Triboelectric Nanogenerators: High Permittivity CaCu3Ti4O12 Particle‐Induced Internal Polarization Amplification for High Performance Triboelectric Nanogenerators (Adv. Energy Mater. 9/2020)

Kim, Jihye; Ryu, Hanjun; Lee, Jeong‐Hwan; Khan, Usman; Kwak, Sung Soo; Yoon, Hong‐Joon; Kim, Sang Woo

doi:10.1002/aenm.202070040

Cited by 24 publications

(7 citation statements)

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“…Kim et al also proposed a material design of embedding highpermittivity CaCu 3 Ti 4 O 12 (CCTO) nanoparticles into a butylated melamine formaldehyde (BMF) matrix to form CCTO@BMF. 37 With a high permittivity of 7500, CCTO nanoparticles induce strong internal polarization within the dielectric material when subjected to an electric field generated by triboelectric charges. Under identical electric field conditions, the CCTO@BMF (CCTO of 1 wt %) exhibited three times greater internal polarization compared to pure BMF.…”

Section: Materials Design For High Output Performances Of Self-powere...mentioning

confidence: 99%

Self-Powered Medical Implants Using Triboelectric Technology

Lee,

Kim,

Hyun

et al. 2024

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Electronic medicines represent a class of biomedical technology that exploits electrical impulses to achieve diagnostic and therapeutic purposes. They allow patients to identify their physiological conditions themselves through effortless diagnosis methods, no longer confining treatment solely to medical examinations by physicians. Their clinical practices also operate as an alternative therapeutic approach to pharmacological interventions, wherein the electrical impulses are directly administered to biological tissues with minimal adverse effects. However, unlike wearable electronic medicines that offer the convenient replacement of their energy storages, medical implants require surgical removal for recharging energy storages, thereby imposing substantial physical and psychological burdens on patients. To address these challenges, many efforts are widely conducted to develop selfpowered medical implants by utilizing energy harvesting technologies to extend the lifetime of energy storages.Compared to their applications in wearable devices, energy harvesting technologies for powering implantable electronics encounter technical constraints, because the human body exhibits the limited depth penetration of light sources and hemostasis reactions on body temperature. Triboelectric energy harvesting technologies have been highlighted as a promising energy solution of medical implants, exploiting diverse mechanical energy sources to generate electrical energy in vivo. Benefitting from the simple device structure favorable for device miniaturization, triboelectric nanogenerators (TENGs) are extensively explored. Herein, we introduce self-powered medical implants driven by the triboelectric mechanism, providing an exposition on their recent research trends. First, we describe the varying device structures and energy generation performances of TENGs, upon their mechanical energy sources with various frequency ranges. Most devices powered by high-frequency energy sources exhibit superior electrical output performances compared to those powered by low-frequency energy sources. However, the current status indicates that these energy solutions still fall short of meeting the energy consumption demands for their instantaneous application in commercialized electronic medicines.As potential solutions to meet the energy consumption demand, we describe material design strategies to aim for high output performance of triboelectric nanogenerators. Beyond their conventional role as mere power supplies for commercialized medical implants, battery-less electronic medicines based on TENGs hold the great potential for diverse clinical applications. This Account also presents our previous studies of self-powered electronic medicines to carry out clinical practices such as wound healing, tissue engineering, neurostimulation, neuroregeneration, and antibacterial activity. Lastly, we illustrate advanced technologies in materials and devices design with their applicability based on the implanta...

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Section: Materials Design For High Output Performances Of Self-powere...mentioning

confidence: 99%

Self-Powered Medical Implants Using Triboelectric Technology

Lee,

Kim,

Hyun

et al. 2024

Acc. Mater. Res.

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“…4 TENGs are an innovative technology that make use of electrification and electrostatic induction to convert unpredictable mechanical energy created by human actions (such as hand tapping or walking) and natural events (such as wind, waves, or rain) or vibrations from vehicles into an electrical current. 5–15…”

Section: Introductionmentioning

confidence: 99%

“…Various technologies have been used to achieve high performance such as plasma processing, 16,17 3D-surface pattern lasers, 18,19 layer by layer assembly, 20–22 electron blocking layers, 23,24 porous materials, 25,26 thermal imprinting lithography, 27 charge-trapping effects, 18 ultrasound technique, 28,29 high dielectric constant materials ( e.g. , barium titanate loaded polydimethylsiloxane (PDMS), strontium-doped barium titanate loaded PDMS), 13,30–35 and the electron double layer effect. 36 These technologies have increased output performance.…”

Section: Introductionmentioning

confidence: 99%

Highly stretchable hydroxyapatite bionanocomposite for high-performance triboelectric nanogenerators

Luu,

Huynh,

Kim

et al. 2023

Nanoscale

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“…Graphene-based tribotronics is also well explored in the domain of flexible electronics . It is noteworthy to mention the growing interest in renewable and sustainable energy-harvesting systems in order to find out an alternative to the fossil fuel-based energy. − …”

Section: Introductionmentioning

confidence: 99%

Development of a Sustainable and Flexible Piezoelectric-cum-Triboelectric Energy Harvester Comprising a Simple Commodity Cotton Fabric

Bairagi

Banerjee

Chowdhury

et al. 2021

ACS Sustainable Chem. Eng.

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Herein, a fully sustainable, flexible, and bio-based piezoelectric-cum-triboelectric energy harvester has been developed using a simple commodity cotton fabric. In the present study, a novel attempt has been made to prepare a piezoelectric and triboelectric energy harvester in a combined manner from the same fabric substrate. The developed mercerized cotton fabric-based energy harvester has shown a significant open-circuit peak-to-peak voltage of ∼47 V and current of ∼1 μA, simply by finger tapping (under a higher amount of pressure). The same device generated an open-circuit peak-to-peak voltage and short-circuit current of 1.77 V and 100 nA, respectively, in response to impact forces (20 N at 7 Hz frequency) applied using a customized force-imparting device. The reason for the enhanced energy of the device made of mercerized fabric has been correlated with structural characteristics of the fabrics. The piezoelectric response of the cotton fabric-based energy harvester has been observed mainly due to the strong intramolecular and intermolecular hydrogen bonds present in the cellulose chains. These strong hydrogen bonds act as strong dipoles inside the cotton fabric structure, for which the resultant dipole moment is very high. On the other hand, triboelectric response of the device is primarily due to the charges developed at the interfaces of a highly electropositive aluminum electrode and highly electronegative polypropylene (PP) of the respective encapsulated devices as per triboelectric series. The developed piezoelectric-cum-triboelectric energy harvester can successfully be utilized as an efficient wearable to power small-scale electronic gadgets.

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Triboelectric Nanogenerators: High Permittivity CaCu₃Ti₄O₁₂ Particle‐Induced Internal Polarization Amplification for High Performance Triboelectric Nanogenerators (Adv. Energy Mater. 9/2020)

Cited by 24 publications

References 0 publications

Self-Powered Medical Implants Using Triboelectric Technology

Self-Powered Medical Implants Using Triboelectric Technology

Highly stretchable hydroxyapatite bionanocomposite for high-performance triboelectric nanogenerators

Development of a Sustainable and Flexible Piezoelectric-cum-Triboelectric Energy Harvester Comprising a Simple Commodity Cotton Fabric

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