PMID- 35602241
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220716
IS  - 2468-0672 (Electronic)
IS  - 2468-0672 (Linking)
VI  - 11
DP  - 2022 Apr
TI  - Maasi: A 3D printed spin coater with touchscreen.
PG  - e00316
LID - 10.1016/j.ohx.2022.e00316 [doi]
LID - e00316
AB  - Spin coaters are widely used to apply thin films of a material uniformly over a 
      flat substrate. Despite the simplicity of this technique the entry price for such 
      machines might be prohibitive, ranging from few hundreds to thousands of Euros. 
      Here we present Maasi, an affordable alternative that is easy to build and has 
      all functional key features to be used in a wide range of applications. Our 
      design has a price of less than hundred Euros and an assembly time of only two 
      hours. One of the key design principles was to use only 3D printed parts in 
      combination with affordable Commercial Off-The-Shelf (COTS) components [1]. 
      Reducing the complexity we use an electronic speed controller (ESC) with 
      telemetry, to eliminate the need for a rotor position sensor [2]. A touchscreen 
      further improves its usability, thus setting a perfect startpoint for the design 
      of other affordable lab tools. The Maasi project includes different 3D printable 
      substrate holders allowing treatment of formats up to 80 mm in diameter. We 
      furthermore validate the Maasi spin coater by measuring its speed accuracy and 
      performance for coating polydimethylsiloxane (PDMS) on glass coverslips for 
      mechanobiological assays.
CI  - (c) 2022 Published by Elsevier Ltd.
FAU - Carbonell Rubio, Dani
AU  - Carbonell Rubio D
AD  - Institute for Biology, Experimental Biophysics/Mechanobiology, Humboldt 
      University of Berlin, Berlin, Germany.
FAU - Weber, Willi
AU  - Weber W
AD  - Institute for Biology, Experimental Biophysics/Mechanobiology, Humboldt 
      University of Berlin, Berlin, Germany.
FAU - Klotzsch, Enrico
AU  - Klotzsch E
AD  - Institute for Biology, Experimental Biophysics/Mechanobiology, Humboldt 
      University of Berlin, Berlin, Germany.
LA  - eng
PT  - Journal Article
DEP - 20220508
PL  - England
TA  - HardwareX
JT  - HardwareX
JID - 101710262
PMC - PMC9118532
OTO - NOTNLM
OT  - 3D printing
OT  - BLHeli32
OT  - Coating
OT  - ESP32
OT  - Nextion
OT  - Open source hardware
OT  - Spin coater
OT  - Touchscreen
COIS- The authors declare that they have no known competing financial interests or 
      personal relationships that could have appeared to influence the work reported in 
      this paper.
EDAT- 2022/05/24 06:00
MHDA- 2022/05/24 06:01
PMCR- 2022/05/08
CRDT- 2022/05/23 04:23
PHST- 2022/02/02 00:00 [received]
PHST- 2022/05/04 00:00 [revised]
PHST- 2022/05/04 00:00 [accepted]
PHST- 2022/05/23 04:23 [entrez]
PHST- 2022/05/24 06:00 [pubmed]
PHST- 2022/05/24 06:01 [medline]
PHST- 2022/05/08 00:00 [pmc-release]
AID - S2468-0672(22)00061-X [pii]
AID - e00316 [pii]
AID - 10.1016/j.ohx.2022.e00316 [doi]
PST - epublish
SO  - HardwareX. 2022 May 8;11:e00316. doi: 10.1016/j.ohx.2022.e00316. eCollection 2022 
      Apr.