Alexander John Cruz

• PhD Materials Science and Engineering | Doctor of Engineering Science
• Staff Scientist - Science Outreach Initiatives at KU Leuven | Baker Hughes

ZIF-8 was synthesized by subjecting ZnO thin films deposited via plasma-enhanced atomic layer deposition to a 2-methylimidazole vapor. The impact of the conversion time as well as the density and thickness of the ZnO precursor on the resulting ZIF-8 layers were investigated. Grazing Incidence X-ray diffraction reveals a preferred (100) or (111) ori...

Photolithographie In der Zuschrift auf S. 25872 berichten Rob Ameloot et al. über die Herstellung von Ionogelfilmen und -mustern durch chemische Dampfabscheidung von ionischen Flüssigkeiten.

Photolithography In their Communication on page 25668, Rob Ameloot et al. report the fabrication of ionogel films and patterns by chemical vapor deposition of ionic liquids.

Film deposition and high‐resolution patterning of ionic liquids (ILs) remain a challenge, despite a broad range of applications that would benefit from this type of processing. Here, we demonstrate for the first time the chemical vapor deposition (CVD) of ILs. The IL‐CVD method is based on the formation of a non‐volatile IL through the reaction of...

Film deposition and high‐resolution patterning of ionic liquids (ILs) remain a challenge, despite a broad range of applications that would benefit from this type of processing. Here, we demonstrate for the first time the chemical vapor deposition (CVD) of ILs. The IL‐CVD method is based on the formation of a non‐volatile IL through the reaction of...

In this research, a novel governing mechanism has been proposed for the formation of conversion coating on the thermal oxide film of Advanced High Strength Stainless Steels (AHSSS). These new lightweight and engineered materials are being designed to impart emission reduction and solid performance. This coating has been characterized using advanced...

Vapor-phase fabrication of the metal–organic framework ZIF-8 through the conversion of precursors prepared by physical, atomic, and molecular layer deposition.

Thin films of crystalline and porous metal–organic frameworks (MOFs) have great potential in membranes, sensors, and microelectronic chips. While the morphology and crystallinity of MOF films can be evaluated using widely available techniques, characterizing their pore size, pore volume, and specific surface area is challenging due to the low amoun...

Thin films of crystalline porous materials have great potential in membranes, sensors, and microelectronics. Still, characterizing their pore size, pore volume, and specific surface area is challenging. In article number 2006993, Rob Ameloot and co‐workers discuss positron annihilation lifetime spectroscopy, represented by the bees lighting up insi...

Metal–organic frameworks (MOFs) offer disruptive potential in micro- and optoelectronics because of the unique properties of these microporous materials. Nanoscale patterning is a fundamental step in the implementation of MOFs in miniaturized solid-state devices. Conventional MOF patterning methods suffer from low resolution and poorly defined patt...

Because of their molecular sieving properties, metal-organic frameworks have a high potential for application in gas storage, separation, and sensing. However, their real-world implementation will require robust and low-cost synthetic approaches. We herein report the solvent-free synthesis of ultramicroporous α-magnesium formate (α-MgFm) based on t...

Chemical vapor deposition of MOFs (MOF-CVD) has been used to coat solid-phase microextraction (SPME) fibers with ZIF-8, by exposing ZnO layers to the linker vapor (2-methylimidazole). This ZIF-8 coating has been used as a seed layer in a following solvothermal MOF growth step in order to increase the ZIF-8 thickness. The combined MOF-CVD and solvot...

The cleanroom-compatible process for the chemical vapor deposition of large-area metal-organic frameworks and their characterization using tools common in the microfabrication setting.

A simple solvent- and catalyst-free method is presented for the synthesis of the large-pore metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, crystalline films of a large-pore material could b...

MAF‐252, a non‐porous crystalline coordination polymer, is obtained from the solvent‐free reaction of ZnO with 3‐(2‐pyridyl)‐5‐(4‐pyridyl)‐1,2,4‐triazole. MAF‐252 can be synthesized in powder form and deposited as thin films, starting from ZnO powder and layers, respectively. Chemical vapor deposition (CVD) of MAF‐252 enables conformal and patterne...

Robust and scalable thin film deposition methods are key to realize the potential of metal-organic frameworks (MOFs) in electronic devices. Here, we report the first integration of the chemical vapor deposition (CVD) of MOF coatings in a custom reactor within a cleanroom setting. As a test case, the MOF-CVD conditions for ZIF-8 are optimized to ena...

MAF-252, a non-porous crystalline coordination polymer, is obtained from the solvent-free reaction of ZnO with 3-(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole. MAF-252 can be synthesized in powder form and deposited as thin films, starting from ZnO powder and layers, respectively. Chemical vapour deposition (CVD) of MAF-252 enables conformal and pattern...

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited fo...

The performance of modern chips is strongly related to the multi-layer interconnect structure that interfaces the semiconductor layer with the outside world. The resulting demand to continuously reduce the k-value of the dielectric in these interconnects creates multiple integration challenges and encourages the search for novel materials. Here we...

Copper dicarboxylate metal-organic framework films are deposited via chemical vapour deposition. Uniform films of CuBDC and CuCDC with an out-of-plane orientation and accessible porosity are obtained from the reaction of...

p>Robust and scalable thin film deposition methods are key to realize the potential of metal-organic frameworks (MOFs) in electronic devices. Here, we report the first integration of the chemical vapor deposition (CVD) of MOF coatings in a custom reactor within a cleanroom setting. As a test case, the MOF-CVD conditions for ZIF-8 are optimized to e...

Copper dicarboxylate metal-organic framework films are deposited via chemical vapour deposition. Uniform films of CuBDC and CuCDC with an out-of-plane orientation and accessible porosity are obtained from the reaction of Cu and CuO with vaporised dicarboxylic acid linkers.