3D-structured soft bioelectronic devices with crack-free metal patterns

Moon, Hyunmin; Park, Byungwook; Hong, Daun; Park, Ki‐Su; Lee, Sanghoon; Kim, Sohee

doi:10.1016/j.snb.2021.130123

Cited by 9 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ultrathin parylene coating can cover the porous PDMS surface and serve as an interlayer to alleviate the larger mechanical and thermal mismatch between metal and PDMS and favorable for subsequent OLEDs deposition. [27][28][29] Then small molecule OLEDs were fabricated on the composite substrate by highvacuum thermal evaporation (Figure 1d). After releasing the prestrain, an orderly and uniform wrinkled structure were generated due to the difference of elastic modulus between PDMS (0.36-1.74 MPa) and parylene (2.76 GPa) (Figure 1e).…”

Section: Resultsmentioning

confidence: 99%

“…However, when the thickness of parylene film is below 1.5 µm, metallic films on the parylene interlayers would generate micro-wrinkles without forming flat electrode patterns, making the OLED prone to breakdown. [27] Thus, the thickness of 1.5 µm was chosen for wrinkles fabrication. The influence of the multi-layered OLEDs on the wrinkle's formation is negligible in this work, since the period and amplitude of the wrinkles formed on parylene/ PDMS and OLED/parylene/PDMS are quite similar as shown in Figure S4 (Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Stretchable Organic Light‐Emitting Devices with Invisible Orderly Wrinkles by using a Transfer‐Free Technique

Chen

Yin

et al. 2022

Adv Materials Technologies

View full text Add to dashboard Cite

Stretchable organic light‐emitting devices (SOLEDs) based on orderly wrinkles have become a promising candidate for the new‐generation deformable displays because of their high‐optoelectronic performance and stretching stability. However, the complex thin film transfer process to form the wrinkles and the decreased display quality caused by the large‐period wrinkles with a few hundreds of microns are obstacles to their practical applications. Herein, a simple transfer‐free technique is designed to introduce the orderly wrinkles with a much smaller period of 70 µm into the SOLEDs, which is the smallest value reported to date for the orderly wrinkles integrated in the SOLEDs. The small‐period wrinkles are invisible by naked eyes and beneficial to the applications of the SOLEDs in high‐quality stretchable displays. The electroluminescence performance of the SOLED with 20% stretchability are comparable to those of the rigid OLEDs on glass substrates. After 2000 cycles of stretching, the luminance of the device remained at 90% of its initial value. Meantime, the transfer‐free technique is compatible with the flexible encapsulation process. The luminance of the encapsulated SOLEDs exhibit negligible decline after 600‐min continuous operation under ambient condition. This work provides an effective solution for achieving high‐performance SOLEDs by a simple process.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Stretchable Organic Light‐Emitting Devices with Invisible Orderly Wrinkles by using a Transfer‐Free Technique

Chen

Yin

et al. 2022

Adv Materials Technologies

View full text Add to dashboard Cite

show abstract

“…Recently, a fabrication method for stable metal patterns on a soft PDMS substrate was established using an intermediate parylene C layer, [120] which improved the compatibility of PDMS with microfabrication techniques. [121,122] Various efforts have been made to utilize PDMS substrates for ECoG electrodes. [95,102,104,[123][124][125]…”

Section: Elastic Materialsmentioning

confidence: 99%

Electrocorticogram (ECoG): Engineering Approaches and Clinical Challenges for Translational Medicine

Moon,

Kwon,

Eun

et al. 2024

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

Electrocorticogram (ECoG) is an electrophysiological signal that results from the summation of neuronal activity near the cortical surface. To record ECoG signals, the scalp and skull are surgically opened and electrodes are placed on the cortical surface, either epidurally or subdurally. Owing to its improved spatiotemporal resolution and signal quality compared with electroencephalography, it is widely used to diagnose and treat neurological disorders in clinical settings for several decades, despite the invasiveness of ECoG. Recently, ECoG is applied in research to explore brain functions and connectivity, brain‐computer interfaces, and brain‐machine interfaces. In addition to the need for ECoG in neuroscience research, ECoG devices have advanced in terms of materials, fabrication, and function to overcome the limitations of commercially available ECoG arrays. Here, the conventional use of ECoG in clinical medicine, the new applications of ECoG in basic neuroscience research, and the future challenges in translating recent developments in ECoG devices for clinical use are described.

show abstract

“…Besides, there are number of recent studies discussing the peripheral neural interfaces' modification with the employment of multiple materials such as polymers, metals or hybrid designs to substitute silicon-based interfaces which explains the importance of the selection of biomaterials in neuroprosthetics. 42…”

Section: Peripheral Neural Interfacesmentioning

confidence: 99%

Exploring polymeric biomaterials in developing neural prostheses

Silvaragi

Vigneswari

Murugaiyah

et al. 2022

Journal of Bioactive and Compatible Polymers

View full text Add to dashboard Cite

Neuroprosthetics, with a range of applications such as cognitive, auditory, pain relief, recording, motor, and visual prosthetics have emerged as a promising field in recent years. However, poor electrical conductivity, a high disparity between tissue and interfaces and the onset of reactive gliosis post-implantation remains major challenges in the development of neuroprostheses. The choice of biomaterials in designing the neural interfaces’ in neuroprosthetic applications is of high importance, as the overall sustained performance of neuroprosthetic devices is based on the features of materials used for the neural interfaces. Numerous biomaterials, such as metals and carbon-based materials, have been used in neuroprosthetics thus far. Nonetheless, neuroprosthetics made from polymeric biomaterials are in high demand due to their high biocompatibility, conductivity, and biostability. Furthermore, polymeric biomaterials can be used as a hybrid design to overcome the limitations of other co-biomaterials. This article makes an attempt to review the polymeric biomaterials involved in this cutting-edge technology utilized for different purposes such as substrates, coatings, and miniaturization of electrodes, that might help in enriching our understanding on neuroprosthetics.

show abstract

3D-structured soft bioelectronic devices with crack-free metal patterns

Cited by 9 publications

References 33 publications

Stretchable Organic Light‐Emitting Devices with Invisible Orderly Wrinkles by using a Transfer‐Free Technique

Stretchable Organic Light‐Emitting Devices with Invisible Orderly Wrinkles by using a Transfer‐Free Technique

Electrocorticogram (ECoG): Engineering Approaches and Clinical Challenges for Translational Medicine

Exploring polymeric biomaterials in developing neural prostheses

Contact Info

Product

Resources

About