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Hire Ignaas J.
Netherlands
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Maximize the impact of your scientific work with our writing, editing, and design expertise: from covers to PhD theses.

Profile Summary
Subject Matter Expertise
Services
Writing Technical Writing, General Proofreading & Editing
Research Feasibility Study, Scientific and Technical Research, Systematic Literature Review
Consulting Scientific and Technical Consulting
Product Development Manufacturing, Device Fabrication
Work Experience

University of Twente

- Present

Vrije Universiteit Brussel

- Present

PhD student

Universiteit Twente MESA+

- Present

Education

Vrije Universiteit Brussel

- Present

Doctor (MCS)

University of Twente

February 2017 - March 2021

Doctor of Engineering Sciences (CHIS)

Vrije Universiteit Brussel

February 2017 - March 2021

Certifications
  • Certification details not provided.
Publications
JOURNAL ARTICLE
Ward Van Geite, Ignaas S.M. Jimidar, Han Gardeniers, Gert Desmet (2023). Impact-induced generation of single airborne microspheres and the subsequent vacuum-driven assembly of ordered arrays . Powder Technology.
Triboelectric Charging of Particles, an Ongoing Matter: From the Early Onset of Planet Formation to Assembling Crystals <head> <META HTTP-EQUIV="Refresh" CONTENT="0;URL=/servlet/useragent"> </head> . ACS Omega.
Sandrien Verloy, Bert Vankeerberghen, Ignaas S. M. Jimidar, Han Gardeniers, Gert Desmet (2022). Wafer-Scale Particle Assembly in Connected and Isolated Micromachined Pockets via PDMS Rubbing . Langmuir.
Ward Van Geite and Ignaas S.M. Jimidar and Kai Sotthewes and Han Gardeniers and Gert Desmet(2022). Vacuum-driven assembly of electrostatically levitated microspheres on perforated surfaces . Materials & Design. 216. p. 110573. Elsevier {BV}
Ignaas S. M. Jimidar, Kai Sotthewes, Han Gardeniers, Gert Desmet, Devaraj van der Meer(2022). Self-organization of agitated microspheres on various substrates . Soft Matter. Royal Society of Chemistry ({RSC})
Rapid vacuum-driven monolayer assembly of microparticles on the surface of perforated microfluidic devices @article{263b7ac5b4034333b3596d214e7161dd, title = "Rapid vacuum-driven monolayer assembly of microparticles on the surface of perforated microfluidic devices", abstract = "On the cusp of a miniaturized device era, a number of promising methods have been developed to attain large-scale assemblies of micro- and nanoparticles. In this study, a novel method is proposed to firmly capture dispersed microparticles of nominal sizes of 10 μm on a two-dimensional array (1.0 × 1.0 mm2) of through-pores on a surface. This is obtained by dispensing a droplet of the particle dispersion on the pores, which drains by applying a vacuum-driven force at the backside of the pores. The assembled particles are captured on the surface in a reversible way, making them available for direct manipulation and inspection, or subsequent transfer of the particles to a second surface. The relevant process parameters dispersant concentration, dispersant type, particle properties, and pitch distance d, are optimized to obtain (near-)perfect ordered particle arrays. Furthermore, to significantly improve the quality of the particle assembly, washing steps are added to remove excess particles from the surface. Silica or polystyrene (PS) particle assemblies with an error ratio (ER) as low as 0.2% are obtained, demonstrating the universality of the proposed method. For the smallest pitch, d = 1.25 μm, even with optimal process parameters, higher ER-values (=1.1%) are obtained.", keywords = "Directed assembly, Microparticles, Open microfluidics, Ordered arrays, UT-Hybrid-D", author = "Nathaniel Berneman and Ignaas Jimidar and {Van Geite}, Ward and Han Gardeniers and Gert Desmet", note = "Funding Information: The authors gratefully acknowledge funding from the ERC Advanced Grant “Printpack” (No. 695067 ). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.", year = "2021", month = sep, doi = "10.1016/j.powtec.2021.05.079", language = "English", volume = "390", pages = "330--338", journal = "Powder technology", issn = "0032-5910", publisher = "Elsevier", } . Powder technology.
Rapid vacuum-driven monolayer assembly of microparticles on the surface of perforated microfluidic devices @article{695bbf2d9bf94282a1faf95f682bf99c, title = "Rapid vacuum-driven monolayer assembly of microparticles on the surface of perforated microfluidic devices", abstract = "On the cusp of a miniaturized device era, a number of promising methods have been developed to attain large-scale assemblies of micro- and nanoparticles. In this study, a novel method is proposed to firmly capture dispersed microparticles of nominal sizes of 10 μm on a two-dimensional array (1.0 × 1.0 mm2) of through-pores on a surface. This is obtained by dispensing a droplet of the particle dispersion on the pores, which drains by applying a vacuum-driven force at the backside of the pores. The assembled particles are captured on the surface in a reversible way, making them available for direct manipulation and inspection, or subsequent transfer of the particles to a second surface. The relevant process parameters dispersant concentration, dispersant type, particle properties, and pitch distance d, are optimized to obtain (near-)perfect ordered particle arrays. Furthermore, to significantly improve the quality of the particle assembly, washing steps are added to remove excess particles from the surface. Silica or polystyrene (PS) particle assemblies with an error ratio (ER) as low as 0.2% are obtained, demonstrating the universality of the proposed method. For the smallest pitch, d = 1.25 μm, even with optimal process parameters, higher ER-values (=1.1%) are obtained.", keywords = "Directed assembly, Microparticles, Open microfluidics, Ordered arrays", author = "Nathaniel Berneman and Ignaas Jimidar and {Van Geite}, Ward and Han Gardeniers and Gert Desmet", note = "Funding Information: The authors gratefully acknowledge funding from the ERC Advanced Grant “Printpack” (No. 695067 ). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V. Copyright: Copyright 2022 Elsevier B.V., All rights reserved.", year = "2021", month = sep, doi = "10.1016/j.powtec.2021.05.079", language = "English", volume = "390", pages = "330--338", journal = "Powder Technology", issn = "0032-5910", publisher = "Elsevier", } . Powder Technology.
A detailed study of the interaction between levitated microspheres and the target electrode in a strong electric field @article{0a9651c317b14319bbb300498ba7952a, title = "A detailed study of the interaction between levitated microspheres and the target electrode in a strong electric field", abstract = "In this work, we report on an in-depth study of how 10 μm silica and polystyrene particles interact with a target electrode after they were levitated by applying a strong electric field. The results show that, under these conditions, silica particles unexpectedly have a higher tendency to adhere on a fluorocarbon coated electrode compared to a bare, non-coated silicon electrode. Relative adherence ratios Γ up to Γ = 4.7 were observed. Using the colloidal probe technique, atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM), the observations can be explained by a mechanism where particles dissipate their energy through adhesive forces combined with permanent surface deformations during impact and charge transfer through the contact electrification phenomenon. All these processes attribute to increasing the probability that levitated particles attain velocities that are lower than the sticking velocity.", keywords = "Adhesion, Contact electrification, Levitation, Particle cloud, Particle impact, Strong electric field", author = "Jimidar, {Ignaas S.M.} and Kai Sotthewes and Han Gardeniers and Gert Desmet", year = "2021", month = may, doi = "10.1016/j.powtec.2021.01.036", language = "English", volume = "383", pages = "292--301", journal = "Powder technology", issn = "0032-5910", publisher = "Elsevier", } . Powder technology.
A detailed study of the interaction between levitated microspheres and the target electrode in a strong electric field @article{5c2e1c4714de40f6b98e3a1cadd95749, title = "A detailed study of the interaction between levitated microspheres and the target electrode in a strong electric field", abstract = "In this work, we report on an in-depth study of how 10 μm silica and polystyrene particles interact with a target electrode after they were levitated by applying a strong electric field. The results show that, under these conditions, silica particles unexpectedly have a higher tendency to adhere on a fluorocarbon coated electrode compared to a bare, non-coated silicon electrode. Relative adherence ratios Γ up to Γ = 4.7 were observed. Using the colloidal probe technique, atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM), the observations can be explained by a mechanism where particles dissipate their energy through adhesive forces combined with permanent surface deformations during impact and charge transfer through the contact electrification phenomenon. All these processes attribute to increasing the probability that levitated particles attain velocities that are lower than the sticking velocity.", keywords = "Adhesion, Contact electrification, Levitation, Particle cloud, Particle impact, Strong electric field", author = "Jimidar, {Ignaas S.M.} and Kai Sotthewes and Han Gardeniers and Gert Desmet", note = "Funding Information: The authors gratefully acknowledge funding from the ERC Advanced Grant “Printpack” (No. 695067 ). The authors thank A. Meghoe and J. Wood for fruitful discussions. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V. Copyright: Copyright 2022 Elsevier B.V., All rights reserved.", year = "2021", month = may, doi = "10.1016/j.powtec.2021.01.036", language = "English", volume = "383", pages = "292--301", journal = "Powder Technology", issn = "0032-5910", publisher = "Elsevier", } . Powder Technology.
Berneman, N., Jimidar, I., Van Geite, W., Gardeniers, H., Desmet, G.(2021). Rapid vacuum-driven monolayer assembly of microparticles on the surface of perforated microfluidic devices . Powder Technology. 390. p. 330-338.
Jimidar, I.S.M., Sotthewes, K., Gardeniers, H., Desmet, G.(2021). A detailed study of the interaction between levitated microspheres and the target electrode in a strong electric field . Powder Technology. 383. p. 292-301.
Ignaas S. M. Jimidar, Kai Sotthewes, Han Gardeniers, Gert Desmet(2020). Spatial Segregation of Microspheres by Rubbing-Induced Triboelectrification on Patterned Surfaces . Langmuir. 36. (24). p. 6793--6800. American Chemical Society ({ACS})
Jimidar, I.S.M., Sotthewes, K., Gardeniers, H., Desmet, G.(2020). Spatial Segregation of Microspheres by Rubbing-Induced Triboelectrification on Patterned Surfaces . Langmuir. 36. (24). p. 6793-6800.
CONFERENCE POSTER
Dry Assembly vs Wet Assembly of Microspherical Particle Arrays @conference{f7e91619dc9f4effbae8e9523373cd37, title = "Dry Assembly vs Wet Assembly of Microspherical Particle Arrays", author = "Ignaas Jimidar and {Van Geite}, Ward and Han Gardeniers and Gert Desmet", year = "2022", month = jun, day = "13", language = "Dutch", note = "11th International Colloids Conference ; Conference date: 12-06-2022 Through 15-06-2022", url = "https://www.elsevier.com/events/conferences/international-colloids-conference", } . 11th International Colloids Conference, Lisbon, Portugal, 12/06/22.
Structured Microgroove Columns as a Potential Solution to Obtain Perfectly Ordered Particle Beds @conference{ef06698ee6ee4c20bf04e28f246c0730, title = "Structured Microgroove Columns as a Potential Solution to Obtain Perfectly Ordered Particle Beds", author = "Vankeerberghen, {Bert Josse} and Sandrien Verloy and Ignaas Jimidar and Han Gardeniers and Gert Desmet", year = "2022", month = jun, language = "English", note = "50th International Symposium on High Performance Liquid Phase Separations and Related Techniques (HPLC 2022), HPLC 2022 ; Conference date: 18-06-2022 Through 23-06-2022", url = "https://hplc2022.org/", } . 50th International Symposium on High Performance Liquid Phase Separations and Related Techniques (HPLC 2022), San Diego, United States, 18/06/22.
Ignaas S. M. Jimidar , Nathaniel Berneman, Yoachim Vanderheyden, Han Gardeniers, Gert Desmet(2018). Collection of micron sized silica particles using a vacuum-driven set-up . 44th Micro and Nano Engineering, Copenhagen, Denmark, 24/09/18.
Ignaas S. M. Jimidar , Yoachim Vanderheyden, H. Gardeniers, Gert Desmet(2017). Interaction of Microparticles in a Miniaturized Vacuum-Cleaner . COMSOL Conference, Rotterdam, Netherlands, 18/10/17.
OTHER
Corrigendum to A detailed study of the interaction between levitated microspheres and the target electrode in a strong electric field [Powder Technology 383 (2021), 292–301] (Powder Technology (2021) 383 (292–301), (S0032591021000528), (10.1016/j.powtec.2021.01.036)) @article{b219e0d4f9f248bd8bac8647c9402906, title = "Corrigendum to A detailed study of the interaction between levitated microspheres and the target electrode in a strong electric field [Powder Technology 383 (2021), 292–301] (Powder Technology (2021) 383 (292–301), (S0032591021000528), (10.1016/j.powtec.2021.01.036))", abstract = "The authors regret to inform that they would like to change the corresponding author in the Elsevier system from Gert Desmet to Ignaas Jimidar. All authors have given their consent to make this change. See earlier correspondence and collected signatures from the authors. The authors would like to apologise for any inconvenience caused.", author = "Jimidar, {Ignaas S.M.} and Kai Sotthewes and Han Gardeniers and Gert Desmet", year = "2022", month = feb, doi = "10.1016/j.powtec.2022.117204", language = "English", volume = "399", journal = "Powder Technology", issn = "0032-5910", publisher = "Elsevier", } . Powder Technology.
Corrigendum to “Rapid vacuum-driven monolayer assembly of microparticles on the surface of perforated microfluidic devices” [Powder Technology 390 (2021), 330–338] (Powder Technology (2021) 390 (330–338), (S0032591021004885), (10.1016/j.powtec.2021.05.079)) @article{10fd823271c44571b27525658e8f9889, title = "Corrigendum to “Rapid vacuum-driven monolayer assembly of microparticles on the surface of perforated microfluidic devices” [Powder Technology 390 (2021), 330–338] (Powder Technology (2021) 390 (330–338), (S0032591021004885), (10.1016/j.powtec.2021.05.079))", abstract = "The authors regret to inform that they would like to change the corresponding author in the Elsevier system from Gert Desmet to Ignaas S. M. Jimidar. All authors have given their consent to make this change. See earlier correspondence and collected signatures from the authors. The authors would like to apologise for any inconvenience caused.", author = "Nathaniel Berneman and Jimidar, {Ignaas S.M.} and {Van Geite}, Ward and Han Gardeniers and Gert Desmet", year = "2022", month = feb, doi = "10.1016/j.powtec.2022.117203", language = "English", volume = "399", journal = "Powder Technology", issn = "0032-5910", publisher = "Elsevier", } . Powder Technology.
{Ignaas Jimidar}(2016). Dissolution modes of droplets on patterned surfaces . Unpublished
CONFERENCE ABSTRACT
(2021). Spatial Segregation of Spherical Microparticles by Rubbing-Induced Triboelectrification on Fluorocarbon-Patterned Surfaces. 95th ACS Colloid and Surface Science Symposium.
DISSERTATION THESIS
Microsphere handling at the microscale @phdthesis{2ba2f7c3a38245f59696f4c893d3112b, title = "Microsphere handling at the microscale: New tools and new effects", abstract = "Analytical techniques are essential in detecting components within complex samples retrieved from various applications, e.g., rapidly detecting pathogens to prevent an outbreak. High Performance Liquid Chromatography (HPLC), is an analytical technique, in which a sample is pumped through a packed bed of microspheres (the column). Within this column, the components of the injected sample interact differently with the beads, hence leaving the column at different intervals.Improving the efficiency of HPLC systems might benefit the clinical diagnostics of diseases, e.g., cancer. One approach to achieve this is by changing the packing of microspheres in the column from a random to an ordered state. We propose to accomplish this goal by a layer-by-layer assembly of these beads. This strategy is pursued by exploring the concept of a vacuum-driven force capturing a monolayer of precisely positioned beads on a micromachined device. As simple as it sounds, it suffices to say that it has been a challenge to assemble the particle monolayer. The main difficulties originated from the aggregation of these beads and their uncontrollable supply under dry conditions.We have applied various techniques, such as rubbing, high voltage power supply systems, and shakers, to break the large cluster of microspheres, prior to offering them to the experimental setup. Furthermore, we have studied the interaction forces of silica or polystyrene beads on several surfaces to understand the mechanism of why they would stick on surfaces. It was observed that after rubbing, the microspheres unexpectedly had a preference to stick on a Teflon-like material. This result was explained by the tribocharging mechanism, which is the same mechanism responsible for the charging of a balloon while rubbing it on your hair. A key part of the project involved the design and fabrication of devices using micromachining technology. These devices were deployed in several domains of the project: to break the clusters, to control the supply of single particles with a filter, and to capture the particles with the vacuum force. Our studies revealed that droplets carrying the beads enhance the supplement as well as the quality of the obtained particle assembly. Moreover, funnel-like structures on which the microspheres are captured on the device, have proven to enhance the quality of the closely packed assemblies significantly.", keywords = "Microparticles, adhesion, Tribochemistry, Contact electrification, microfabrication, Fluidized, Colloid probe, Monolayers", author = "Jimidar, {Ignaas Shiraaz Mohamedoemar}", year = "2021", month = mar, day = "19", doi = "10.3990/1.9789036551472", language = "English", isbn = "978-90-365-5147-2", publisher = "University of Twente", address = "Netherlands", school = "University of Twente", } .
CONFERENCE PAPER
RAPID VACUUM-DRIVEN ASSEMBLY OF DISPERSED MICROSPHERES ON THE SURFACE OF (NON-) PROFILED PERFORATED DEVICES @inproceedings{1cd5c6f5bbf34c2389dd5a5c9a887ad0, title = "RAPID VACUUM-DRIVEN ASSEMBLY OF DISPERSED MICROSPHERES ON THE SURFACE OF (NON-) PROFILED PERFORATED DEVICES", abstract = "Here, we propose a universal technique to firmly capture dispersed microparticles on any desired two-dimensional array of through-pores on a surface. The 10 μm silica or polystyrene particles are reversibly captured, making them accessible for direct manipulation and inspection or subsequent transfer to other surfaces. To obtain perfect arrays with a pitch of 1.25 μm, perforated devices with profiled surfaces were required. Additionally, the method has proven successful for both types of particles, either dispersed in water or ethanol. The assembly technique may serve as a platform for manufacturing hierarchical materials, e.g., ordered chromatography packings, or performing cellular assays.", keywords = "Additive Manufacturing, Directed Assembly, Microparticles, Open Microfluidics", author = "Jimidar, {Ignaas S.M.} and Nathaniel Berneman and {Van Geite}, Ward and Han Gardeniers and Gert Desmet", year = "2021", month = jan, day = "1", language = "English", series = "MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences", publisher = "Chemical and Biological Microsystems Society", pages = "133--134", booktitle = "MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences", note = "25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021 ; Conference date: 10-10-2021 Through 14-10-2021", } . MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences.
Rapid Vacuum-driven assembly of dispersed microspheres on the surface of (non-) profiled perforated devices @inproceedings{19cb58302b464864a0ebb05dad880ecb, title = "Rapid Vacuum-driven assembly of dispersed microspheres on the surface of (non-) profiled perforated devices", abstract = "Here, we propose a universal technique to firmly capture dispersed microparticles on any desired two-dimensional array of through-pores on a surface. The 10 μm silica or polystyrene particles are reversibly captured, making them accessible for direct manipulation and inspection or subsequent transfer to other surfaces. To obtain perfect arrays with a pitch of 1.25 μm, perforated devices with profiled surfaces were required. Additionally, the method has proven successful for both types of particles, either dispersed in water or ethanol. The assembly technique may serve as a platform for manufacturing hierarchical materials, e.g., ordered chromatography packings, or performing cellular assays.", keywords = "Additive Manufacturing, Directed Assembly, Microparticles, Open Microfluidics", author = "Jimidar, {Ignaas S.M.} and Nathaniel Berneman and {Van Geite}, Ward and Han Gardeniers and Gert Desmet", note = "Funding Information: The authors gratefully acknowledge funding from the ERC Advanced Grant “Printpack” (No. 695067). Publisher Copyright: {\textcopyright} 2021 MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.; 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2021, MicroTAS 2021 ; Conference date: 10-10-2021 Through 14-10-2021", year = "2021", language = "English", pages = "133--134", booktitle = "MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences", publisher = "The Chemical and Biological Microsystems Society", url = "https://microtas2021.org/", } . MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences.