Highly Stretchable Ga-In Liquid Metal as Conductive Ink for Flexible Bioelectronics, 10-30 g/bottle, CFBCIHSGILM

Highly stretchable gallium-indium liquid metal (LM) conductive inks—most notably EGaIn (75.5 wt% Ga, 24.5 wt% In; melting point ~ 15.5°C) and Galinstan (Ga-In-Sn; melting point ~ -19°C)—are core materials for flexible bioelectronics. Because they remain in a true liquid state at physiological and room temperatures, they exhibit near-zero mechanical fatigue and maintain electrical continuity under extreme deformation (> 500–1000% strain).

The main features and electrochemical properties of the Stretchable Ga-In liquid metal are: (1) Fluidic Metal Continuity: Unlike conventional flake/nanoparticle percolation networks that break apart under tension, liquid metal droplets flow and reconfigure under strain, enabling metallic-level bulk conductivity (~ 3.4 * 10^4 to 3.4 * 10^6 S/m) with minimal electromechanical resistance degradation. (2) Self-Passivating Native Oxide Skin (Ga2O3): Rapid spontaneous formation of a sub-3 nm native gallium oxide shell provides mechanical elasticity and non-Newtonian shear-thinning behavior, stabilizing printed patterns and preventing droplet dewetting. (3) Sintering & Electrical Activation: As-printed micro/nano-droplets (LMNPs) are typically coated in insulating Ga2O3 shells. They require mechanical pressure (calendering/stretching), chemical vapor exposure (acid/base vapors), or laser sintering to rupture the oxide shells and form continuous conductive pathways. (4) Autonomous Self-Healing: The low melting point and high surface mobility allow ruptured conductive traces to coalesce spontaneously upon mechanical contact, providing self-healing interconnects for e-skin and soft robotics.

Part Number	CFBCIHSGILM (C-FB-CI-HSGILM)
Material	Ga-In liquid metal alloy
Color	Grey
Density	3.6 g.cm3
Viscosity	3*10^4 cP
Elongation Rate	0-1000%
Cell Compatibility	Yes
RoHS Compliance	Yes
Operation Instructions	(A) Stirring (10 min): The Li-In conductive inks should be completely stirred to obtain slurry uniformity and excellent mobility.  (B) Screen print is an appropriate coating method and the screen mesh 250-350 is recommended. Normally TPU, SBS, EVA, and other silicone-based materials can be used as coating substrates. (C) After screen print, the wet film was dried at 80°C for 30 min. The pattern's color will change from grey to off-white. (D) After fully drying, stretch the substrates to activate it.
Primary Applications	(1) Wearable Electronics          (2) Stretchable Interconnect Wires                                 (3) Stretchable Circuit Board      (4) Electronic Skin & Sensor                                 (5) Strain Sensor Arrays
Package Grade	10 g, 20 g, and 30 g/pack

References:

1. M. H. Kim, et al., From Materials to Devices: An Engineering Perspective on Designing Gallium-Based Liquid Metal Bioelectronics, Acc. Mater. Res. (2026) 7 (5): 473–484.
2. C. Bayin. et al. Gallium-Based Liquid Metal Composites for Flexible Sensors: Design Strategies, Sensing Functions, and Application, Adv. Electronic Mater., 2026, 12, e00018.