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A locally conservative mixed finite element framework for coupled hydro-mechanical–chemical processes in heterogeneous porous media

Kadeethum, T. (author), Lee, S. (author), Ballarin, F. (author), Choo, J. (author), Nick, H.M. (author)

This paper presents a mixed finite element framework for coupled hydro-mechanical–chemical processes in heterogeneous porous media. The framework combines two types of locally conservative discretization schemes: (1) an enriched Galerkin method for reactive flow, and (2) a three-field mixed finite element method for coupled fluid flow and...

journal article 2021

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Modeling and Understanding the Compact Performance of h-BN Dual-Gated ReS₂ Transistor

Lee, Kookjin (author), Choi, Junhee (author), Kaczer, Ben (author), Grill, Alexander (author), Lee, Jae Woo (author), Van Beek, Simon (author), Lee, Jaewoo (author), Shin, D. (author), Lee, S. (author)

In this study, high-performance few-layered ReS₂ field-effect transistors (FETs), fabricated with hexagonal boron nitride (h-BN) as top/bottom dual gate dielectrics, are presented. The performance of h-BN dual gated ReS₂ FET having a trade-off of performance parameters is optimized using a compact model from analytical...

journal article 2021

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Shape-controlled tio₂ nanomaterials-based hybrid solid-state electrolytes for solar energy conversion with a mesoporous carbon electrocatalyst

Lim, Seung Man (author), Moon, Juyoung (author), Baek, Uoon Chul (author), Lee, Jae Yeon (author), Chae, Y. (author), Park, Jung Tae (author)

One-dimensional (1D) titanium dioxide (TiO₂₎ is prepared by hydrothermal method and incorporated as nanofiller into a hybrid polymer matrix of polyethylene glycol (PEG) and employed as a solid-electrolyte in dye-sensitized solar cells (DSSCs). Mesoporous carbon electrocatalyst with a high surface area is obtained by the...

journal article 2021

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Hyperpolarised gas filling station for medical imaging using polarised ¹²⁹Xe and ³He

Lee, Wai Tung (author), Zheng, Gang (author), Talbot, Cavin L. (author), Tong, Xin (author), D'Adam, Tim (author), Parnell, S.R. (author), de Veer, Michael (author), Jenkin, Graham (author), Polglase, Graeme R. (author)

We report the design, construction, and initial tests of a hyperpolariser to produce polarised ¹²⁹Xe and ³He gas for medical imaging of the lung. The hyperpolariser uses the Spin-Exchange Optical Pumping method to polarise the nuclear spins of the isotopic gas. Batch mode operation was chosen for the design to produce...

journal article 2021

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Self-healing capacity of Mullite-Yb₂SiO₅ environmental barrier coating material with embedded Ti₂AlC MAX phase particles

Lee, Gye Won (author), Kim, Tae Woo (author), Sloof, W.G. (author), Lee, Kee Sung (author)

Repetitive heating and cooling cycles inevitably cause crack damage of hot gas components of gas turbine engines, such as blades and vanes. In this study the self-healing capacity is investigated of mullite + ytterbium monosilicate (Yb₂SiO₅) as EBC material with Ti₂AlC MAX phase particles embedded as a crack...

journal article 2021

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Vulnerable road users and the coming wave of automated vehicles: Expert perspectives

Tabone, W. (author), de Winter, J.C.F. (author), Ackermann, Claudia (author), Bärgman, Jonas (author), Baumann, Martin (author), Deb, Shuchisnigdha (author), Emmenegger, Colleen (author), Habibovic, Azra (author), Hagenzieker, Marjan (author), Hancock, P. A. (author), Happee, R. (author), Krems, Josef (author), Lee, John D. (author), Martens, Marieke (author), Merat, Natasha (author), Norman, Don (author), Sheridan, Thomas B. (author), Stanton, Neville A. (author)

Automated driving research over the past decades has mostly focused on highway environments. Recent technological developments have drawn researchers and manufacturers to look ahead at introducing automated driving in cities. The current position paper examines this challenge from the viewpoint of scientific experts. Sixteen Human Factors...

journal article 2021

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An integrated assessment of safety and efficiency of aircraft maintenance strategies using agent-based modelling and stochastic Petri nets

Lee, J. (author), Mitici, M.A. (author)

Aircraft maintenance is key for safe and efficient aircraft operations. While most studies propose cost-efficient maintenance strategies, the safety and efficiency of these strategies need to be quantified. This paper proposes a formal framework to assess the safety and efficiency of maintenance strategies by means of agent-based modelling,...

journal article 2020

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Unlikely Collaborations?: Planning Experts from both Sides of the Iron Curtain and the Making of Abuja

Fenk, Anne-Katrin (author), Lee, Rachel (author), Motylinska, Monika (author)

As a so-called “playground of the Cold War”, post-colonial sub-Saharan Africa was contested territory in the ideological power game that dominated the second half of the twentieth century. However, despite the tension between eastern and western blocs, the non-aligned nations of the “South” also provided opportunities for unlikely collaborations...

journal article 2020

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External Human–Machine Interfaces Can Be Misleading: An Examination of Trust Development and Misuse in a CAVE-Based Pedestrian Simulation Environment

Kaleefathullah, Anees Ahamed (author), Merat, Natasha (author), Lee, Yee Mun (author), Eisma, Y.B. (author), Madigan, Ruth (author), Garcia, Jorge (author), de Winter, J.C.F. (author)

Objective: To investigate pedestrians’ misuse of an automated vehicle (AV) equipped with an external human–machine interface (eHMI). Misuse occurs when a pedestrian enters the road because of uncritically following the eHMI’s message. Background: Human factors research indicates that automation misuse is a concern. However, there is no...

journal article 2020

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Drawing WS₂thermal sensors on paper substrates

Lee, M. (author), Mazaheri, Ali (author), van der Zant, H.S.J. (author), Frisenda, Riccardo (author), Castellanos-Gomez, Andres (author)

Paper based thermoresistive sensors are fabricated by rubbing WS2 powder against a piece of standard copier paper, like the way a pencil is used to write on paper. The abrasion between the layered material and the rough paper surface erodes the material, breaking the weak van der Waals interlayer bonds, yielding a film of interconnected...

journal article 2020

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High-frequency gas effusion through nanopores in suspended graphene

Roslon, I.E. (author), Dolleman, R.J. (author), Licona, H. (author), Lee, M. (author), Siskins, M. (author), Lebius, H. (author), Madauß, L. (author), Schleberger, M. (author), Alijani, F. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)

Porous, atomically thin graphene membranes have interesting properties for filtration and sieving applications. Here, graphene membranes are used to pump gases through nanopores using optothermal forces, enabling the study of gas flow through nanopores at frequencies above 100 kHz. At these frequencies, the motion of graphene is closely...

journal article 2020

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Whole-Cell Photoenzymatic Cascades to Synthesize Long-Chain Aliphatic Amines and Esters from Renewable Fatty Acids

Cha, Hee Jeong (author), Hwang, Se Yeun (author), Lee, Da Som (author), Kumar, Akula Ravi (author), Kwon, Yong Uk (author), Voß, Moritz (author), Schuiten, Eva (author), Bornscheuer, Uwe T. (author), Hollmann, F. (author)

Long-chain aliphatic amines such as (S,Z)-heptadec-9-en-7-amine and 9-aminoheptadecane were synthesized from ricinoleic acid and oleic acid, respectively, by whole-cell cascade reactions using the combination of an alcohol dehydrogenase (ADH) from Micrococcus luteus, an engineered amine transaminase from Vibrio fluvialis (Vf-ATA), and a...

journal article 2020

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Modelling cyclists’ comfort zones from obstacle avoidance manoeuvres

Lee, O.Z.A. (author), Rasch, Alexander (author), Schwab, A.L. (author), Dozza, Marco (author)

This paper introduces a framework for modelling the cyclist's comfort zone. Unlike the driver's comfort zone, little is known about the cyclist's. The framework draws on existing literature in cognitive science about driver behaviour to explain experimental results from cycling field trials, and the modelling of these results. We modelled...

journal article 2020

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Cancer-id: Toward identification of cancer by tumor-derived extracellular vesicles in blood

Rikkert, L. G. (author), Beekman, P. (author), Caro-Schuurman, J. (author), Coumans, F. A.W. (author), Enciso-Martinez, A. (author), Jenster, G. (author), Le Gac, S. (author), Lee, W. (author), Loozen, G.B. (author)

Extracellular vesicles (EVs) have great potential as biomarkers since their composition and concentration in biofluids are disease state dependent and their cargo can contain disease-related information. Large tumor-derived EVs (tdEVs, >1μm) in blood from cancer patients are associated with poor outcome, and changes in their number can be...

journal article 2020

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Flow in porous media with low dimensional fractures by employing enriched Galerkin method

Kadeethum, T. (author), Nick, H.M. (author), Lee, S. (author), Ballarin, F. (author)

This paper presents the enriched Galerkin discretization for modeling fluid flow in fractured porous media using the mixed-dimensional approach. The proposed method has been tested against published benchmarks. Since fracture and porous media discontinuities can significantly influence single- and multi-phase fluid flow, the heterogeneous and...

journal article 2020

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Operando Transmission Electron Microscopy Study of All-Solid-State Battery Interface: Redistribution of Lithium among Interconnected Particles

Basak, S. (author), Migunov, Vadim (author), Lee, Q. (author), Ganapathy, S. (author), Vijay, Ashwin (author), Ooms, F.G.B. (author), Wagemaker, M. (author), Kelder, E.M. (author), Arszelewska, Violetta (author)

With operando transmission electron microscopy visualizing the solid-solid electrode-electrolyte interface of silicon active particles and lithium oxide solid electrolyte as a model system, we show that (de)lithiation (battery cycling) does not require all particles to be in direct contact with electrolytes across length scales of a few...

journal article 2020

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Magnetic and electronic phase transitions probed by nanomechanical resonators

Siskins, M. (author), Lee, M. (author), Mañas-Valero, Samuel (author), Coronado, Eugenio (author), Blanter, Y.M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)

The reduced dimensionality of two-dimensional (2D) materials results in characteristic types of magnetically and electronically ordered phases. However, only few methods are available to study this order, in particular in ultrathin insulating antiferromagnets that couple weakly to magnetic and electronic probes. Here, we demonstrate that...

journal article 2020

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An Efficient High-Throughput LZ77-Based Decompressor in Reconfigurable Logic

Fang, J. (author), Chen, Jianyu (author), Lee, Jinho (author), Al-Ars, Z. (author), Hofstee, H.P. (author)

To best leverage high-bandwidth storage and network technologies requires an improvement in the speed at which we can decompress data. We present a “refine and recycle” method applicable to LZ77-type decompressors that enables efficient high-bandwidth designs and present an implementation in reconfigurable logic. The method refines the write...

journal article 2020

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Tetrameric architecture of an active phenol-bound form of the AAA⁺ transcriptional regulator DmpR

Park, Kwang Hyun (author), Kim, S. (author), Lee, Su Jin (author), Cho, Jee Eun (author), Patil, Vinod Vikas (author), Dumbrepatil, Arti Baban (author), Song, Hyung Nam (author), Ahn, Woo Chan (author), Joo, C. (author)

The Pseudomonas putida phenol-responsive regulator DmpR is a bacterial enhancer binding protein (bEBP) from the AAA⁺ ATPase family. Even though it was discovered more than two decades ago and has been widely used for aromatic hydrocarbon sensing, the activation mechanism of DmpR has remained elusive. Here, we show that phenol-bound...

journal article 2020

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Photobiocatalytic synthesis of chiral secondary fatty alcohols from renewable unsaturated fatty acids

Zhang, W. (author), Lee, Jeong Hoo (author), Younes, S.H.H. (author), Tonin, F. (author), Hagedoorn, P.L. (author), Pichler, Harald (author), Baeg, Yoonjin (author), Park, Jin-Buang (author), Hollmann, F. (author), Kourist, Robert (author)

En route to a bio-based chemical industry, the conversion of fatty acids into building blocks is of particular interest. Enzymatic routes, occurring under mild conditions and excelling by intrinsic selectivity, are particularly attractive. Here we report photoenzymatic cascade reactions to transform unsaturated fatty acids into...

journal article 2020