel Kostro, Josef Andreas Schuler, Georgios Violakis, Jing Gong

Novel glazing with embedded micro-mirrors can significantly reduce the energy consumption due to cooling and lighting in buildings. Especially promising are large arrays of periodic micro compound-parabolic-concentrators (CPCs) with angular-selected transm ...

SPIE2018

Development of a novel mechanical micro-engraving method for the high-aspect-ratio microstructures of an advanced window system

André Gabriel Kostro, Josef Andreas Schuler, Jing Gong, Antoine Robert Michel Delaunay

A transparent polymer film with embedded micro mirrors is developed, and it can be attached to a window glass pane for daylighting, improving visual comfort and reducing cooling load in buildings by redirecting sunlight. Despite existing cutting-edge techn ...

2018

Towards novel glazing with seasonal dynamics based on micro compound parabolic concentrators

André Gabriel Kostro, Josef Andreas Schuler, Jing Gong

Thermal loss and overheating caused by glazing is a key issue in reducing CO2 emission and energy consumption of buildings. A novel glazing based on micro compound parabolic concentrators (CPCs) is proposed. The glazing consists of a polymer layer with emb ...

2018