Synthesis of nano-scale fast ion conducting cubic Li Report Title A solution-based process was investigated for synthesizing cubic Li7La3Zr2O12 (LLZO), which is known to exhibit the unprecedented combination of fast ionic conductivity, and stability in air and against Li. Sol–gel chemistry was developed to prepare solid metal–oxide networks consisting of 10 nm cross-links that formed the cubic ...

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Climate-conflict research: some reflections on the way forward Report Title A decade of systematic research on climate change and armed conflict has revealed a number of interesting patterns but few results that are robust across studies. This essay takes stock of the quantitative empirical literature, identifies central limitations, and presents five priorities for future research in the field...

Effect of nitrogen post-doping on a commercial platinum–ruthenium/carbon anode catalyst Report Title This work investigates the effects of after-the-fact chemical modification of a state-of-the-art commercial carbonsupported PtRu catalyst for direct methanol fuel cells (DMFCs). A commercial PtRu/C (JM HiSPEC-10000) catalyst is post-doped with nitrogen by ion-implantation, where “post-doped” den...

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This paper is concerned with a priori error estimates for the piecewise linear nite element approximation of the classical obstacle problem. We demonstrate by means of two onedimensional counterexamples that the L2-error between the exact solution u and the nite element approximation uh is typically not of order two even if the exact solution is in H 2(Ω) and an estimate of the form ‖u − uh‖H1 ...

We study a continuous-time game of strategic experimentation in which the players try to assess the failure rate of some new equipment or technology. Breakdowns occur at the jump times of a Poisson process whose unknown intensity is either high or low. In marked contrast to existing models, we find that the cooperative value function does not exhibit smooth pasting at the efficient cut-off beli...

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A novel femtosecond-gated, high-resolution, frequency-shifted shearing interferometry technique for probing preplasma expansion in ultra-intense laser experimentsa) Report Title Ultra-intense laser-matter interaction experiments (>1018 W/cm2) with dense targets are highly sensitive to the effect of laser “noise” (in the form of pre-pulses) preceding the main ultra-intense pulse. These system-de...

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