A smart contact lens is an item connected to the human eye like a typical lens and provides numerous info. Recently, Google and others are developing wise contact lenses for displays that can implement AR. The accomplishment of KERI-UNIST lies in the reality that it is an innovation that can realize AR by printing micro-patterns on a lens display screen using a 3D printer without applying voltage. The research groups micro-pattern innovation is very fine (7.2 micrometers) that can be used to wise contact lens screens for AR, and the color is uniform and constant.
Games such as the popular Pokemon Go can likewise be taken pleasure in with clever contact lenses, not mobile phones.
The accomplishment of KERI-UNIST depends on the truth that it is an innovation that can recognize AR by printing micro-patterns on a lens display utilizing a 3D printer without using voltage. The key is the Meniscus of used ink. The Meniscus is a phenomenon in which a curved surface area is formed on the outer wall without water droplets bursting due to capillary action when water beads are gently pushed or pulled with a certain pressure.
The meniscus of the acidic-ferric-ferricyanide ink is formed on the substrate when the ink-filled micronozzle and substrate come in contact. When water evaporates from the meniscus, the water molecules and precursor ions move toward the meniscus surface area by convective circulation, producing a preferential build-up of the precursor ions in the external part of the meniscus. As with standard electroplating, the substrate utilized to have to be a conductor when voltage was applied, but a terrific benefit of using the meniscus phenomenon is that there is no restriction on the substrate that can be used due to the fact that condensation occurs by natural evaporation of the solvent.
Image presents a schematic of the PB-based EC display with a navigation function in an AR clever contact lens that shows directions to the destination to a user on the EC display by receiving GPS coordinates in genuine time. Credit: Korea Electrotechnology Research Institute.
Through the accurate motion of the nozzle, the crystallization of Prussian blue is constantly carried out, thus forming micro-patterns. Patterns can be formed not only on flat surface areas however also on curved surfaces. The research study groups micro-pattern innovation is very fine (7.2 micrometers) that can be applied to smart contact lens displays for AR, and the color is consistent and continuous.
The main anticipated application area is navigation. Simply by wearing a lens, navigation unfolds in front of an individuals eyes through AR. Games such as the popular Pokemon Go can likewise be delighted in with wise contact lenses, not mobile phones.
Dr. Seol Seung-Kwons of KERI stated, “Our achievement is an advancement of 3D printing technology that can print practical micro-patterns on non-planner substrate that can advertise sophisticated clever contact lenses to execute AR.” He included, “It will considerably contribute to the miniaturization and adaptability of AR gadgets.”.
Cover image of Advanced Science Meniscus-guided micro-printing of Prussian Blue is understood by the localized crystallization of FeFe( CN) 6 on the substrate confined by the ink meniscus and thermal reduction of the crystallized FeFe( CN) 6. This technique is capable of being utilized as an electrochromic display to offer real-time directions on an augmented truth (AR) clever contact lens device. Credit: Korea Electrotechnology Research Institute.
The related research outcomes were recently released as a cover short article in Advanced Science (IF 17.521/ JCR 4.71%), a world-renowned scholastic journal in the field of materials science, in acknowledgment of its quality.
The research group believes that this accomplishment will draw in a great deal of attention from companies associated with batteries and biosensors that require micro-patterning of Prussian blue in addition to the AR field, and plans to find related demand business and promote technology transfer.
On the other hand, KERI is a government-funded research study institute under the Ministry of Science and ICTs National Research Council for Science and Technology. Dr. Seol Seung-Kwon is likewise a professor at the KERI campus of the University of Science and Technology (UST).
Notes.
A new wise contact lens has been established that can supply navigation details through augmented truth. The lens is connected to the human eye like a regular contact lens and utilizes a 3D printing procedure for its core innovation.
Core 3D printing process innovation for wise contact lenses that can execute increased truth (AR)- based navigation has actually been developed by Dr. Seol Seung-Kwons Smart 3D Printing Research Team at the Korea Electrotechnology Research Institute (KERI) and Professor Lim-Doo Jeongs group at Ulsan National Institute of Science and Technology (UNIST).
A smart contact lens is a product attached to the human eye like a typical lens and supplies numerous info. Just recently, Google and others are establishing smart contact lenses for display screens that can carry out AR.
Image revealing meniscus phenomenon. Credit: Korea Electrotechnology Research Institute
, which limited the production of sophisticated screens that can express numerous info (letters, numbers, images).”.
Electrochromism: a phenomenon where the color of a compound changes reversibly due to an electrochemical reaction.
Plating is the process of using a thin layer of another metal to improve the surface area condition of an object. In this process, if electrical energy is used, it is called electroplating, and if chemical reactions are utilized without electricity, it is referred to as electroless plating. Particularly electroplating is primarily utilized in the production of precious jewelry such as rings.
Reference: “Meniscus-Guided Micro-Printing of Prussian Blue for Smart Electrochromic Display” by Je Hyeong Kim, Seobin Park, Jinhyuck Ahn, Jaeyeon Pyo, Hayeol Kim, Namhun Kim, Im Doo Jung and Seung Kwon Seol, 28 November 2022, Advanced Science.DOI: 10.1002/ advs.202205588.