Searched for: author%3A%22Liu%2C+K.%22
(1 - 20 of 20)
document
Zhu, Jia-Ning (author), Liu, K. (author), Riemslag, A.C. (author), Tichelaar, F.D. (author), Borisov, Evgenii (author), Yao, Xiyu (author), Popovich, Anatoly (author), Huizenga, R.M. (author), Hermans, M.J.M. (author), Popovich, V. (author)
Superelastic metallic materials possessing large recoverable strains are widely used in automotive, aerospace and energy conversion industries. Superelastic materials working at high temperatures and with a wide temperature range are increasingly required for demanding applications. Until recently, high-temperature superelasticity has only...
journal article 2023
document
Liu, K. (author), Sluiter, M.H.F. (author)
In a material under stress, grain boundaries may give rise to stress discontinuities. Stress localization is crucial to materials' behavior such as segregation, precipitation, and void nucleation. Here, the stress state at a grain boundary perpendicular to a uniaxial external stress is studied systematically. The grain boundary with the most...
journal article 2023
document
Liu, K. (author)
The urgent threat of global warming and the demand for sustainable fuels have made the electroreduction of CO2 a priority, due to its possibility in closed-loop cycle of carbon. The energy conversion and strategy can diminish the content of CO2 in the atmosphere, convert renewable electricity into chemical energy and store it in chemical bonds,...
doctoral thesis 2022
document
Burdyny, T.E. (author), Sassenburg, M. (author), de Rooij, R. (author), Nessbit, Nathan (author), Kas, R. (author), Chandrashekar, S. (author), Firet, N.J. (author), Yang, K. (author), Liu, K. (author), Blommaert, M.A. (author), Kolen, M. (author), Ripepi, D. (author), Smith, W.A. (author)
Continued advancements in the electrochemical reduction of CO 2 (CO 2RR) have emphasized that reactivity,selectivity, and stability are not explicit material properties butcombined effects of the catalyst, double-layer, reaction environ-<br/>ment, and system configuration. These realizations have steadily built upon the foundational work...
journal article 2022
document
Yuan, Xiangyang (author), Cui, Endian (author), Liu, K. (author), Jiang, Ying (author), Yang, Xiaoyan (author), Tang, Jianfeng (author), Yang, Lu (author), Liao, Xiaoling (author), Zhao, Yanan (author)
In this work, different lanthanides (Tm<sup>3+</sup>, Er<sup>3+</sup>; Yb<sup>3+</sup>, Ho<sup>3+</sup>, Nd<sup>3+</sup>) were doped into NaYF<sub>4</sub> via a high-temperature coprecipitation method, and followed by SiO<sub>2</sub> coating to improve the water dispersibility, resulting in NaYF<sub>4</sub>:Tm<sup>3+</sup>, Er<sup>3+</sup>...
journal article 2022
document
Liu, K. (author), Ma, M. (author), Wu, Longfei (author), Valenti, M. (author), Cardenas-Morcoso, Drialys (author), Hofmann, Jan P. (author), Bisquert, Juan (author), Gimenez, Sixto (author), Smith, W.A. (author)
Au-Cu bimetallic thin films with controlled composition were fabricated by magnetron sputtering co-deposition, and their performance for the electrocatalytic reduction of CO <sub>2</sub> was investigated. The uniform planar morphology served as a platform to evaluate the electronic effect isolated from morphological effects while minimizing...
journal article 2019
document
Liu, K. (author), Vardon, P.J. (author), Hicks, M.A. (author)
Internal erosion, or piping, has been attributed as a major cause of dam and embankment failures. Most prediction models for predicting piping use the hydraulic gradient between the upstream and downstream water levels as an indicator. No explicit consideration is made regarding preferential pathways, although piping usually initiates from a...
journal article 2019
document
Liu, K. (author), Smith, W.A. (author), Burdyny, Thomas (author)
review 2019
document
Liu, K. (author), Vardon, P.J. (author), Hicks, M.A. (author)
A data assimilation framework, utilising measurements of pore water pressure to sequentially improve the estimation of soil hydraulic parameters and, in turn, the prediction of slope stability, is proposed. Its effectiveness is demonstrated for an idealised numerical example involving the spatial variability of saturated hydraulic...
journal article 2018
document
Ma, M. (author), Liu, K. (author), Shen, J. (author), Kas, R. (author), Smith, W.A. (author)
In this work, the highly selective and stable electrocatalytic reduction of CO<sub>2</sub> to CO on nanostructured Ag electrocatalysts is presented. The Ag electrocatalysts are synthesized by the electroreduction of Ag<sub>2</sub>CO<sub>3</sub> formed by in situ anodic-etching of Ag foil in a KHCO<sub>3</sub> electrolyte. After 3 min of this...
journal article 2018
document
Liu, K. (author)
<br/>
doctoral thesis 2017
document
Liu, K. (author), Vardon, P.J. (author), Hicks, M.A. (author), Arnold, P. (author)
The stability of most earth embankments is strongly influenced by the water content of the soil. The water content directly influences the suction or pore pressure in the soil, as well as the mass of material, thereby affecting the stress state and strength, and leading to changes in the stability. These aspects are coupled by the so-called soil...
journal article 2017
document
Vardon, P.J. (author), Liu, K. (author), Hicks, M.A. (author)
The determination of slope stability for existing slopes is challenging, partly due to the spatial variability of soils. Reliability-based design can incorporate uncertainties and yield probabilities of slope failure. Field measurements can be utilised to constrain probabilistic analyses, thereby reducing uncertainties and generally reducing...
journal article 2016
document
Böhm, J. (author), Bredif, M. (author), Gierlinger, T. (author), Krämer, M. (author), Lindenbergh, R.C. (author), Liu, K. (author), Michel, F. (author), Sirmacek, B. (author)
Current 3D data capturing as implemented on for example airborne or mobile laser scanning systems is able to efficiently sample the surface of a city by billions of unselective points during one working day. What is still difficult is to extract and visualize meaningful information hidden in these point clouds with the same efficiency. This...
journal article 2016
document
Liu, K. (author), Hicks, M.A. (author), Vardon, P.J. (author), Jommi, C. (author)
Piping has been attributed as a major cause of dam and embankment failures. Current national prediction models to predict piping use the hydraulic gradient between the upstream and downstream water levels as an indicator. They are deterministic and take no account of preferential pathways. However, piping usually initiates from a discrete...
conference paper 2015
document
Liu, K. (author), Vardon, P.J. (author), Arnold, P. (author), Hicks, M.A. (author)
Hysteresis is a well-known phenomenon that exists in the soil water retention behaviour of unsaturated soils. However, there is little research on the effects of hysteresis on slope stability. If included in slope stability analyses, commonly the suction in the unsaturated zone is taken as non-hysteretic. In this paper, the authors investigate...
conference paper 2015
document
Liu, K. (author), Xia, K. (author), Bauer, G.E.W. (author)
We compute the shot noise in ballistic and disordered Fe|MgO|Fe tunnel junctions by a wave-function-matching method. For tunnel barriers with ?5 atomic layers we find a suppression of the Fano factor as a function of the magnetic configuration. In the antiparallel configuration the shot noise is full up to a threshold bias that indicates the...
journal article 2012
document
Liu, K. (author)
doctoral thesis 1992
document
Liu, K. (author), Noordhoek, C. (author), van Delft, D.R.V. (author)
report 1991
document
Liu, K. (author), Noordhoek, C. (author), van Delft, D.R.V. (author), van de Vegte, G.J. (author)
report 1990
Searched for: author%3A%22Liu%2C+K.%22
(1 - 20 of 20)