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Related Concept Videos

Layers of the Epidermis01:21

Layers of the Epidermis

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The epidermis, the outermost layer of the skin, is composed of several distinct layers. From deep to superficial, the layers of the epidermis are as follows:
Stratum Basale
Stratum basale, also known as the stratum germinativum, is the deepest layer of the epidermis. It is composed of a single layer of actively dividing cells called basal cells or basal keratinocytes. These cells constantly undergo cell division to replenish the upper layers of the epidermis. Additionally, melanocytes, which...
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Cells of the Epidermis01:24

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The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
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Reticular Dermis01:15

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The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer.
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Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
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The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular...
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Enhancing vertically stacked skin display compactness via discrete layer preparation.

Yichen Cai1, Xiangyu Hou2, Wei Chen3,4,5,6

  • 1Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore.

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Researchers developed all-organic active-matrix organic light-emitting diodes using discrete layer preparation and lamination. This method achieves high aperture ratios and conformability for advanced, skin-like displays.

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Area of Science:

  • Materials Science
  • Electronics Engineering
  • Display Technology

Background:

  • Traditional organic light-emitting diodes (OLEDs) face challenges in achieving high aperture ratios and conformability.
  • The development of flexible and wearable electronics necessitates novel display technologies.

Purpose of the Study:

  • To investigate a fabrication method for all-organic active-matrix OLEDs.
  • To enhance the aperture ratio and conformability of OLED displays.
  • To explore the potential of these displays for skin-like electronic applications.

Main Methods:

  • Discrete preparation of functional layers.
  • Lamination of prepared layers to form the active-matrix OLED structure.
  • Characterization of the resulting device performance, focusing on aperture ratio and mechanical flexibility.

Main Results:

  • Achieved an ultrahigh aperture ratio in the fabricated all-organic active-matrix OLEDs.
  • Demonstrated reliable conformability of the devices, suitable for flexible applications.
  • The fabrication process proved effective for creating high-performance, skin-like displays.

Conclusions:

  • Discrete layer preparation followed by lamination is a viable strategy for producing high-performance all-organic active-matrix OLEDs.
  • The developed technology shows significant potential for next-generation skin-like and conformable displays.
  • This approach paves the way for advanced wearable electronic devices.