ORCID Profile
0000-0003-4937-0769
Current Organisation
KU Leuven
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: The Electrochemical Society
Date: 07-08-2014
Abstract: We investigate the crystallization of amorphous Ge alloy layers on silicon substrates for optical and electronic applications. Amorphous GeSn layers are obtained by limiting the adatom surface mobility during deposition. Subsequent annealing transforms the amorphous layer into single-crystalline GeSn by solid phase epitaxy. Structural investigation shows excellent structural quality for layers with up to 6.1% Sn. The surface and interface are smooth thanks to the low thermal budget. The GeSn layers show a significant increase in optical absorption with respect to Ge. We demonstrate tensile-strained GeSn p-type pMOSFET devices on Si(111) substrates using solid phase epitaxy of amorphous GeSn layer, with 4.5% Sn and +0.33% tensile strain. Structural investigation showed the presence of twin defects in the GeSn layers after crystallization. In this work we present a method to effectively suppress the formation of twin defects. Furthermore we demonstrate the crystallization of multiple amorphous layers in a 1 step anneal.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TC05953A
Abstract: A nitrogen doped carbon aerogel was used as a substrate for the atomic layer deposition of TiO 2 and ZnO layers in various thicknesses.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA06446J
Abstract: A highly ordered mesoporous NiS x /nitrogen-doped mesoporous carbon (NiS x /NMC) nanohybrid as a bifunctional oxygen electrocatalyst for rechargeable Zn–air batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9NA00188C
Abstract: Carbon black is chemically activated by selective TiO 2 photocatalytic oxidation functionalizing the graphitic carbon fraction, while mineralizing amorphous carbon.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA06945J
Abstract: A novel organic–inorganic multilayer framework membrane was constructed by using graphene and sulfonated amino-polystyrene nanospheres (rGO@SAPS) through a chemical self-assembly process for selective separation of Li + from saline lakes under an electric field.
Publisher: American Chemical Society (ACS)
Date: 16-12-2021
DOI: 10.1021/ACS.LANGMUIR.1C02533
Abstract: Understanding the colloidal stability and aggregation behavior of TiO
Publisher: American Chemical Society (ACS)
Date: 05-12-2018
Publisher: American Chemical Society (ACS)
Date: 06-09-2019
DOI: 10.1021/ACS.BIOMAC.9B00907
Abstract: Naturally, cells reside in three-dimensional (3D) microenvironments composed of biopolymers that guide cellular behavior via topographical features as well as through mechanical and biochemical cues. However, most studies describing the influence of topography on cells' behavior are performed on rigid and synthetic two-dimensional substrates. To design systems that more closely resemble native microenvironments, herein we develop 3D nanocomposite hydrogels consisting of starch nanocrystals (SNCs) embedded in a gelatin matrix. The incorporation of different concentrations of SNCs (0.05, 0.2, and 0.5 wt %) results in an increase of compressive modulus when compared to hydrogels without SNCs, without affecting the swelling ratio, thus providing a tunable system. Confirming the cytocompatibility of the novel composites, the viability of encapsulated L929 fibroblasts is >90% in all hydrogels. The cellular metabolic activity and DNA content are similar for all formulations and increase over time, indicating that the fibroblasts proliferate within the hydrogels. After 4 d of culture, Live/Dead staining and F-actin/nuclei staining show that the encapsulated fibroblasts develop an elongated morphology in the hydrogels. On the other hand, encapsulated chondrogenic progenitor ATDC5 cells also maintain a viability around 90% but display a round morphology, especially in the hydrogels with SNCs, indicating a potential application of the materials for cartilage tissue engineering. We believe that topographical and mechanical cues within 3D microenvironments can be a powerful tool to instruct cells' behavior and that the developed gelatin/SNC nanocomposite warrants further study.
No related grants have been discovered for Jin Won Seo.