Thermal conductivity enhancement of laser induced graphene foam upon P3HT infiltration

Smith, Matthew; Luong, Duy Xuan; Bougher, Thomas L.; Kalaitzidou, Kyriaki; Tour, James M.; Cola, Baratunde A.

doi:10.1063/1.4972790

Cited by 30 publications

(14 citation statements)

References 31 publications

(32 reference statements)

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“…[8] Instead, laser-induced graphene (LIG), with its simple fabrication and exceptional electrical properties, serves as an excellent building block for macroscale graphene materials. [1,[12][13][14][15][16][17] LIG and its sister material LIG fiber (LIGF), [18] a fibrous version of LIG, are made by irradiating commercial polyimide (PI) film with a CO 2 laser (10.6 µm). The PI is converted to porous graphene film through this one-step laser photothermal process.…”

Section: Introductionmentioning

confidence: 99%

Laminated Object Manufacturing of 3D‐Printed Laser‐Induced Graphene Foams

et al. 2018

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Laser-induced graphene (LIG), a graphene structure synthesized by a one-step process through laser treatment of commercial polyimide (PI) film in an ambient atmosphere, has been shown to be a versatile material in applications ranging from energy storage to water treatment. However, the process as developed produces only a 2D product on the PI substrate. Here, a 3D LIG foam printing process is developed on the basis of laminated object manufacturing, a widely used additive-manufacturing technique. A subtractive laser-milling process to yield further refinements to the 3D structures is also developed and shown here. By combining both techniques, various 3D graphene objects are printed. The LIG foams show good electrical conductivity and mechanical strength, as well as viability in various energy storage and flexible electronic sensor applications.

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Section: Introductionmentioning

confidence: 99%

Laminated Object Manufacturing of 3D‐Printed Laser‐Induced Graphene Foams

et al. 2018

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“…However, a recently discovered, promising alternative to printed graphene circuits is laser inscribed graphene (LIG). 14,[20][21] LIG is a one-step lithography-free process upon which a laser converts sp 3 hybridized carbon found in substrates such as polyimide into sp 2 hybridized carbon-the carbon allotrope found in graphene. LIG is a versatile technique that has been used to produce graphene films that are superhydrophobic, 22 doped with metal oxide nanocrystals, 20 functionalized with polymer, 21 or developed into vertically-aligned graphene fibers.…”

mentioning

confidence: 99%

“…14,[20][21] LIG is a one-step lithography-free process upon which a laser converts sp 3 hybridized carbon found in substrates such as polyimide into sp 2 hybridized carbon-the carbon allotrope found in graphene. LIG is a versatile technique that has been used to produce graphene films that are superhydrophobic, 22 doped with metal oxide nanocrystals, 20 functionalized with polymer, 21 or developed into vertically-aligned graphene fibers. 23 Typically, a rapid pulse (femtosecond), infrared laser is used to selectively transform distinct regions or patterns of polyimide film (Kapton tape) into sp 2 hybridized carbon, viz., porous graphene.…”

mentioning

confidence: 99%

Flexible Laser-Induced Graphene for Nitrogen Sensing in Soil

Garland¹,

McLamore

Cavallaro

et al. 2018

ACS Appl. Mater. Interfaces

146

107

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Flexible graphene electronics are rapidly gaining interest, but their widespread implementation has been impeded by challenges with ink preparation, ink printing, and post-print annealing processes. Laser-induced graphene (LIG) promises a facile alternative by creating flexible graphene electronics on polyimide substrates through a one-step laser writing fabrication method. Herein we demonstrate the use of LIG, created through a low-cost UV laser, for electrochemical ion selective sensing of plant-available nitrogen (i.e., both ammonium and nitrate ions: NH4+ and NO3-) in soil samples. The laser used to create the LIG was operated at distinct pulse rates (10, 20, 30, 40, and 50 ms) in order to maximize the LIG electrochemical reactivity. Results illustrated that a laser pulse rate of 20 ms led to a high percentage of sp2 carbon (77%) and optimal peak oxidation current of 120 uA during ferricyanide cyclic voltammetry. Therefore, LIG electrodes created with a 20 ms pulse rate were consequently functionalized with distinct ionophores specific to NH4+(nonactin) or NO3-(tridodecylmethylammonium nitrate) within polyvinyl chloride (PVC)-based membranes to create distinct solid contact ion selective electrodes (SC-ISEs) for NH4+ and NO3-ion sensing respectively. The LIG SC-ISEs displayed near Nernstian sensitivities of 51.7 ± 7.8 mV/decade (NH4+) and -54.8 ± 2.5 mV/ decade (NO3-), detection limits of 28.2 ± 25.0 uM (NH4+) and 20.6 ± 14.8 uM (NO3-), low long-term drift of 0.93 mV/hr (NH4+) sensors and -5.3 μV/hr (NO3-) sensors and linear sensing ranges within 10-5-10-1 M for both sensors. Moreover, soil slurry sensing was performed and recovery percentages of 96% and 95% were obtained for added NH4+and NO3-, respectively. These results, combined with a facile fabrication that does not require metallic nanoparticle decoration, make these LIG electrochemical sensors appealing for a wide range of in field or point-of-service applications for soil health management. ABSTRACTFlexible graphene electronics are rapidly gaining interest, but their widespread implementation has been impeded by challenges with ink preparation, ink printing, and postprint annealing processes. Laser-induced graphene (LIG) promises a facile alternative by creating flexible graphene electronics on polyimide substrates through a one-step laser writing fabrication method. Herein we demonstrate the use of LIG, created through a low-cost UV laser, for electrochemical ion selective sensing of plant-available nitrogen (i.e., both ammonium and nitrate ions: NH 4 + and NO 3 -metallic nanoparticle decoration, make these LIG electrochemical sensors appealing for a wide range of in-field or point-of-service applications for soil health management.

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“…Furthermore, as compared with PI whose conductivity is only 0.15 W m −1 K −1 , the LIG shows a much higher conductivity (≈0.7 W m −1 K −1 ). [ 26 ] In this case, the LIG region shows much faster cooling rate than that of the PI tape. Notably, the high photothermal conversion rate in combination with the fast heat loss to water may contribute to the rapid formation of a localized temperature gradient, enabling dynamic actuation via Marangoni effect.…”

Section: Resultsmentioning

confidence: 95%

Laser‐Induced Graphene Tapes as Origami and Stick‐On Labels for Photothermal Manipulation via Marangoni Effect

Wang

Han

Yang

et al. 2020

Adv Funct Materials

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Direct light‐to‐work conversion enables remote actuation through a non‐contact manner, among which the photothermal Marangoni effect is significant for developing light‐driven robots because of the diversity of applicable photothermal materials and light sources, as well as the high energy conversion efficiency. However, the lack of nanotechnologies that enable flexible integration of advanced photothermal materials with actuators of complex configurations significantly restricts their practical applications. In this paper, laser‐induced graphene (LIG) tape is reported as stick‐on photothermal labels for developing light‐driven actuators based on the Marangoni effect. With the help of direct laser writing technology, graphene patterns with superior photothermal properties are prepared on the PI tape. The patterned LIG tape can be stuck on any desired objects and generates an asymmetric photothermal field under light irradiation, forming a photothermal Marangoni actuator. Additionally, the PI tape with LIG patterns can be folded into 3D origami actuators that permit photothermal Marangoni actuation including both translation and rotation. The graphene‐based photothermal Marangoni actuators feature biocompatibility, which is confirmed by MDA‐MB‐231 cells proliferation experiments. Owing to the excellent photothermal property of LIG patterns, the as‐produced photothermal actuators can be manipulated by a variety of light sources, holding great promise for developing light‐driven soft robots.

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Thermal conductivity enhancement of laser induced graphene foam upon P3HT infiltration

Cited by 30 publications

References 31 publications

Laminated Object Manufacturing of 3D‐Printed Laser‐Induced Graphene Foams

Laminated Object Manufacturing of 3D‐Printed Laser‐Induced Graphene Foams

Flexible Laser-Induced Graphene for Nitrogen Sensing in Soil

Laser‐Induced Graphene Tapes as Origami and Stick‐On Labels for Photothermal Manipulation via Marangoni Effect

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