Open-Source Automated Mapping Four-Point Probe: Difference between revisions

Revision as of 14:32, 26 January 2017

Source

Handy Chandra, Spencer W. Allen, Shane W. Oberloier, Nupur Bihari, Jephias Gwamuri and Joshua M. Pearce. Open-Source Automated Mapping Four-Point Probe. Materials 2017, 10(2), 110. doi: 10.3390/ma10020110 open access
- Four Point Probe GUI and Software. Available online: https://github.com/mtu-most/fourpointprobe
- Open Science Framework—Open Source 4 Point Probe. Available online: https://osf.io/kcbmq/
- Open source 4-point probe literature review

Abstract

Scientists have begun using self-replicating rapid prototyper (RepRap) 3-D printers to manufacture open source digital designs of scientific equipment. This approach is refined here to develop a novel instrument capable of performing automated large-area four-point probe measurements. The designs for conversion of a RepRap 3-D printer to a 2-D open source four-point probe (OS4PP) measurement device are detailed for the mechanical and electrical systems. Free and open source software and firmware are developed to operate the tool. The OS4PP was validated against a wide range of discrete resistors and indium tin oxide (ITO) samples of different thicknesses both pre- and post-annealing. The OS4PP was then compared to two commercial proprietary systems. Results of resistors from 10 to 1 MΩ show errors of less than 1% for the OS4PP. The 3-D mapping of sheet resistance of ITO samples successfully demonstrated the automated capability to measure non-uniformities in large-area samples. The results indicate that all measured values are within the same order of magnitude when compared to two proprietary measurement systems. In conclusion, the OS4PP system, which costs less than 70% of manual proprietary systems, is comparable electrically while offering automated 100 micron positional accuracy for measuring sheet resistance over larger areas.

Keywords

3-D platform; four-point probe; conductivity; indium tin oxide; ITO; open source hardware; libre hardware; sheet resistance; transparent conducting oxide; TCO

Template:Statusboxtop Template:Status-design Template:Status-model Template:Status-prototype Template:Status-verified You can help Appropedia by contributing to the next step in this OSAT's status. Template:Boxbottom

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 ==Source==
 * Handy Chandra, Spencer W. Allen, Shane W. Oberloier, Nupur Bihari, Jephias Gwamuri and Joshua M. Pearce. [http://www.mdpi.com/1996-1944/10/2/110 Open-Source Automated Mapping Four-Point Probe]. ''Materials'' 2017, 10(2), 110. doi: 10.3390/ma10020110 [https://www.academia.edu/31083196/Open-Source_Automated_Mapping_Four-Point_Probe open access]
+** Four Point Probe GUI and Software. Available online: https://github.com/mtu-most/fourpointprobe
+** Open Science Framework—Open Source 4 Point Probe. Available online: https://osf.io/kcbmq/
+** [[Open source 4-point probe literature review]]
 ==Abstract==
-Scientists have begun using self-replicating rapid prototyper (RepRap) 3-D printers to manufacture open source digital designs of scientific equipment. This approach is refined here to develop a novel instrument capable of performing automated large-area four-point probe measurements. The designs for conversion of a RepRap 3-D printer to a 2-D open source four-point probe (OS4PP) measurement device are detailed for the mechanical and electrical systems. Free and open source software and firmware are developed to operate the tool. The OS4PP was validated against a wide range of discrete resistors and indium tin oxide (ITO) samples of different thicknesses both pre- and post-annealing. The OS4PP was then compared to two commercial proprietary systems. Results of resistors from 10 to 1 MΩ show errors of less than 1% for the OS4PP. The 3-D mapping of sheet resistance of ITO samples successfully demonstrated the automated capability to measure non-uniformities in large-area samples. The results indicate that all measured values are within the same order of magnitude when compared to two proprietary measurement systems. In conclusion, the OS4PP system, which costs less than 70% of manual proprietary systems, is comparable electrically while offering automated 100 micron positional accuracy for measuring sheet resistance over larger areas.
+[[image:Os4pp.png|400px|right]] Scientists have begun using self-replicating rapid prototyper (RepRap) 3-D printers to manufacture open source digital designs of scientific equipment. This approach is refined here to develop a novel instrument capable of performing automated large-area four-point probe measurements. The designs for conversion of a RepRap 3-D printer to a 2-D open source four-point probe (OS4PP) measurement device are detailed for the mechanical and electrical systems. Free and open source software and firmware are developed to operate the tool. The OS4PP was validated against a wide range of discrete resistors and indium tin oxide (ITO) samples of different thicknesses both pre- and post-annealing. The OS4PP was then compared to two commercial proprietary systems. Results of resistors from 10 to 1 MΩ show errors of less than 1% for the OS4PP. The 3-D mapping of sheet resistance of ITO samples successfully demonstrated the automated capability to measure non-uniformities in large-area samples. The results indicate that all measured values are within the same order of magnitude when compared to two proprietary measurement systems. In conclusion, the OS4PP system, which costs less than 70% of manual proprietary systems, is comparable electrically while offering automated 100 micron positional accuracy for measuring sheet resistance over larger areas.
 ==Keywords==
 -D platform; four-point probe; conductivity; indium tin oxide; ITO; open source hardware; libre hardware; sheet resistance; transparent conducting oxide; TCO
+{{Statusboxtop}}
+{{status-design}}
+{{status-model}}
+{{status-prototype}}
+{{status-verified|[[MOST]]}}
+You can help Appropedia by contributing to the next step in this [[OSAT]]'s [[:Category:Status|status]].
+{{boxbottom}}
+==See Also==
+* [[Open Source Lab]]
+* [[Building research equipment with free, open-source hardware]]
+* [[Open source science]]
+* [[Open-source hardware]]
+* [[Open-source syringe pump]]
+[[category:MOST completed projects and publications]]
+[[Category:Science]]
+[[Category:Open source hardware]]
+[[Category:Technology]]
+[[Category:Engineering]]
+[[Category:DIY]]
+[[Category:Open source scientific hardware]]