Mesoscale Chemical Systems

Research on electricity-driven activation mechanisms, using electricity from renewable energy sources, is a core activity of the Mesocale Chemical Systems group (MCS) headed by Han Gardeniers. Combined with downscaling and integration of unit chemical operations, enhanced yield and selectivity of chemical reactions and product purification, and improved analysis of mass-limited chemical and biological samples is achieved.

Introduction to group activities

The research focuses on the themes Alternative activation mechanisms for chemical process control and process intensification and Miniaturization of chemical analysis systems. A special interest is in periodic mesoscale structures, where the periodicity leads to improvements in chemical process throughput and selectivity, because such structures align the size scale of elemental reaction and mass/heat/electron transport processes with their respective time scales, and reduces the residence time distribution in a chemical processing unit. Effort is planned in the development of advanced additive manufacturing methods for functional mesoscale metamaterials for chemical process engeneering and sustainable energy (with a focus on solar energy). 3D nanostructuring using more conventional nanotechnology are developed further for biochemical and sustainable energy research. Because of the small distances over which chemical processes occur in mesoscale structures, it becomes possible to apply new concepts for activation of chemical reactions, for example, using ultrasound or electrical fields. In this way, processes can be intensified and more sustainable routes for chemical processing can be achieved. An example is solar-to-fuel conversion, in which solar light, via electrons and surface electrochemistry, is used to generate hydrogen gas, or in future, convert carbon dioxide to alcohols or other liquid fuels. Activities in this area are growing, e.g. via the introduction of novel light-harvesting nanostructures. In physics and chemistry the mesoscopic scale is the length scale at which one can reasonably discuss material properties or phenomena without having to discuss individual atom behaviour. Applied research at this scale is covered by the fields of nanotechnology and microtechnology (including microsystem technology, MST, micro electromechanical systems, MEMS, and microreaction technology).

The group is a very active user of the NanoLab clean room facilities and collaborates with many of the groups participating in the nanotechnology research institute MESA+, in particular with microfluidics colleagues in the group Soft Matter, Fluidics and Interfaces (SFI) lead by Rob Lammertink, photocatalysis colleagues in the group Photo-catalytic Fuel Synthesis (PCS) headed by GuidoMul, and nanofabrication colleagues in the group Molecular Nanofabrication headed by Jurriaan Huskens.

Main research themes

Latest news

MCS paper published in The Journal of Physical Chemistry C

"CO Adsorption on Pt Nanoparticles in Low E-Fields Studied by ATR-IR Spectroscopy in a Microreactor" ... read more

MCS and MnF in Advanced Materials

In collaboration with the Molecular NanoFabrication group of Jurriaan Huskens, members of MCS published a paper in Advanced Materials. ... read more

MCS paper published in Applied Physics Letters

A paper by Joël Geerlings and others from MCS and the Twente University was published in Applied Physics Letters as an open access article. Using a modified AFM tip that contained a fluid channel the authors were able to make controlled deposits by contactless electrospraying, down to 70 nm. The paper attracted the attention of, and de Telegraaf. ... read more

BuBclean in has covered the contribution of BuBclean to the activities of MESA+ Institute for Nanotechnologies regarding the cleaning with ultrasound and bubbles. ... read more