39 citations · 146 across the 7 of their papers we have counts for
7 papers
Slippery Polymer Monoliths: Surface Functionalization with Ordered MoS2 Microparticle Arrays
Weijia Han, Siwei Luo, Dirk Bröker +4
Components of technical systems and devices often require self-lubricating properties, which are implemented by means of dry lubricants. However, continuous lubricant coatings on t…
Evaluation of 3D gold nanodendrite layers obtained by templated galvanic displacement reactions for SERS sensing and heterogeneous catalysis
Weijia Han, Elzbieta Stepula, Michael Philippi +2
Dense layers of overlapping three-dimensional (3D) gold nanodendrites characterized by high specific surfaces as well as by abundance of sharp edges and vertices creating high dens…
Free-sustaining Three-dimensional S235 Steel-based Porous Electrocatalyst for Highly Efficient and Durable Oxygen Evolution
Weijia Han, Karsten Küpper, Peilong Hou +5
A novel oxygen evolution reaction (OER) catalyst (3D S235-P steel) based on steel S235 substrate has been successfully prepared via a facile one-step surface modification. The stan…
Steel-Based Electrocatalysts for Efficient and Durable Oxygen Evolution in Acidic Media
Helmut Schäfer, Karsten Küpper, Mercedes Schmidt +10
High overpotentials, particularly an issue of common anode materials, hamper the process of water electrolysis for clean energy generation. Thanks to immense research efforts up to…
Nanostructured submicron block copolymer dots by sacrificial stamping: a potential preconcentration platform for locally resolved sensing, chemistry and cellular interactions
Peilong Hou, Weijia Han, Michael Philippi +2
Classical contact lithography involves patterning of surfaces by embossing or by transfer of ink. We report direct lithographic transfer of parts of sacrificial stamps onto counter…
Ordered topographically patterned silicon by insect-inspired capillary submicron stamping
Weijia Han, Peilong Hou, Shamaila Sadaf +3
Insect-inspired capillary submicron stamping and subsequent surface-limited metal-assisted chemical etching (MACE) with ammonium bifluoride as HF source is employed for high-throug…
Electrooxidation of a cobalt based steel in LiOH: a non-noble metal based electro-catalyst suitable for durable water-splitting in an acidic milieu
Helmut Schäfer, Karsten Küpper, Klaus Müller-Buschbaum +7
The use of proton exchange membrane (PEM) electrolyzers is the method of choice for the conversion of solar energy when frequently occurring changes of the current load are an issu…