Marcel Gort


Last Name

Gort

First Name

Marcel

ORCID

0000-0001-9998-1619

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2023 - 20243
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Publications 1 - 3 of 3
  • Exploring Silicone Additive Manufacturing in the Context of Artificial Lungs
    Item type: Doctoral Thesis
    Gort, Marcel (2024)
  • MiBOT: A head-worn robot that modulates cardiovascular responses through human-like soft massage
    Item type: Conference Paper
    Mylaeus, Alice; Vogt, Stephanie; Demirel, Berken Utku; et al. (2024)
    2024 IEEE International Conference on Robotics and Automation (ICRA)
    Massage therapy is helpful for the rehabilitation of various diseases, such as headaches caused by migraines and stress. Existing robotic systems have focused on massage therapy on the torso and limbs, but performing massage motions through suitable actuation on a person’s head has been a challenge. In this paper, we present MiBOT, a head-worn massage robot that actuates two soft tactors to produce touch motions mimicking human massage. A key design principle behind MiBOT is its silent actuation, which we achieve through pneumatic artificial muscles in conjunction with a controller loop to respond to contact pressure. We evaluated the effectiveness of MiBOT in a controlled study and assessed subjects’ blood pressure and heart rate levels while applying MiBOT. We found that our mechanical system generated positive and conclusive quantitative outcomes that are similar to the human-administered massage, decreasing participants’ mean systolic and diastolic blood pressure by 2.8 mmHg and 1.7 mmHg, respectively, as well as calming their heart rate by 8–10% on average.
  • O₂ permeability of additively manufactured silicone membranes
    Item type: Journal Article
    Gort, Marcel; Morlec, Elodie; Gwerder, Damian; et al. (2023)
    Journal of Applied Polymer Science
    Silicone is already widely used in biomedical applications thanks to its outstanding properties. Now additive manufacturing (AM) of silicone can achieve submillimeter details and is offered by SpectroPlast AG as a service. AM of silicone is particularly interesting for designs with complex internal structures such as bioreactors or oxygenators where oxygen permeability is important. Therefore, the oxygen permeability of additively manufactured silicone membranes made from TrueSil (SpectroPlast AG) is studied. Measurements are performed with two membrane thicknesses (0.5 and 0.8 mm) and four different Shore hardnesses (20A, 35A, 50A, and 60A) at 15, 20, and 25°C. The oxygen increase due to diffusion through the membrane is recorded In a cup sealed by the membrane. The oxygen permeability decreases with increasing Shore hardness. TrueSil 20A is comparable to ELASTOSIL® Film (Wacker Chemie AG) in terms of oxygen permeability. However, there is a percentage difference of approximately 27% between the measured permeability of ELASTOSIL® and the data from the supplier. Membrane thickness does not affect permeability, but the Shore hardness affects the thickness. Membranes with Shore hardness 20A or 35A are manufactured over 0.1 mm thicker than designed, while for Shore hardness 50A and 60A the deviation from the design is less than 0.04 mm.
Publications 1 - 3 of 3