English

The research team has developed a mechanical luminescent touch screen that can work underwater

1430
2024-03-08 14:41:11
See translation

The optical properties of afterglow luminescent particles in mechanical luminescence and mechanical quenching have attracted much attention in various technological applications. A group of researchers from Pohang University of Science and Technology has attracted attention by developing an optical display technology with ALP that can write and erase messages underwater.

The team is composed of Professor Sei Kwang Hahn from the Department of Materials Science and Engineering at POSTECH and doctoral student Seong Jong Kim, who discovered a unique optical phenomenon in ALP. Subsequently, they successfully created a device to achieve this phenomenon. Their research results have been published in Advanced Functional Materials.

ALP has the ability to absorb energy and gradually release it, exhibiting mechanical luminescence when subjected to external physical pressure, and undergoing mechanical quenching when the emitted light disappears. Although active research has been conducted on the use of this technology for optical displays, the precise mechanism remains elusive.

In this study, the team delved into the effects of electron capture and charging on mechanical luminescence and quenching. They successfully unraveled the mechanisms that control these two phenomena. Based on this understanding, they will be able to achieve both phenomena simultaneously by combining ALP with very thin polymer materials. This combination leads to the creation of optical display patches that can be attached to the skin.

Display patches can convey information through writing by applying a small amount of pressure to the fingers. When exposed to ultraviolet light, the patch will reset to a blank state, similar to using an eraser to erase the content of a sketchbook. In addition, the touch screen of the display screen has moisture resistance and can maintain its function even after prolonged immersion in water.

Professor Sei Kwang Hahn, who led the research, said, "It can serve as a communication tool in situations where communication options are limited, such as underwater environments characterized by weak light or high humidity. It will also be used in wearable photon biosensors and phototherapy systems in extreme environments.".

Source: Laser Net

Related Recommendations
  • The laser direct writing lithography equipment market is expected to reach $160.25 million in 2029 with a compound growth rate of 5.21%

    Lithography machine is the key equipment for making high precision mask plate. Using a very fine laser beam, the highly precise line pattern is drawn on the mask substrate under the control of an extremely precise automatic control system.Laser direct writing is to use a laser beam with variable intensity to implement variable dose exposure on the resist material (photoresist) on the subst...

    2023-08-04
    See translation
  • The world's first tunable wavelength blue semiconductor laser

    Recently, researchers from Osaka University in Japan have developed the world's first compact, wavelength tunable blue semiconductor laser in a new study. This breakthrough paves the way for far ultraviolet light technology and brings enormous potential for applications such as virus inactivation and bacterial disinfection. The research results have been published in the journal Applied Physics Le...

    2024-11-23
    See translation
  • Researchers have demonstrated a breakthrough boson sampling method using ultracold atoms in optical lattices

    JILA researcher, National Institute of Standards and Technology (NIST) physicist, physics professor Adam Kaufman and his team at the University of Colorado Boulder, as well as NIST collaborators, demonstrated a new method of cross laser beam lattice sampling using ultracold atoms for boson sampling in two-dimensional optics. This study, recently published in the journal Nature, marks a significant...

    2024-05-10
    See translation
  • Micro laser opens the door to chip size sensors

    The new device is a frequency comb - a special type of laser that can generate multiple wavelengths of light, each with a fixed frequency interval. On the spectrogram, it looks a bit like the teeth of a comb. In approximately a quarter century since their first development, these "cursor rulers" have completely transformed various high-precision measurements from timing to molecular detection. In ...

    2024-03-13
    See translation
  • TDK introduces a new gold-wire-bonded optional NTC thermistor for laser diode temperature measurement

    TDK Corporation (TSE: 6762) announced the introduction of the new NTCWS series of NTC thermistors with gold wire bonding. These bonding NTC thermistors can be installed in packages via gold wire bonding to enable high precision temperature detection of laser diodes (LD) for optical communication. The series will begin mass production in September 2023.The use of LD devices in optical communication...

    2023-09-08
    See translation