Thermo-mechanical modeling of laser-driven non-contact transfer printing: two-dimensional analysis

Li, Rui; Li, Yuhang; Li, Chaofeng; Song, Jizhou; Saeidpouraza, Reza; Fang, Bo; Zhong, Yi; Ferreira, Placid M.; Li, Jinghua

doi:10.1039/c2sm25339a

Cited by 68 publications

(51 citation statements)

References 40 publications

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“…[84][85][86][87][88][89][90][91][92][93][94][95][96][97][98] The switching of contact area has the potential Adv. [84][85][86][87][88][89][90][91][92][93][94][95][96][97][98] The switching of contact area has the potential Adv.…”

Section: Area Switching (A)mentioning

confidence: 99%

Switchable Adhesives for Multifunctional Interfaces

Croll

Hosseini

Bartlett

2019

Adv Materials Technologies

132

107

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The reliable bonding or attachment of materials is critical in many industries, is a common necessity of daily life, and is key to functionality in numerous biological settings. [1][2][3][4][5][6][7][8][9][10][11] Adhesives Joining two materials with an adhesive is an extremely common activity, but is most often irreversible. However, emerging and current applications ranging from consumer and medical products to soft robotics and wearable bio-monitoring devices demand strong adhesives which can be easily removed on-demand and subsequently reused. This requires new paradigms in adhesive science and engineering, resulting in the emergence of new classes of multifunctional switchable adhesives. Here summarized is the current state of the art in switchable adhesive systems, focusing on how devices fit into the basic science of adhesion while providing performance metrics for comparison across current approaches. Using fracture mechanics as a guide, systems are classified as functioning under one of three basic mechanisms: near-interface, contact area, or mechanical. These mechanisms must be initiated or "triggered" by a specific input, which can include mechanical, electromagnetic, fluidic, or thermal stimuli. Triggers and adhesion switching performance are compared through the use of a "switching ratio," the interfacial energy release rate, and an estimate of mechanism timing. Finally, it is discussed that how the fundamental mechanisms relate to challenges and opportunities for switchable interfaces in future applications and adhesive systems.

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Section: Area Switching (A)mentioning

confidence: 99%

Switchable Adhesives for Multifunctional Interfaces

Croll

Hosseini

Bartlett

2019

Adv Materials Technologies

132

107

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“…The continuum element DC3D8 in the ABAQUS software [24] is adopted to model the three-dimensional geometries of µ-ILED (100 × 100 × 6.45 µm), BCB (8 mm × 100 µm × 6 µm) and PET (8 mm × 500 µm × 18 µm). The thermal conductivity, heat capacity and mass density are 160 W(m · K) −1 , 700 J(kg · K) −1 and 2329 kg m −3 for µ-ILED [25], 0.3 W(m · K) −1 , 1050 J(kg · K) −1 and 2180 kg m −3 for BCB [17], 0.24 W(m · K) −1 , 1370 J(kg · K) −1 and 1000 kg m −3 for PET [18]. The tissue is 4mm thick and has the in-plane dimension 9 × 4 mm.…”

Section: Thermal Analysis For a Single Inorganic Light-emitting Diodementioning

confidence: 99%

Thermal analysis of injectable, cellular-scale optoelectronics with pulsed power

Shi

Song

et al. 2013

Proc. R. Soc. A.

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An ability to insert electronic/optoelectronic systems into precise locations of biological tissues provides powerful capabilities, especially in neuroscience such as optogenetics where light can activate/deactivate critical cellular signalling and neural systems. In such cases, engineered thermal management is essential, to avoid adverse effects of heating on normal biological processes. Here, an analytic model of heat conduction is developed for microscale, inorganic light-emitting diodes (μ-ILEDs) in a pulsed operation in biological tissues. The analytic solutions agree well with both three-dimensional finite-element analysis and experiments. A simple scaling law for the maximum temperature increase is presented in terms of material (e.g. thermal diffusivity), geometric (e.g. μ-ILED size) and loading parameters (e.g. pulsed peak power, duty cycle and frequency). These results provide useful design guidelines not only for injectable μ-ILED systems, but also for other similar classes of electronic and optoelectronic components.

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“…The thermal conductivity along the z direction, specific heat capacity and density of the substrate are , c sub = 1460 J/kg/K, and ρ sub = 970 kg/m 3 , which correspond to those of PDMS 20 . The thermal conductivity, specific heat capacity and density of the skin are k skin = 0.37 W/m/K, c skin = 2846 J/kg/K, and ρ skin = 1000 kg/m 3 21 .…”

Section: Resultsmentioning

confidence: 99%

Thermal management of micro-scale inorganic light-emittng diodes on an orthotropic substrate for biointegrated applications

Chen

Xing

et al. 2017

Sci Rep

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The orthotropic material with the in-plane thermal conductivity much larger than the off-plane one can control the heat flow direction. This feature provides unique benefits in thermal management of micro-scale inorganic light-emitting diodes (μ-ILEDs) device for biointegrated applications by helping the heat dissipation from μ-ILEDs along the in-plane directions to lower the μ-ILED temperature and prevent the heat dissipation to the tissue along the off-plane direction to ensure a low tissue temperature. Three-dimensional analytical models, accounting for the coupling between the Fourier heat conduction in the μ-ILED device and the Pennes bioheat transfer in the human skin, are established to investigate the thermal behaviors of μ-ILEDs on an orthotropic substrate integrated with the human skin. Both the operations of μ-ILEDs in a constant mode and pulsed mode are studied. The maximum temperature increases of μ-ILED and in the tissue are derived and their dependences on various parameters such as the thermal conductivities of the orthotropic substrate, substrate thickness, and loading parameters (e.g., duty cycle, pulse period) are investigated. These results pave the theoretical foundation for the thermal management of μ-ILED devices for biointegrated applications.

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Thermo-mechanical modeling of laser-driven non-contact transfer printing: two-dimensional analysis

Cited by 68 publications

References 40 publications

Switchable Adhesives for Multifunctional Interfaces

Switchable Adhesives for Multifunctional Interfaces

Thermal analysis of injectable, cellular-scale optoelectronics with pulsed power

Thermal management of micro-scale inorganic light-emittng diodes on an orthotropic substrate for biointegrated applications

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