907669 Sigma-Aldrich

Silver ink

75 wt%, LIFT printable

Synonym: Ag ink, Laser induced forward transfer

  • Linear Formula Ag



Related Categories Inks for Printing Applications, Materials Science, Organic and Printed Electronics, Printed Electronics
description   Silver content : 75 wt%
  Solvent : Diethylene Glycol Mono Butyl Ether (DGBE)
  Surface Tension : 28 dyn/cm (Pendant Drop)
particle size   50-70 nm (by Lumisizer)
  90-120 nm (by Lumisizer)
viscosity   50,000-100,000 cP (Shear Rate: 1 s-1
250cP - 450 cP (Shear Rate: 1000 s-1))
density   2.85-3.3



This Ag ink product is a conductive high viscous ink based on single-crystal silver nanoparticles in an organic solvent, has been designed for LIFT (Laser Induced Forward Transfer) digital printing and laser sintering.

The ink offers:
• Uniform and reproducible donor layer with low drying speed
• Stable accurate jetting in different types of laser systems, wide working window of jetting parameters
• High speed printing (20-50kHz), allowing high throughput
• Narrow patterning on plastic and glass substrates (line width ∼50 μm, height ∼0.5 μm, spacing ∼50 μm)
• Laser sintering of LIFT printed pattern, providing good electrical properties

Fit for:
LIFT digital printing
Additive electronic manufacturing
Printed electronics: RFID, FPD, Sensors

Laser induced forward transfer printing (LIFT) is a non-contact, nozzle-free, one step, direct laser writing process.
LIFT can operate under atmospheric conditions, is compatible with low laser fluences, allows the printing of organic and inorganic materials as well as biological elements. The printing process can take place from both liquid and solid phases. It further has a high lateral resolution only defined by the laser spot size. It is a method compatible with inorganic semiconductor sensor fabrication, OLED fabrication and bio printing.

Other Notes

Resistivity (4PP): After laser sintering* ≤ 8 μΩ·cm (≤ 5 bulk) for LIFT printed line (∼1-2 μm thick) on plastic substrate
*Parameters should be optimized depending on line geometry and substrate

Storage and Stability

Keep container tightly closed. Store at room temperature, do not heat above 60 °C and do not freeze.

Legal Information

Lumisizer is a trademark of LUM GmbH

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Advancements in the Fabrication of Integrated Organic Electronics

Research Center for Organic Electronics, Yamagata University, 4-3-16, Jonan, Yonezawa, Yamagata, 992-8510, Japan Email:,
Keywords: Amplification, Electronics, Industries, Mass spectrometry, Nucleic acid annealing, Organic electronics, Phase transitions, Semiconductor, Solar cells

Peer-Reviewed Papers


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