The MicroField technical programme is organised into eight connected development tracks. The tracks deliberately overlap: results from one feed directly into the next, and the dependencies between them are managed so that progress in process development, device design and test reinforce one another rather than compete. Taken together they give a cohesive route from first principles through to manufacturable micro-systems, and keep our effort firmly focused on practical advances in microelectronics and semiconductor technology.

Development Track 1: Building and Running the Micro-Transfer-Printing Line. This first track covers the design, assembly and commissioning of a flexible μTP line built for real production rather than one-off experiments. The aim is a dependable facility that can both prove new semiconductor assembly steps and refine them, with new tooling and workflows chosen for throughput and yield from the outset.

In practice this means fixing the overall layout of the line and pinning down every technical prerequisite an industrial user will depend on. We build out a complete process framework so the steps can be transferred cleanly into a real factory, with particular attention to smart production systems where throughput and consistency decide whether a method is worth adopting. The goal throughout is to streamline the flow and hold it to the standards that demanding products require.

Development Track 2: High-Sensitivity Magnetic Sensors by Micro-Transfer-Printing

This track turns transfer printing into a manufacturable step for CMOS integrated circuits that carry printed high-sensitivity magnetic sensors directly on the die. Placing the sensing element on the same chip as its read-out electronics improves signal quality and removes a whole layer of packaging, and doing it with transfer printing keeps the process compatible with standard foundry flows. The payoff is smaller, more capable sensing devices that are still cheap to make in volume.

Development Track 3: Micro-Transfer-Printing for Optical Sensors. Here we adapt the printing process to the fabrication of optical sensor components, where sensitive elements must be positioned on their target substrate to tight tolerances. We develop micro-scale assembly methods that hold both accuracy and reliability across a full run, which is what makes it realistic to build more capable optical sensing systems and to add functions that monolithic fabrication cannot reach.

A central theme is the heterogeneous integration of optical filters, so that they drop cleanly into existing sensor designs. The practical target is to move filter printing directly onto optical sensors from a demonstration into an industrial process inside the MicroField line, lifting the performance of optical sensing through precise, repeatable, high-volume manufacturing.

Development Track 4: Micro-Transfer-Printing for Silicon Photonics. This track applies transfer printing to silicon photonics, where optical components must be set onto a silicon platform with sub-micron precision. Bringing dissimilar materials together this way lets a single photonic circuit combine functions that no one material supports on its own, which is the key to denser, higher-performance integrated optics.

The concrete aim is a production flow that transfers III-V active devices onto silicon photonics wafers and then qualifies that flow to manufacturing standards. Combining the light-handling strengths of III-V materials with the maturity of silicon is what makes compact optical links practical, and we prove the process by taking two distinct receiver chip designs all the way to qualified production.

Development Track 5: Micro-Transfer-Printing of LED Devices. This track develops a precise, efficient way to place light-emitting diodes onto a range of target substrates. Being able to position individual LEDs exactly where a design needs them underpins the next generation of displays, smart lighting and other complex electronic assemblies.

A specific deliverable is an LED driver integrated circuit (IC) built to work with printed RGB LEDs. Combining driver and emitters in one compact package suits applications in smart mobility and connected environments, where space and power are tight; it lowers cost and widens the range of designs the technology can support.

Development Track 6: Micro-Transfer Printing for Biomedical Implants

Here transfer printing places III-V light-emitting diodes (LEDs) and silicon photodetectors directly onto silicon-nitride photonic integrated circuits. The target application is an implantable optical system for continuous glucose monitoring, a case that pushes miniaturisation, biocompatibility and reliability to their limits and shows what tightly integrated photonics can do in healthcare.

Development Track 7: Sharing Results, Standards and Take-Up

This track is about making sure the work is used, not shelved. We communicate findings clearly, feed them into emerging industry standards, and help the wider technology sector put new methods into practice. The aim is a shared understanding of what the technology can do, and active collaboration across the field, rather than knowledge that stays locked inside one team.

Development Track 8: Programme and Innovation Management

This track keeps the technical programme on course and commercially sharp. It covers the practical business of the work — contracts, budgets, legal and administrative matters, and the ethical questions that come with it — and pairs that with active innovation management, spotting and acting on new opportunities as they appear. The point is to get the most value from the effort and to make sure the results reach as far as possible.