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Electronic gold ink 鈥� one of Sweden's most promising research projects

16 June 2026

Thor Balkhed

Professor Klas Tybrandt and Assistant Professor Aiman Rahmanudin at 糖心网页版 have been selected for IVA鈥檚 30鈥憀ist for Research Impact 2026.

Nanogold wires in a moving solution Thor Balkhed
A concentrated mixture of gold nanowires in water 鈥� much like a super-small 'gold spaghetti' soup 鈥� that acts as a special ink for printing flexible electronics that are both transparent and bendable.

The list highlights their work on gold nanowires for large鈥憇cale printed electronics 鈥� a technology with the potential to redefine how future flexible displays, solar cells, and sensors are manufactured.

The Royal Swedish Academy of Engineering Sciences (IVA) aims to strengthen Sweden鈥檚 ability to translate academic research into innovation, competitiveness, and tangible societal benefit. Publishing IVA鈥檚 annual list is one of its tools. Each year, a committee from academia, industry, and the public sector selects around 30 projects considered to have exceptional potential to address major societal challenges 鈥� from climate and energy to digitalization and health.

Klas Tybrandt, Aiman Rhmanudin och Venkata Kishore Perla.st氓r i labbkl盲der i renrummet, Campus Norrk枚ping. Thor Balkhed
From left: Prof. Klas Tybrandt, Asst. Prof. Aiman Rahmanudin and Dr. Venkata Kishore Perla Jakob von Heideken was unavailable for the photograph.
Klas Tybrandt鈥檚 research tackles one of the most persistent problems in modern electronics: today鈥檚 transparent electrodes for applications such as solar cells and wearable devices are often brittle, unstable, or too expensive to manufacture at scale. Silver and copper nanowires have long been promising alternatives, but they degrade when exposed to oxygen, UV light, and moisture.

Gold nanowires offer nearly all the desired properties:

* High conductivity 鈥� thanks to their network of long, thin wires
* Transparency 鈥� light passes between the wires
* Flexibility 鈥� the material withstands bending and stretching
* Chemical and thermal stability 鈥� unlike silver and copper

The obstacle has been cost. Existing gold nanowires are short, difficult to produce, and can cost over a million dollars per gram, limiting their use to niche biomedical applications.

Nanogold wires in a moving solution Thor Balkhed
When the solution is rotated the nano wires get more visible.
Tybrandt鈥檚 team 鈥� including Dr. Aiman Rahmanudin, Dr. Venkata Kishore Perla and Jakob von Heideken 鈥� has developed a cost鈥� and energy鈥慹fficient method to produce long gold nanowires at scale and turn them into a printable ink. This ink could replace today鈥檚 metal oxides and silver nanowires.

The result is electronics that are more durable, energy鈥慹fficient, affordable, easier to recycle, and optimized for flexible and wearable technologies. This opens the door to flexible solar cells, printed displays, optical components, high鈥憄erformance sensors, and next鈥慻eneration wearables such as smart contact lenses and e鈥憇kin.
The technology is moving toward pilot鈥憇cale production, and the research team is seeking industrial partners to scale up applications.Tunna blad av tryckt elektronik med guldnanotr氓dar.Thor Balkhed

Stacked sheets of printed transparent conductive films on plastic foils produced using gold nanowire inks targeting applications such as flexible displays, solar cells and optical sensors.听

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Contact

Photo of Klas Tybrandt

Klas Tybrandt

Professor, Head of Unit
Photo of Aiman Rahmanudin

Aiman Rahmanudin

Assistant Professor

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