Biodegradable Nanofibrous Polymeric Substrates for Generating Elastic and Flexible Electronics

Najafabadi, Alireza Hassani; Tamayol, Ali; Annabi, Nasim; Ochoa, Manuel; Mostafalu, Pooria; Akbari, Mohsen; Nikkhah, Mehdi; Rahimi, Rahim; Dokmeci, Mehmet R.; Sonkusale, Sameer; Ziaie, Babak; Khademhosseini, Ali

doi:10.1002/adma.201401537

Cited by 125 publications

(118 citation statements)

References 40 publications

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“…Typical biodegradable polymeric substrate materials are -polydimethylsiloxane, low density poly-ethylene, poly-vinyl alcohol, polyimide, polyethylene glycol and cellulose. [2][3][4][5][6][7] Except for cellulose, all other polymers need to be synthesized while cellulose is naturally occurring and is sustainable. It is produced by both plants and bacteria.…”

Section: Introductionmentioning

confidence: 99%

Flexible bacterial cellulose / permalloy nanocomposite xerogel sheets – Size scalable magnetic actuator-cum-electrical conductor

Thiruvengadam

Vitta

2017

AIP Advances

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Permalloy nanoparticles containing bacterial cellulose hydrogel obtained after reduction was compressed into a xerogel flexible sheet by hot pressing at 60 ºC at different pressures. The permalloy nanoparticles with an ordered structure have a bimodal size distribution centered around 25 nm and 190 nm. The smaller nanoparticles are superparamagnetic while the larger particles are ferromagnetic at room temperature. The sheets have a room temperature magnetisation of 20 emug-1 and a coercivity of 32 Oe. The electrical conductivity of the flexible sheets increases with hot pressing pressure from 7 Scm-1 to 40 Scm-1 at room temperature.

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Section: Introductionmentioning

confidence: 99%

Flexible bacterial cellulose / permalloy nanocomposite xerogel sheets – Size scalable magnetic actuator-cum-electrical conductor

Thiruvengadam

Vitta

2017

AIP Advances

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“…Recent studies have demonstrated that CNF substrates derived from wood 2,3 have good mechanical properties, low thermal expansion, good flexibility, and good biodegradability [4][5][6][7] and thus have the potential to serve as substrates for portable green electronics. Researchers have previously demonstrated the use of cellulose nanofibril composites as substrates for a variety of energy and electronic devices such as solar cells, [8][9][10] energy storage devices, 11 sensors, 12 organic TFTs, 13 lighting devices, 14 and displays.…”

mentioning

confidence: 99%

Microwave flexible transistors on cellulose nanofibrillated fiber substrates

Seo

Chang

Lee

et al. 2015

Applied Physics Letters

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In this paper, we demonstrate microwave flexible thin-film transistors (TFTs) on biodegradable substrates towards potential green portable devices. The combination of cellulose nanofibrillated fiber (CNF) substrate, which is a biobased and biodegradable platform, with transferrable single crystalline Si nanomembrane (Si NM), enables the realization of truly biodegradable, flexible, and high performance devices. Double-gate flexible Si NM TFTs built on a CNF substrate have shown an electron mobility of 160 cm2/V·s and fT and fmax of 4.9 GHz and 10.6 GHz, respectively. This demonstration proves the microwave frequency capability and, considering today's wide spread use of wireless devices, thus indicates the much wider utility of CNF substrates than that has been demonstrated before. The demonstration may also pave the way toward portable green devices that would generate less persistent waste and save more valuable resources.

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“…Recent technological advances in the miniaturization of sensors and the fabrication of smart materials have progressively changed the landscape of health care by providing the ability to develop devices that can continuously monitor a patient's health status [1][2][3][4][5] . Examples of such devices are electrocardiogram electrodes, temperature sensors, pH sensors, and flexible batteries that have been used for real-time health monitoring [6][7][8][9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

“…Several paper-based platforms have been developed recently, such as lateral flow immunoassays for the detection of analytes 18,19 , detection of DNA or proteins 20 , and electrochemical biosensing 21,22 . Recently, nanofibrous polymeric substrates have been developed to fabricate elastic and flexible electronics that can be sutured 3 . The fibrous microstructure of the substrate enables gas and liquid permeation and promotes the ability to pattern metallic electrodes on them.…”

Section: Introductionmentioning

confidence: 99%

A toolkit of thread-based microfluidics, sensors, and electronics for 3D tissue embedding for medical diagnostics

et al. 2016

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Threads, traditionally used in the apparel industry, have recently emerged as a promising material for the creation of tissue constructs and biomedical implants for organ replacement and repair. The wicking property and flexibility of threads also make them promising candidates for the creation of three-dimensional (3D) microfluidic circuits. In this paper, we report on thread-based microfluidic networks that interface intimately with biological tissues in three dimensions. We have also developed a suite of physical and chemical sensors integrated with microfluidic networks to monitor physiochemical tissue properties, all made from thread, for direct integration with tissues toward the realization of a thread-based diagnostic device (TDD) platform. The physical and chemical sensors are fabricated from nanomaterial-infused conductive threads and are connected to electronic circuitry using thread-based flexible interconnects for readout, signal conditioning, and wireless transmission. To demonstrate the suite of integrated sensors, we utilized TDD platforms to measure strain, as well as gastric and subcutaneous pH in vitro and in vivo.

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Biodegradable Nanofibrous Polymeric Substrates for Generating Elastic and Flexible Electronics

Cited by 125 publications

References 40 publications

Flexible bacterial cellulose / permalloy nanocomposite xerogel sheets – Size scalable magnetic actuator-cum-electrical conductor

Flexible bacterial cellulose / permalloy nanocomposite xerogel sheets – Size scalable magnetic actuator-cum-electrical conductor

Microwave flexible transistors on cellulose nanofibrillated fiber substrates

A toolkit of thread-based microfluidics, sensors, and electronics for 3D tissue embedding for medical diagnostics

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