Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Dorothea Helmer"'
Autor:
Pang Zhu, Qingchuan Song, Sagar Bhagwat, Fadoua Mayoussi, Andreas Goralczyk, Niloofar Nekoonam, Mario Sanjaya, Peilong Hou, Silvio Tisato, Frederik Kotz-Helmer, Dorothea Helmer, Bastian E. Rapp
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract Microstructured molds are essential for fabricating various components ranging from precision optics and microstructured surfaces to microfluidics. However, conventional fabrication technology such as photolithography requires expensive equi
Externí odkaz:
https://doaj.org/article/bbabd077fc9749bda2033625c4998f7b
Autor:
Fadoua Mayoussi, Ali Usama, Niloofar Nekoonam, Ivonne Knauer, David Böcherer, Bastian E. Rapp, Dorothea Helmer
Publikováno v:
Materials, Vol 16, Iss 5, p 1938 (2023)
Understanding the wettability of soft surfaces is of key importance for the development of protective and repellent coatings and controlling droplet dynamics when required. There are many factors that affect the wetting and dynamic dewetting behavior
Externí odkaz:
https://doaj.org/article/4ee92418a4784dfe9dae38b77c75bbe6
Autor:
Qingchuan Song, Yunong Chen, Peilong Hou, Pang Zhu, Dorothea Helmer, Frederik Kotz-Helmer, Bastian E. Rapp
Publikováno v:
Micromachines, Vol 14, Iss 2, p 244 (2023)
Pneumatic actuators are of great interest for device miniaturization, microactuators, soft robots, biomedical engineering, and complex control systems. Recently, multi-material actuators have become of high interest to researchers due to their compre
Externí odkaz:
https://doaj.org/article/ca1f9639e77a49be90772ebec0739546
Autor:
Markus Mader, Leonhard Hambitzer, Phillip Schlautmann, Sophie Jenne, Christian Greiner, Florian Hirth, Dorothea Helmer, Frederik Kotz‐Helmer, Bastian E. Rapp
Publikováno v:
Advanced Science, Vol 8, Iss 23, Pp n/a-n/a (2021)
Abstract In recent years, additive manufacturing (AM) of glass has attracted great interest in academia and industry, yet it is still mostly limited to liquid nanocomposite‐based approaches for stereolithography, two‐photon polymerization, or dir
Externí odkaz:
https://doaj.org/article/092eb5c949504d40b8a96bf64b10a5ed
Autor:
Fadoua Mayoussi, Ali Usama, Kiana Karimi, Niloofar Nekoonam, Andreas Goralczyk, Pang Zhu, Dorothea Helmer, Bastian E. Rapp
Publikováno v:
Materials, Vol 15, Iss 22, p 7903 (2022)
Superrepellent surfaces, such as micro/nanostructured surfaces, are of key importance in both academia and industry for emerging applications in areas such as self-cleaning, drag reduction, and oil repellence. Engineering these surfaces is achieved t
Externí odkaz:
https://doaj.org/article/a60823589e164434bff66ec71f85e446
Autor:
Frederik Kotz, Patrick Risch, Karl Arnold, Semih Sevim, Josep Puigmartí-Luis, Alexander Quick, Michael Thiel, Andrei Hrynevich, Paul D. Dalton, Dorothea Helmer, Bastian E. Rapp
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Fused silica glass has excellent optical properties, chemical and thermal stability and hardness, but its microstructuring for miniaturized applications has proven difficult. Here the authors demonstrate obtainment of precise arbitrary three dimensio
Externí odkaz:
https://doaj.org/article/343beb84b8964d7da09413a080dc8aca
Autor:
Andreas Goralczyk, Sagar Bhagwat, Fadoua Mayoussi, Niloofar Nekoonam, Kai Sachsenheimer, Peilong Hou, Frederik Kotz-Helmer, Dorothea Helmer, Bastian E. Rapp
Publikováno v:
Nanomaterials, Vol 12, Iss 13, p 2201 (2022)
Digital microfluidics (DMF) is a versatile platform for conducting a variety of biological and chemical assays. The most commonly used set-up for the actuation of microliter droplets is electrowetting on dielectric (EWOD), where the liquid is moved b
Externí odkaz:
https://doaj.org/article/5ca4f5bfaffa4b089f9a935384499240
Autor:
Dorothea Helmer, Nico Keller, Frederik Kotz, Friederike Stolz, Christian Greiner, Tobias M. Nargang, Kai Sachsenheimer, Bastian E. Rapp
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
Abstract Superhydrophobic surfaces and surface coatings are of high interest for many applications in everyday life including non-wetting and low-friction coatings as well as functional clothing. Manufacturing of these surfaces is intricate since sup
Externí odkaz:
https://doaj.org/article/a1562963dbbf412cb7f52624b2b6f0ae
Autor:
Frederik Kotz, Markus Mader, Nils Dellen, Patrick Risch, Andrea Kick, Dorothea Helmer, Bastian E. Rapp
Publikováno v:
Micromachines, Vol 11, Iss 9, p 873 (2020)
Polymethylmethacrylate (PMMA) is one of the most important thermoplastic materials and is a widely used material in microfluidics. However, PMMA is usually structured using industrial scale replication processes, such as hot embossing or injection mo
Externí odkaz:
https://doaj.org/article/1faf2fda0dbc4e4a9cd1408371fcad3c
Publikováno v:
Micromachines, Vol 10, Iss 9, p 588 (2019)
Microcontrollers have a low energy consumption and are convenient tools for the operation and readout of small lab-on-a-chip devices. The operation of microcontrollers for data collection and analysis is key for measurements and statistics in field e
Externí odkaz:
https://doaj.org/article/a0114a3097b14dbdac6227fcb10fb810