Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Joost C. Lotters"'
Publikováno v:
Micromachines, Vol 15, Iss 10, p 1230 (2024)
In this paper, a novel fabrication process for the realization of large, suspended microfluidic channels is presented. The method is based on Buried Channel Technology and uses a mixture of HF, HNO3, and water etchant, which has high selectivity betw
Externí odkaz:
https://doaj.org/article/8bb5b99283de49d3a0f4f396a9e5bb74
Publikováno v:
Micromachines, Vol 15, Iss 6, p 671 (2024)
Among the different techniques for monitoring the flow rate of various fluids, thermal flow sensors stand out for their straightforward measurement technique. However, the main drawback of these types of sensors is their dependency on the thermal pro
Externí odkaz:
https://doaj.org/article/275c696ba1d447e599ab2e14f2ecd6de
Publikováno v:
Micromachines, Vol 15, Iss 1, p 114 (2024)
This paper presents the first nickel-plated micro-Coriolis mass-flow sensor with integrated optical readout. The sensor consists of a freely suspended tube made of electroplated nickel with a total length of 60 mm, an inner diameter of 580 µm, and a
Externí odkaz:
https://doaj.org/article/1e713e94207e4cb5b86f7fbacc525968
Autor:
Shirin Azadi Kenari, Remco J. Wiegerink, Henk-Willem Veltkamp, Remco G. P. Sanders, Joost C. Lötters
Publikováno v:
Micromachines, Vol 14, Iss 7, p 1280 (2023)
This paper presents a novel gas-independent thermal flow sensor chip featuring three calorimetric flow sensors for measuring flow profile and direction within a tube, along with a single-wire flow independent thermal conductivity sensor capable of id
Externí odkaz:
https://doaj.org/article/790ff6ee84f8458b9825e76051f26832
Publikováno v:
Sensors, Vol 23, Iss 8, p 4062 (2023)
This paper presents the modeling, fabrication, and testing of a 3D-printed Coriolis mass flow sensor. The sensor contains a free-standing tube with a circular cross-section printed using the LCD 3D-printing technique. The tube has a total length of 4
Externí odkaz:
https://doaj.org/article/a977be368c214b49875fa6c158990899
Autor:
Henk-Willem Veltkamp, Yves L. Janssens, Meint J. de Boer, Yiyuan Zhao, Remco J. Wiegerink, Niels R. Tas, Joost C. Lötters
Publikováno v:
Micromachines, Vol 13, Iss 11, p 1908 (2022)
In micro-machined micro-electromechanical systems (MEMS), refilled high-aspect-ratio trench structures are used for different applications. However, these trenches often show keyholes, which have an impact on the performance of the devices. In this p
Externí odkaz:
https://doaj.org/article/0696249c50ab453eaba5c142d025a0dd
Publikováno v:
Sensors, Vol 22, Iss 2, p 673 (2022)
A micro-Coriolis mass flow sensor is a resonating device that measures small mass flows of fluid. A large vibration amplitude is desired as the Coriolis forces due to mass flow and, accordingly, the signal-to-noise ratio, are directly proportional to
Externí odkaz:
https://doaj.org/article/8f3144d21f7641678ba63456547f6ff6
Autor:
Yiyuan Zhao, Henk-Willem Veltkamp, Thomas V. P. Schut, Remco G. P. Sanders, Bogdan Breazu, Jarno Groenesteijn, Meint J. de Boer, Remco J. Wiegerink, Joost C. Lötters
Publikováno v:
Micromachines, Vol 11, Iss 6, p 561 (2020)
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
Externí odkaz:
https://doaj.org/article/d406e9c17f694cb59d3c401b2941c4e9
Publikováno v:
Micromachines, Vol 3, Iss 2, Pp 396-412 (2012)
Precise mass flow control is an essential requirement for novel, small-scale fluidic systems. However, a small-volume, low-leakage proportional control valve for minute fluid flows has not yet been designed or manufactured. A survey is therefore made
Externí odkaz:
https://doaj.org/article/90185ac03741451680660f511f57ebb3
Autor:
Remco J. Wiegerink, Jarno Groenesteijn, Jeroen Haneveld, Joost C. Lötters, Theo S.J. Lammerink
Publikováno v:
Micromachines, Vol 3, Iss 1, Pp 194-203 (2012)
We have realized a micromachined single chip flow sensing system with an ultra-wide dynamic flow range of more than five decades, from 100 nL/h up to more than 10 mL/h. The system comprises both a thermal and a micro Coriolis flow sensor with partial
Externí odkaz:
https://doaj.org/article/81bde5b0b6c247df8279f9ba5ed6268d