1. Esterification Product Protection Strategies for Direct and Selective Methane Conversion 

   Blankenship A.N.; Ravi M.; van Bokhoven J.A. (2021)

   Chimia

   A scale-flexible process for the direct and selective oxidation of methane to primary oxygenates is of great interest, however, a commercially feasible approach has yet to be realized due to a number of challenges. Low product yields imposed by a well-established selectivity-conversion limit are particularly burdensome for direct methane-to-methanol chemistry. One strategy that has emerged to break out of this limit is the in situ ...

   Journal Article

2. Transcranial Random Noise Stimulation Acutely Lowers the Response Threshold of Human Motor Circuits 

   Potok W.; Bächinger M.; van der Groen O.; et al. (2021)

   The Journal of neuroscience : the official journal of the Society for Neuroscience

   Transcranial random noise stimulation (tRNS) over cortical areas has been shown to acutely improve performance in sensory detection tasks. One explanation for this behavioral effect is stochastic resonance (SR), a mechanism that explains how signal processing in nonlinear systems can benefit from added noise. While acute noise benefits of electrical RNS have been demonstrated at the behavioral level as well as in in vitro preparations of ...

   Journal Article

3. A Method for Spatial Quantification of Water in Microporous Layers of Polymer Electrolyte Fuel Cells by X-ray Tomographic Microscopy 

   Chen Y.C.; Berger A.; De Angelis S.; et al. (2021)

   ACS Applied Materials & Interfaces

   A microporous layer (MPL) is typically added to the gas diffusion layer of polymer electrolyte fuel cells (PEFCs) to promote cell performance and water management. The transport mechanism of the water through the MPL is, however, not well understood due to its small pores (20-500 nm). Here, we demonstrate that polychromatic X-ray tomographic microscopy (XTM) can be used to determine the porosity and the spatial distribution of water in ...

   Journal Article

4. Formal safety verification of unknown continuous-time systems: A data-driven approach 

   Lavaei A.; Nejati A.; Jagtap P.; et al. (2021)

   HSCC 2021 - Proceedings of the 24th International Conference on Hybrid Systems: Computation and Control (part of CPS-IoT Week)

   This work studies formal verification of continuous-time continuous-space systems with unknown dynamics against safety specifications. The proposed framework is based on a data-driven construction of barrier certificates using which the safety of unknown systems is verified via a finite set of data collected from trajectories of systems with a priori guaranteed confidence. In the proposed scheme, we first cast the original safety problem ...

   Conference Paper

5. Low ppm CuBr-Triggered Atom Transfer Radical Polymerization under Mild Conditions 

   Whitfield R.; Parkatzidis K.; Bradford K.G.E.; et al. (2021)

   Macromolecules

   Conventional atom transfer radical polymerization, also referred to as traditional or normal ATRP, typically operates in the presence of large amounts of a CuBr activator and at relatively high temperatures (>60 °C). In this work, we report that ppm concentrations of CuBr are capable of triggering an efficient ATRP reaction at ambient temperature. In the presence of an excess ligand and the absence of any external CuBr2 deactivator, narrow ...

   Journal Article

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