scholarly journals Personal electronics printing via tapping mode composite liquid metal ink delivery and adhesion mechanism

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Yi Zheng ◽  
Zhi-Zhu He ◽  
Jun Yang ◽  
Jing Liu
Keyword(s):  
Liquid Metal ◽  
Adhesion Mechanism ◽  
Tapping Mode ◽  
Liquid Metal Ink

Liquid Metal Ink Enabled Rapid Prototyping of Electrochemical Sensor for Wireless Glucose Detection on the Platform of Mobile Phone

2015 ◽  
Vol 9 (4) ◽  
Author(s):  
Liting Yi ◽  
Jingjing Li ◽  
Cangran Guo ◽  
Lei Li ◽  
Jing Liu
Keyword(s):  
Liquid Metal ◽  
Mobile Phone ◽  
Detection System ◽  
Point Of Care ◽  
Low Cost ◽  
Smart Phone ◽  
Disease Diagnosis ◽  
Glucose Detection ◽  
Sensor Material ◽  
Liquid Metal Ink

Pervasive detection of blood glucose is rather critical for the real-time disease diagnosis which would provide valuable guidance for treatment planning. Here, we established a health care platform for this purpose through incorporating the glucose detection with liquid metal printed sensor and the smart phone monitoring system together. The liquid metal ink composed of bismuth indium stannic (BIS) alloy was identified as an appropriate sensor material to be quickly written or printed on polyvinyl chloride (PVC) substrate at around 59 °C to form desired electrodes. It thus eliminated the complicated procedures as usually required in conventional sensor fabrication strategies. The alloy electrodes were characterized via cyclic voltammetry to demonstrate their practical functionality. Further, unlike using the commonly adopted glucometer, a smart phone was developed as the data acquisition and display center to help improve the portability and ubiquitous virtue of the detection system. Glucose solution in different concentrations was assayed via this platform. It was shown that there is a good linear relationship between the concentration and the integral value of the curve recorded by the mobile phone, which confirms the feasibility of the present method. This quantitative point-of-care system has pervasive feature and is expected to be very useful for future low-cost electrochemical detection.

Self-sintering liquid metal ink with laponite for flexible electronics

2021 ◽  
Author(s):  
Pengcheng Wu ◽  
Lu-yu Zhou ◽  
Shang Lv ◽  
JianZhong Fu ◽  
Yong He
Keyword(s):  
Liquid Metal ◽  
Flexible Electronics ◽  
Soft Robotics ◽  
Stretchable Electronics ◽  
Self Powered ◽  
Widespread Interest ◽  
Liquid Metal Ink ◽  
Flexible And Stretchable Electronics

Liquid-metal (LM)-based flexible and stretchable electronics have attracted widespread interest in soft robotics, self-powered devices and electronic skins. Although nanometerization can facilitate deposition and patterning of LMs onto substrates, subsequent...

Direct printing and assembly of FM radio at the user end via liquid metal printer

Circuit World ◽  
2014 ◽  
Vol 40 (4) ◽  
pp. 134-140 ◽  
Author(s):  
Jun Yang ◽  
Jing Liu
Keyword(s):  
Liquid Metal ◽  
Large Scale ◽  
Room Temperature ◽  
Mechanical Stability ◽  
Circuit Board ◽  
Electronic Components ◽  
Time Saving ◽  
Content Type ◽  
Fm Radio ◽  
Liquid Metal Ink

Purpose – This paper aims to demonstrate the practicability of the liquid metal printer, developed in the authors’ laboratory, in the direct manufacture and assembly of circuit boards at the end customer side using GaIn24.5 alloy as printing ink at room temperature. Design/methodology/approach – A practical procedure for printing a real designed frequency modulation (FM) radio circuit on flexible and transparent substrate using liquid metal printer was established. Necessary electronic components are then assembled on this circuit board. To enhance the mechanical stability of the FM radio circuit board, we further package the circuit board using room temperature vulcanizing silicone rubber. Finally, an efficient way to recycle the liquid metal ink and electronic components is presented at the end of circuit board’s life cycle. Findings – Methods of designing the circuit patterns that are applicable to liquid metal printer are similar to the conventional printed circuit board (PCB) designing strategies. The procedure of applying liquid metal printer for printing the circuits is entirely automatic, cost-effective and highly time-saving, which allows the user to print out desired device in a moment. Through appropriate packaging, the FM radio circuit board can be flexibly used. These PCBs own many outstanding merits including easy modification and stretchability. Nearly all liquid metal ink and components can be recycled. Originality/value – The present end-customer-oriented liquid metal printing opens the way for large-scale personal electronics manufacture which is expected to initiate many emerging applications in education, design, industry, entertainment and more maker targets.

scholarly journals Formation mechanism analysis and experimental investigation of single-step printing customized circuits by liquid-metal direct writing

2021 ◽  
Vol 12 (1) ◽  
pp. 143-154
Author(s):  
Yan Pu Chao ◽  
Hao Yi ◽  
Hui Cen ◽  
Yao Hui Li
Keyword(s):  
Liquid Metal ◽  
Printed Circuit Board ◽  
High Surface ◽  
Single Step ◽  
Green Technology ◽  
Circuit Board ◽  
Process Window ◽  
Mechanism Analysis ◽  
Direct Writing ◽  
Liquid Metal Ink

Abstract. Liquid-metal direct writing is a cost-effective and green technology, which is very promising for the customized fabrication of flexible circuits and functional devices. However, owing to the high surface tension of metal ink, the printed circuits are prone to intermittent outflow, large forming size error, and unstable forming. The smooth flowing and conveying of liquid-metal ink are still huge challenges that need significant attention. Herein, the force mechanism of liquid-metal ink transported by ball rotation and translation of the printing head was analysed, and the wetting characteristics of liquid metal on the surface of different substrates and its influence on forming morphology were investigated. The stable output printing of gallium indium alloy (GaIn24.5) liquid metal was realized. The changing characteristics of the shape and size of the liquid-metal circuits formed under different printing speeds and writing pressures were experimentally studied. The effective process window for obtaining the best circuit quality was established. Based on this, a flexible printed circuit board and functional electronic pattern were successfully printed under the writing pressure W=1 N and printing speed F800 mm min−1. The printed lines of GaIn24.5 exhibited a smooth surface, uniform width, small size error, and ability to connect electronic components and conduct electricity. This research proposes a new technical approach for customized printing of personalized electronic circuits and has important application prospects in the future.

Enhanced adhesion between liquid metal ink and the wetted printer paper for direct writing electronic circuits

2019 ◽  
Vol 95 ◽  
pp. 202-207 ◽  
Author(s):  
Lei Wang ◽  
Manxiang Wang ◽  
Jinrong Lu ◽  
Ryanda Enggar Anugrah Ardhi ◽  
Jing Liu ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Direct Writing ◽  
Electronic Circuits ◽  
Liquid Metal Ink

scholarly journals Biomedical Implementation of Liquid Metal Ink as Drawable ECG Electrode and Skin Circuit

PLoS ONE ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. e58771 ◽  
Author(s):  
Yang Yu ◽  
Jie Zhang ◽  
Jing Liu
Keyword(s):  
Liquid Metal ◽  
Liquid Metal Ink

Direct Writing and Repairable Paper Flexible Electronics Using Nickel-Liquid Metal Ink

2018 ◽  
Vol 5 (20) ◽  
pp. 1800571 ◽  
Author(s):  
Hao Chang ◽  
Rui Guo ◽  
Ziqiao Sun ◽  
Hongzhang Wang ◽  
Yi Hou ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Flexible Electronics ◽  
Direct Writing ◽  
Liquid Metal Ink

Additive Manufacturing of Conformable Electronics on Complex Objects Through Combined Use of Liquid Metal Ink and Packaging Material

2013 ◽  
Author(s):  
Qin Zhang ◽  
Jing Liu
Keyword(s):  
Liquid Metal ◽  
Electronic Device ◽  
Optoelectronic Device ◽  
Packaging Material ◽  
Complex Object ◽  
Complex Objects ◽  
Electrical Connection ◽  
Flexible Packaging ◽  
Energy Consuming ◽  
Liquid Metal Ink

Conventional electronics manufacturing strategies are generally complicated, time, water, material and energy consuming. Besides, building an electronic device on a complex object generally requests a series of different connecting wires which would make the machine in a mess. Here from an alternative approach, we proposed an innovative method of realizing conformable electronic connection by the low melting point metal ink and the related flexible packaging material for quickly manufacturing electronics. The liquid metal ink could easily and directly be written on a series of complex surfaces and then coated with the packaging material which is to offer mechanical strength and prevent it from air oxygenization. For illustrating purpose, an electrical connection of LED circuit on cylindrical surface, concave, inclined structure, planes of right angle and sphere was demonstrated. Such optoelectronic device appears rather compact without any evident connecting wires exposing out. Further, a thermal cycle experiment (−40°C∼120°C) was designed to test the variation of the electrical properties of the working sample. It is disclosed that the conductive line covered by the packaging material has a temperature coefficient of 0.255 mΩ/°C (T0 = −16°C) and finally an increasing rate of only 4.24% in resistance after all thermal aging cycles. This electrical connection method is expected to have a significant impact in surface mount technology. Its applications will not only in industry but also can change the way we interact with each other and our everyday life.

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