Over 1 hour continuous-wave operation of photonic crystal lasers

Kim, Sunghwan; Lee, Jeongkug; Jeon, Heonsu

doi:10.1364/oe.19.000001

Cited by 16 publications

(11 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tattooing is based on the van der Waals bonding that is a versatile and reliable way to yield a seamless interface between two different material systems. [ 28–30 ] The SNF layer was directly contacted to the skin and therefore it could separate the CNT layer from the skin. This could protect the skin from possible harms by the CNT electrode such as electrical current and direct exposure to CNTs, along with skin‐compatible and functionable properties.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional and Ultrathin Electronic Tattoo for On‐Skin Diagnostic and Therapeutic Applications

Gogurla

Kim²,

Cho³

et al. 2021

Advanced Materials

Self Cite

102

View full text Add to dashboard Cite

Epidermal electronic systems for detecting electrophysiological signals, sensing, therapy, and drug delivery are at the frontier in man–machine interfacing for healthcare. However, it is still a challenge to develop multifunctional bioapplications with minimal invasiveness, biocompatibility, and stable electrical performance under various mechanical deformations of biological tissues. In this study, a natural silk protein with carbon nanotubes (CNTs) is utilized to realize an epidermal electronic tattoo (E‐tattoo) system for multifunctional applications that address these challenging issues through dispersing highly conductive CNTs onto the biocompatible silk nanofibrous networks with porous nature to construct skin‐adhesive ultrathin electronic patches. Individual components that incorporate electrically and optically active heaters, a temperature sensor (temperature coefficient of resistance of 5.2 × 10−3 °C−1), a stimulator for drug delivery (>500 µm penetration depth in skin), and real‐time electrophysiological signal detectors are described. This strategy of E‐tattoos integrated onto human skin can open a new route to a next‐generation electronic platform for wearable and epidermal bioapplications.

show abstract

Section: Resultsmentioning

confidence: 99%

Multifunctional and Ultrathin Electronic Tattoo for On‐Skin Diagnostic and Therapeutic Applications

Gogurla

Kim²,

Cho³

et al. 2021

Advanced Materials

Self Cite

102

View full text Add to dashboard Cite

show abstract

“…Here, the skin‐tattooing is achieved via the van der Waals bonding that is an adaptable and reliable method to realize the conformal interface between the materials. [ 40,41 ] After use, the E‐tattoos can be removed with water due to the weakening in the physical bond between tattoo and skin.…”

Section: Resultsmentioning

confidence: 99%

Self‐Powered and Imperceptible Electronic Tattoos Based on Silk Protein Nanofiber and Carbon Nanotubes for Human–Machine Interfaces

Gogurla

Kim

2021

Advanced Energy Materials

Self Cite

View full text Add to dashboard Cite

seamlessly. Therefore, electronic tattoo (E-tattoo) stickers with ultrathin, lightweight, and skin-adhesive electronics on top can be suitable candidates. In addition, self-powered electronics enable the untethered operation of on-skin E-tattoos and thereby expand their application range.Various self-powered E-skins with sensing applications based on piezoelectricity, [11][12][13] piezoresistivity, [14,15] capacitance, [16,17] and triboelectricity [18][19][20] have been reported. Triboelectricity, which is a physical phenomenon based on contactinduced electrification, is promising owing to the high electrical conversion efficiency for external stimuli such as mechanical vibrations, [21][22][23] sound, [24,25] wind, [26,27] water drops, [28,29] and contact with skin. [30,31] Unlike other physical mechanism-based E-skins that require complicated structures with multielectrode and thick substrates, [14][15][16] singleelectrode-based triboelectric devices are suitable build-up, self-powered, and skin-compatible sensors for next-generation HMIs because of their simplicity, broad material choice, and easy access. Zhao et al. presented a user-interactive self-powered E-skin based on the single-electrode triboelectric-optical model for touch operation. [32] Peng et al. presented a breathable, biodegradable, and self-powered E-skin with polymer nanofibers sandwiched between silver nanowire electrodes for the monitoring of electrophysiological signals and whole-body movements. [33] In addition, wearable flexible patches on selfpowered sensing platforms for robotics control and touch sensors have been presented. [34] However, achieving a conformal interface between the reported triboelectric-based E-skins [32][33][34][35][36][37] on the skin is difficult because some substrate materials are not biocompatible and the adhesive tapes used for measurements can cause irritation. Therefore, biocompatible, lightweight, ultrathin, on-skin stretchable, and self-powered E-tattoos are necessary for the untethered and imperceptible integration of electronics on human skin. Silk protein, a natural biopolymer, has been attracted much interest to realize self-powered E-tattoos with the aforementioned essential features, because of its tunable structural and mechanical properties and ease to functionalize or dope with other conductive materials. [38,39] In this paper, skin-compatible, ultrathin, lightweight, deformable, and biocompatible self-powered sensory E-tattoos based Triboelectric electronic skins (E-skins) can be used as primary interactive devices for human-machine interfaces (HMIs). However, devices for seamless on-skin operations must be soft and deformable, and attachable to and compatible with the skin. In this paper, a substrate-free, skin-compatible, skin-attachable, mechanically deformable, and self-powered E-tattoo sticker consisting of carbon nanotubes (CNTs) and silk nanofibers (SNFs) is presented. The E-tattoo can be imperceptibly tattooed on the skin and removed with water. When the device touches naked skin, triboelec...

show abstract

“…We have demonstrated that co‐extruded multilayer polymers promise to be an easily mass‐produced laser material offering advantages over corrugated grating‐based DFB lasers due to the large area available for lasing, flexibility and ease of manipulation, and wide range of mechanisms available for tuning the output. Further work will be needed to achieve some of the performance characteristics that have been demonstrated in long‐studied corrugated grating‐based DFB lasers such as low thresholds, extended operation, and the use of microchip lasers or even LEDs as pump sources. Further improvements in tunability and extended operation are possible with improved dyes and/or quantum dot emissive sources …”

Section: Prospects and Promisesmentioning

confidence: 99%

Melt‐processed polymer multilayer distributed feedback lasers: Progress and prospects

Andrews

Crescimanno

Singer

et al. 2013

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

Reflecting recent progress in the functionalization of roll-to-roll processed polymer multilayers, this review describes the development and characterization of versatile large-area multilayer distributed feedback (DFB) lasers. These developments are reviewed in the broader context of microresonator lasers, with a brief tutorial on the theory and experiment needed to understand their unique features. Of particular interest is the broad tunability of these DFB lasers by simple modification of their structure, mechanical stretching, and temperature. Prospects for commercialization of polymer multilayer DFB lasers are also discussed.

show abstract

Over 1 hour continuous-wave operation of photonic crystal lasers

Cited by 16 publications

References 15 publications

Multifunctional and Ultrathin Electronic Tattoo for On‐Skin Diagnostic and Therapeutic Applications

Multifunctional and Ultrathin Electronic Tattoo for On‐Skin Diagnostic and Therapeutic Applications

Self‐Powered and Imperceptible Electronic Tattoos Based on Silk Protein Nanofiber and Carbon Nanotubes for Human–Machine Interfaces

Melt‐processed polymer multilayer distributed feedback lasers: Progress and prospects

Contact Info

Product

Resources

About