How Soft Bioelectronics Are Changing Cardiac Research – Laser-structured layer by layer
Heart disease remains the leading cause of death worldwide, responsible for nearly 18 million deaths annually, according to the WHO. While medical imaging and diagnostics have advanced, simultaneously monitoring multiple parameters inside a beating heart remains a challenge - especially with high resolution and minimal invasiveness.
A new generation of implantable soft bioelectronics is now addressing this unmet need. Flexible substrates with multilayer metallization are crucial for the reliable functioning of this groundbreaking diagnostics tools.
A Breakthrough from The George Washington University
In a study published in early 2025, researchers from the Department of Biomedical Engineering at The George Washington University presented a multimodal optoelectronic array that enables real-time, in vivo cardiac mapping of electrical and optical signals.
Authors: Afsaneh Asgari, Julian Daniel, Igor Efimov et al.
This flexible implant integrates:
- Transparent microelectrodes
- Micro-LEDs
- Photodiodes
- Optical filters
All layered into a skin-like device that conforms to the heart’s surface, providing simultaneous electrical and optical data - a first in cardiac bioinstrumentation.
Where LPKF Comes In: Precision PCB for a Living Organ
Fabricating such a complex, flexible and miniaturized device is no trivial task. The team used a laser-based cutting process to define the geometry of the array - built on thin flexible substrates with multilayer metallization.
The LPKF ProtoLaser U4 was key to:
- Defining micro-scale geometries without damaging delicate polymer layers
- Structuring multilayer flexible PCBs with Cu and PET
- Rapid in-lab iteration of custom designs with surgical precision
- Avoiding heat stress due to short-pulse UV laser ablation
Why LPKF’s technology matters? The quality and functionality of the implant depend directly on the precision of the conductive and optical layers - and the laser defines them all.
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From Prototype to High Potential: LPKF Enables the Process
The ProtoLaser U4 is more than a tool - it's a critical enabler for rapid bioelectronic development. For researchers developing implantables, neurointerfaces, or personalized diagnostics, LPKF’s systems offer:
High-definition patterning
Material flexibility
Repeatability for regulated research and device prototyping
Working on advanced bioelectronics or soft implantable devices?
Contact us to explore how our prototyping systems can support your innovations.
