LabAdviser/Technology Research/Direct laser pyrolysis - Revision history

Mmat: /* Direct laser writing of pyrolytic carbon microelectrodes */

2025-05-27T15:52:53Z

Direct laser writing of pyrolytic carbon microelectrodes

← Older revision		Revision as of 17:52, 27 May 2025
Line 7:		Line 7:
	*Partners involved: ''DTU Nanolab, DTU Bioengineering''		*Partners involved: ''DTU Nanolab, DTU Bioengineering''
	*Project start: ''2019-06-01''		*Project start: ''2019-06-01''
	*~~Thesis~~ - ~~link to the thesis in orbit:~~ ''~~N/A~~''		*DTU Orbit: [https://orbit.dtu.dk/en/publications/direct-laser-writing-of-pyrolytic-carbon-microelectrodes ''Direct laser writing of pyrolytic carbon microelectrodes'']

	==Project description==		==Project description==

Emillu: /* Publications */

2021-06-01T13:47:52Z

Publications

← Older revision		Revision as of 15:47, 1 June 2021
Line 19:		Line 19:
	==Publications==		==Publications==

	''Selective Direct Laser Writing of Carbon Microelectrodes in Absorber-Modified SU-8''		''Selective Direct Laser Writing of Pyrolytic Carbon Microelectrodes in Absorber-Modified SU-8''

	https://www.mdpi.com/2072-666X/12/5/564		https://www.mdpi.com/2072-666X/12/5/564

	==Fabrication: Process Flows==		==Fabrication: Process Flows==

Emillu: /* Direct laser writing of pyrolytic carbon microelectrodes */

2021-06-01T13:46:53Z

Direct laser writing of pyrolytic carbon microelectrodes

← Older revision		Revision as of 15:46, 1 June 2021
Line 6:		Line 6:
	*Supervisors: ''Stephan Sylvest Keller and Jenny Katarina Emnéus''		*Supervisors: ''Stephan Sylvest Keller and Jenny Katarina Emnéus''
	*Partners involved: ''DTU Nanolab, DTU Bioengineering''		*Partners involved: ''DTU Nanolab, DTU Bioengineering''
	*Project start: ''~~yyyy~~-mm-dd''		*Project start: ''2019-06-01''
	*Thesis - link to the thesis in orbit: ''N/A''		*Thesis - link to the thesis in orbit: ''N/A''

Line 14:		Line 14:
	Carbon is an excellent electrode material for all sorts of applications, such as sensors [1, 2], super-capacitors [3], and biological scaffolds [4]. The reason for this is that carbon has a wide potential window [5], a high chemical stability [5], is biocompatible [4], cheap, and readily available [5]. Accurate patterning of the carbon electrodes rely on the patterning of the carbon precursor. This can be done by mold casting, UV-lithography [4, 6, 7], additive manufacturing [7], and DLW [1, 2]. The main advantage of DLW is the highly localized heating, which eliminates the need for a high-temperature compatible substrate during the pyrolysis of the carbon precursor. This reduces the overall thermal budget of the process and allows for writing carbon electrodes on flexible substrates [1, 2].		Carbon is an excellent electrode material for all sorts of applications, such as sensors [1, 2], super-capacitors [3], and biological scaffolds [4]. The reason for this is that carbon has a wide potential window [5], a high chemical stability [5], is biocompatible [4], cheap, and readily available [5]. Accurate patterning of the carbon electrodes rely on the patterning of the carbon precursor. This can be done by mold casting, UV-lithography [4, 6, 7], additive manufacturing [7], and DLW [1, 2]. The main advantage of DLW is the highly localized heating, which eliminates the need for a high-temperature compatible substrate during the pyrolysis of the carbon precursor. This reduces the overall thermal budget of the process and allows for writing carbon electrodes on flexible substrates [1, 2].

	So far, the project has mainly focused on LLP of SU-8, which has been modified by the inclusion of an absorber into the resin, in order for the SU-8 to absorb the laser light. The laser light is absorbed by the absorber in the SU-8 and due to the poor thermal conductivity, and the narrow spot size (ca. 32 µm) of the laser, a very rapid and local heating occur. Above ca. 900℃, the SU-8 is pyrolysed [4, 8], i.e. all non-carbonic species are ablated and only a distinct trace of carbon remains. The carbon is porous and conductive, thus making it a potent candidate for the abovementioned applications. The project is funded by the European Research Council (ERC).		So far, the project has mainly focused on LLP of SU-8, which has been modified by the inclusion of an absorber into the resin, in order for the SU-8 to absorb the laser light. The laser light is absorbed by the absorber in the SU-8 and due to the poor thermal conductivity, and the narrow spot size (ca. 32 µm) of the laser, a very rapid and local heating occur. Above ca. 900℃, the SU-8 is pyrolysed [4, 8], i.e. all non-carbonic species are ablated and only a distinct trace of carbon remains. The carbon is porous and conductive, thus making it a potent candidate for the abovementioned applications. The project is funded by the European Research Council (ERC) under the Horizon
			2020 framework programme grant no. 772370-PHOENEEX.

	==Publications==		==Publications==

			''Selective Direct Laser Writing of Carbon Microelectrodes in Absorber-Modified SU-8''

			https://www.mdpi.com/2072-666X/12/5/564

	==Fabrication: Process Flows==		==Fabrication: Process Flows==

Bghe: /* Direct laser writing of pyrolytic carbon microelectrodes */

2020-05-06T09:51:36Z

Direct laser writing of pyrolytic carbon microelectrodes

← Older revision		Revision as of 11:51, 6 May 2020
Line 6:		Line 6:
	*Supervisors: ''Stephan Sylvest Keller and Jenny Katarina Emnéus''		*Supervisors: ''Stephan Sylvest Keller and Jenny Katarina Emnéus''
	*Partners involved: ''DTU Nanolab, DTU Bioengineering''		*Partners involved: ''DTU Nanolab, DTU Bioengineering''
			*Project start: ''yyyy-mm-dd''
	*Thesis - link to the thesis in orbit: ''N/A''		*Thesis - link to the thesis in orbit: ''N/A''

Emillu: /* Project title */

2020-04-08T10:42:04Z

Project title

← Older revision		Revision as of 12:42, 8 April 2020
Line 1:		Line 1:
	'''Feedback to this page''': '''[mailto:labadviser@nanolab.dtu.dk?Subject=Feed%20back%20from%20page%20http://labadviser.nanolab.dtu.dk/index.php/LabAdviser/Technology_Research/Direct_laser_pyrolysis click here]'''		'''Feedback to this page''': '''[mailto:labadviser@nanolab.dtu.dk?Subject=Feed%20back%20from%20page%20http://labadviser.nanolab.dtu.dk/index.php/LabAdviser/Technology_Research/Direct_laser_pyrolysis click here]'''

	=''~~Project title~~''=		=''Direct laser writing of pyrolytic carbon microelectrodes''=
	*Project type: ''Ph.d project''~~, or other type~~		*Project type: ''Ph.D. project''
	*Project responsible: ''~~Name of responsible~~''		*Project responsible: ''Emil Ludvigsen''
	*Supervisors: ''~~Name of the supervisors~~''		*Supervisors: ''Stephan Sylvest Keller and Jenny Katarina Emnéus''
	*Partners involved: ''~~Institutes~~, ~~centers or others involved~~''		*Partners involved: ''DTU Nanolab, DTU Bioengineering''
	*Thesis: link to the thesis in orbit		*Thesis - link to the thesis in orbit: ''N/A''

	==Project description==		==Project description==
	~~''A description~~ of the project''		This project investigates how direct laser writing (DLW) may be employed for the fabrication of carbon microelectrodes by converting insulating carbon precursors such as polymers into conductive carbon traces through a process called local laser pyrolysis (LLP).

			Carbon is an excellent electrode material for all sorts of applications, such as sensors [1, 2], super-capacitors [3], and biological scaffolds [4]. The reason for this is that carbon has a wide potential window [5], a high chemical stability [5], is biocompatible [4], cheap, and readily available [5]. Accurate patterning of the carbon electrodes rely on the patterning of the carbon precursor. This can be done by mold casting, UV-lithography [4, 6, 7], additive manufacturing [7], and DLW [1, 2]. The main advantage of DLW is the highly localized heating, which eliminates the need for a high-temperature compatible substrate during the pyrolysis of the carbon precursor. This reduces the overall thermal budget of the process and allows for writing carbon electrodes on flexible substrates [1, 2].

			So far, the project has mainly focused on LLP of SU-8, which has been modified by the inclusion of an absorber into the resin, in order for the SU-8 to absorb the laser light. The laser light is absorbed by the absorber in the SU-8 and due to the poor thermal conductivity, and the narrow spot size (ca. 32 µm) of the laser, a very rapid and local heating occur. Above ca. 900℃, the SU-8 is pyrolysed [4, 8], i.e. all non-carbonic species are ablated and only a distinct trace of carbon remains. The carbon is porous and conductive, thus making it a potent candidate for the abovementioned applications. The project is funded by the European Research Council (ERC).

	==Publications==		==Publications==
	~~===Name of publication 1 made in this project===~~
	~~Reference and link to the publication~~

	*[[/Process flow form\|Process flow(s) relevant to this publication including links to Process development made in connection to this publication this is describes in either LabAdviser or Process2Share]]

	~~===Name of publication2 made in this project===~~
	~~Reference and link to the publication~~

	*[[/Process flow form\|Process flow(s) relevant to this publication including links to Process development made in connection to this publication this is describes in either LabAdviser or Process2Share]]

	===~~Name of publication3 made in this project~~===		==Fabrication: Process Flows==
	~~Reference and link to the publication~~

	*[[~~/Process flow form\|Process flow~~(s) ~~relevant to this publication including links to Process development made~~ in ~~connection to this publication this is describes in either~~ LabAdviser ~~or Process2Share]~~]		==References==
			*[1]: ''Luo, S., Hoang, P. T., & Liu, T. (2016). Direct laser writing for creating porous graphitic structures and their use for flexible and highly sensitive sensor and sensor arrays. Carbon, 96, 522-531.''
			*[2]: ''Rahimi, R., Ochoa, M., Tamayol, A., Khalili, S., Khademhosseini, A., & Ziaie, B. (2017). Highly stretchable potentiometric pH sensor fabricated via laser carbonization and machining of Carbon− Polyaniline composite. ACS applied materials & interfaces, 9(10), 9015-9023.''
			*[3]: ''El-Kady, M. F., Ihns, M., Li, M., Hwang, J. Y., Mousavi, M. F., Chaney, L., Lech, A. T., & Kaner, R. B. (2015). Engineering three-dimensional hybrid supercapacitors and microsupercapacitors for high-performance integrated energy storage. Proceedings of the National Academy of Sciences, 112(14), 4233-4238.''
			*[4]: ''Amato, L. (2013). Pyrolysed Carbon Scaffold for Bioelectrochemistry in Life Science. Kgs. Lyngby: Technical University of Denmark.''
			*[5]: ''McCreery, R. L. (2008). Advanced carbon electrode materials for molecular electrochemistry. Chemical reviews, 108(7), 2646-2687.''
			*[6]: ''Hemanth, S., Halder, A., Caviglia, C., Chi, Q., & Keller, S. S. (2018). 3D Carbon microelectrodes with bio-functionalized graphene for electrochemical biosensing. Biosensors, 8(3), 70.''
			*[7]: ''http://labadviser.nanolab.dtu.dk/index.php/LabAdviser/Technology_Research/Cleanroom_fabrication_of_3D_electrodes_with_lithography_and_pyrolysis''
			*[8]: ''Martinez-Duarte, R. (2014). SU-8 Photolithography as a Toolbox for Carbon MEMS. Micromachines, 5(3), 766-782.''

Bghe: Created page with "'''Feedback to this page''': '''[mailto:labadviser@nanolab.dtu.dk?Subject=Feed%20back%20from%20page%20http://labadviser.nanolab.dtu.dk/index.php/LabAdviser/Technology_Research..."

2020-03-13T15:47:18Z

Created page with "'''Feedback to this page''': '''[mailto:labadviser@nanolab.dtu.dk?Subject=Feed%20back%20from%20page%20http://labadviser.nanolab.dtu.dk/index.php/LabAdviser/Technology_Research..."

New page

'''Feedback to this page''': '''[mailto:labadviser@nanolab.dtu.dk?Subject=Feed%20back%20from%20page%20http://labadviser.nanolab.dtu.dk/index.php/LabAdviser/Technology_Research/Direct_laser_pyrolysis click here]'''

=''Project title''=
*Project type: ''Ph.d project'', or other type
*Project responsible: ''Name of responsible''
*Supervisors: ''Name of the supervisors''
*Partners involved: ''Institutes, centers or others involved''
*Thesis: link to the thesis in orbit

==Project description==
''A description of the project''

==Publications==
===Name of publication 1 made in this project===
Reference and link to the publication

*[[/Process flow form|Process flow(s) relevant to this publication including links to Process development made in connection to this publication this is describes in either LabAdviser or Process2Share]]

===Name of publication2 made in this project===
Reference and link to the publication

*[[/Process flow form|Process flow(s) relevant to this publication including links to Process development made in connection to this publication this is describes in either LabAdviser or Process2Share]]

===Name of publication3 made in this project===
Reference and link to the publication

*[[/Process flow form|Process flow(s) relevant to this publication including links to Process development made in connection to this publication this is describes in either LabAdviser or Process2Share]]