Henk-Willem Veltkamp

Henk-Willem Veltkamp
University of Twente | UT · Department of Integrated Devices and Systems (IDS)

MSc

About

15
Publications
3,001
Reads
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20
Citations
Introduction
I am a chemist by background (Bachelor's degree) and specialized in nanotechnology (Master's degree). The focus of my Master's degree was on lab-on-a-chip, micro- and nanofluidics, micro- and nanofabrication, nanomedicine and bionanotechnology. Currently I am doing a PhD program in the newly formed Micro Systems and Sensors research group at the University of Twente.
Additional affiliations
March 2016 - present
University of Twente
Position
  • PhD Student
Description
  • Working on the technological challenges in the development of the micro Wobbe index meter chip.
September 2015 - present
University of Twente
Position
  • Education coordinator e-learning and blended learning
Description
  • Coordinating the development of different E-learning courses in the field of nanotechnology.
July 2014 - June 2015
Vrije Universiteit Brussel
Position
  • Researcher
Description
  • Working on hot embossed polymer-based high-aspect ratio micropillar arrays for chromatographic applications.
Education
September 2012 - July 2014
University of Twente
Field of study
  • Nanotechnology
September 2011 - July 2012
University of Twente
Field of study
  • Applied Physics
September 2007 - July 2011

Publications

Publications (15)
Conference Paper
For fast and accurate force measurements, e.g., sampling the impact of a liquid droplet, a highly sensitive high-bandwidth force sensor is required. High-sensitivity and high-bandwidth are contradictive specifications in recently published force sensors. The miniature force sensor proposed in this paper uses a novel combination of in-plane sensing,...
Article
Full-text available
Surface Channel Technology is known as the fabrication platform to make free-hanging microchannels for various microfluidic sensors and actuators. In this technology, thin film metal electrodes, such as platinum or gold, are often used for electrical sensing and actuation purposes. As a result that they are located at the top surface of the microfl...
Article
Full-text available
This paper describes an innovative yet straightforward fabrication technique to create three-dimensional (3D) microstructures with controllable tapered geometries by combining conventional photolithography and thermal reflow of photoresist. Positive photoresist-based microchannel structures with varying width-to-length ratios were reflowed after th...
Article
Full-text available
A microfluidic protein aggregation device (microPAD) that allows the user to perform a series of protein incubations with various concentrations of two reagents is demonstrated. The microfluidic device consists of 64 incubation chambers to perform individual incubations of the protein at 64 specific conditions. Parallel processes of metering reagen...
Article
Full-text available
Fast point-of-use detection of, for example, early-stage zoonoses, e.g., Q-fever, bovine tuberculosis, or the Covid-19 coronavirus, is beneficial for both humans and animal husbandry as it can save lives and livestock. The latter prevents farmers from going bankrupt after a zoonoses outbreak. This paper describes the development of a fabrication pr...
Conference Paper
Full-text available
Fast point-of-use detection of early-stage zoonoses is beneficial for animal husbandry as it can save livestock and prevent farmers from going bankrupt after an outbreak. This paper describes the first steps towards a fully integrated and disposable DNA amplification chip. Based on the analysis of the milling process, metal adhesion study, COMSOL M...
Article
The pressure stability of microfluidic glass chips was tested experimentally, with a special focus on the inserts for glued capillary connections. Destructive high-pressure experiments with demineralized water conducted at room temperature showed a difference in mean fracture pressure between the two tested glass types BF33 and D263T, with values o...
Article
Full-text available
Arrays of nanoscale pyramidal cages embedded in a silicon nitride membrane are fabricated with an order of magnitude miniaturization in the size of the cages compared to previous work. This becomes possible by combining the previously published wafer‐scale corner lithography process with displacement Talbot lithography, including an additional resi...
Conference Paper
Full-text available
In this paper, sub-micrometer and relatively open pyramidal cages composed of silicon nitride nanowires were fabricated by corner lithography. The cages are placed in an array on a perforated membrane. To check the particle trapping ability of the cages, aqueous gold nanoparticle suspensions with mean diameter of 150nm were filtered by the device....
Poster
Full-text available
The concept of high pressure liquid chromatography is already over a century old and invented by the Russian botanist Tswett. This technique is in a century optimized to a widely used analytical analysis technique. However, it is only capable of analysing relatively large sample volumes. The desire of analysing smaller and smaller volumes of liquid...
Poster
Full-text available
In the Netherlands, DNA analysis of samples found on the crime scene are send to the Dutch Forensic Institute (NFI). Over here they have to go through the different process steps before the DNA profile is obtained. Only during this process, it becomes clear if a sample contains DNA or not. The percentage of “empty” samples is around 30% and 15% for...
Thesis
Full-text available
This Master's thesis describes the research that is done for the development of a plug-based microfluidic DNA extraction chip. The investigated method relies on a micro solid phase extraction method that is based on the electrostatic interaction between protonated amino groups and the negatively charged DNA.
Poster
Full-text available
In this research, a nano-scale trapping device is designed and developed. This trapping device is capable of trapping individual particles in compartments with an open environment. Such a device is recently developed by Berenschot et al. of the TST research group of MESA+ (Enschede, NL). This device consists of micro-scale (16 μm base) pyramids and...

Projects

Project (1)
Project
Developing an integrated Wobbe Index meter