Cojocaru-Mirédin, O.; Choi, P.; Schwarz, T.; Würz, R.; Raabe, D.: Exploring the internal interfaces at the atomic-scale in CIGS thin-films solar cells. DPG-Frühjahrstagung Modern, Atom Probe Tomography, TU Berlin, Germany (2012)
Cojocaru-Mirédin, O.; Schwarz, T.; Choi, P.; Würz, R.; Raabe, D.: Exploring the internal interfaces at the atomic-scale in thin-film solar cells. Seminar Talk at Helmholtz Zentrum Berlin (HZB), Berlin, Germany (2012)
Li, Y. J.; Choi, P.; Goto, S.; Borchers, C.; Raabe, D.; Kirchheim, R.: Evolution of strength and microstructure during annealing of heavily cold-drawn 6.3 GPa hypereutectoid pearlitic steel wire. 53rd International Field Emission Symposium (IFES), Tascaloosa, AL, USA (2012)
Choi, P.: Characterization of advanced functional and structural materials using Atom Probe Tomography. Inauguration symposium for the Atom Probe facilities ETH Zürich, Zürich, Switzerland (2011)
Cojocaru-Mirédin, O.; Choi, P.; Würz, R.; Abou-Ras, D.; Raabe, D.: Explorer les interfaces à l’échelle atomique dans les cellules photovoltaïques CIGSe. Commissariat à l’Energie Atomique et aux Energies Alternatives, Grenoble, France (2011)
Herbig, M.; Li, Y.; Choi, P.: Atomic Analysis of Concentration Changes at Interfaces by Atom Probe Tomography. SFB 761 Doktorandenseminar, RWTH Aachen, Germany (2011)
Cojocaru-Mirédin, O.; Choi, P.; Abou-Ras, D.; Wuerz, R.; Liu, T.; Schmidt, S. S.; Caballero, R.; Raabe, D.: Characterization of internal interfaces in Cu(In,Ga)Se2 thin-film solar cells using Atom Probe Tomography. Euromat 2011, Montpellier, France (2011)
Choi, P.: Study of local chemical gradients in advanced precipitation hardened steel using atom probe tomography. THERMEC 2011, Québec City, QC, Canada (2011)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
In order to develop more efficient catalysts for energy conversion, the relationship between the surface composition of MXene-based electrode materials and its behavior has to be understood in operando. Our group will demonstrate how APT combined with scanning photoemission electron microscopy can advance the understanding of complex relationships…
This project studies the mechanical properties and microstructural evolution of a transformation-induced plasticity (TRIP)-assisted interstitial high-entropy alloy (iHEA) with a nominal composition of Fe49.5Mn30Co10Cr10C0.5 (at. %) at cryogenic temperature (77 K). We aim to understand the hardening behavior of the iHEA at 77 K, and hence guide the future design of advanced HEA for cryogenic applications.
Statistical significance in materials science is a challenge that has been trying to overcome by miniaturization as in micropillar compression. However, this process is still limited to 4-5 tests per parameter variance, i.e. Size, orientation, grain size, composition, etc. as the process of fabricating pillars and testing has to be done one by one.…
Because of their excellent corrosion resistance, high wear resistance and comparable low density, Fe–Al-based alloys are an interesting alternative for replacing stainless steels and possibly even Ni-base superalloys. Recent progress in increasing strength at high temperatures has evoked interest by industries to evaluate possibilities to employ…