The central problem the team set out to solve is one that has dogged electronic textiles for years: how to embed genuine circuit-level functionality into fibres without wasting the fibre itself or creating fragile connections. Previous strategies often attached discrete components onto the surface of a fibre or built devices that used only a small fraction of the fibre volume. Interconnects between components tend to be unstable under the repeated bending, stretching and abrasion that clothing endures. Poor fibre utilization means much of the material contributes nothing to the electronics, while unstable interconnects mean the circuits fail exactly when a garment is treated like a garment.

The Donghua group’s answer is to make the fibre itself the circuit. Their microfluidic spinning process flows different functional materials through the channels of a spinning device, combining conductive layers with layers that perform specific functions. By switching the flow rates of the incoming streams during spinning, the researchers can arrange distinct functional modules along the fibre axis in a programmable sequence, rather like writing code that the spinning apparatus executes in material form. The team supported this design step with fluid-encoding simulations, drawing on established understanding of how flow velocity governs behaviour in microfluidic channels, to control where each module forms within the continuously drawn fibre.

Crucially, the researchers designed their modules around four fundamental types of signal conversion. Electroluminescent modules handle electron-to-photon conversion, turning electrical drive signals into emitted light. Resistor and capacitor modules perform electron-to-electron conversion, providing the passive components needed for analogue signal processing such as filtering. Organic electrochemical transistor modules carry out electron-to-ion conversion, translating electronic currents into ionic motion within a semiconductor polymer and thereby enabling digital logic operations. Finally, electro-quasistatic modules provide electro-quasistatic modulation, which the team exploited for touchless sensing and control. Because all four module families can be produced and integrated within the same spinning process, a single fibre can combine them into a working circuit tailored to a specific task.

The demonstrations span an impressive functional range. Electroluminescent IC fibres emit light, and a single fibre can encode a variety of luminescent colours along its length, suggesting displays or lighting elements woven directly into fabric. Resistor-capacitor IC fibres perform analogue signal processing, implementing functions such as tuneable filtering. Fibres built around organic electrochemical transistors execute digital logic, including inverter circuits, bringing Boolean operations into the thread itself. The electro-quasistatic IC fibres are perhaps the most striking: they sense the approach of a body or hand without contact, exploiting the quasistatic electric field coupling between the fibre and nearby conductors, and can translate that sensing into control signals.

To show that this touchless capability is more than a laboratory curiosity, the researchers connected their electro-quasistatic fibres to real machines. In supplementary demonstrations, the fibres controlled a virtual drone, a physical drone and a robotic arm, and a robotic arm equipped with the fibres automatically tracked a target object. The team even calibrated the relationship between applied voltage and sensing distance using a simple cardboard sheet wrapped in aluminium foil, and tested how nearby conductors interfere with the fibres’ operation, work that speaks to the practical engineering needed before such sensors can live inside clothing in the messy electromagnetic environment of daily life.

Durability, the historic weak point of e-textiles, receives serious attention. The IC fibres can be woven, sewn and arranged into textiles and, according to the researchers, withstand repeated deformation and washing. This mechanical resilience builds on the group’s earlier work on stretchable conductive fibres, in which a worm-shaped graphene microlayer enabled ultrahigh tensile strain and stable conductance, and on their broader research into soft fibre electronics based on semiconducting polymers. By embedding the functional layers within the fibre structure rather than coating them on top, the spinning process protects the electronics from the mechanical abuse that destroys surface-mounted devices.

The study situates itself within a rapidly maturing field. Recent years have seen large-area display textiles, fabric-based optical communication using diode fibres, digital electronics in fibres enabling fabric-based machine-learning inference, a single-fibre computer capable of textile networks and distributed inference, and a chipless textile electronics platform based on body-coupled fibres. Related work has produced fibre-integrated circuits through multilayered spiral architectures and axially encoded metafibers created by sequence spinning. What distinguishes the new approach is the programmability of the spinning process itself: rather than assembling pre-made components, the researchers encode circuit topology into the fluid flows that form the fibre, so the circuit design and the fibre manufacturing become a single continuous operation.

The implications reach toward what the authors frame through the lens of embodied intelligence, the idea that sensing, processing and feedback should be integrated into a physical platform rather than separated across devices. A textile based on IC fibres could, in principle, sense its environment, process the signals locally and respond with light, logic or actuation, all within the fabric. The researchers also point to applications in robotics, where their fibres already steer machines, and in wearable platforms that merge biosensing, computation and feedback. The fact that the team has released source data through Figshare and code through Code Ocean underscores the engineering orientation of the work, inviting others to reproduce the fluid-encoding process and build on the module library.

Challenges remain before IC fibres appear in commercial garments. The reported work demonstrates individual functional fibre types and their integration, but scaling production, achieving the transistor densities of conventional silicon, and managing power delivery through textile interconnects are all open problems. The electro-quasistatic sensing mode, while elegant, will require careful engineering to remain reliable around the conductors and interference sources that surround any wearer. Yet the core achievement stands: a spinning process in which the circuit is programmed into the fibre as it forms, yielding threads that glow, compute, filter and sense, and that survive the washing machine. If the module library continues to grow, the line between textile and computer may soon be measured in micrometres rather than millimetres.

Subject of Research: Programmable microfluidic spinning of fibres containing integrated circuit modules for smart textiles

Article Title: Programmable spinning of integrated circuit fibres

Article References: Sun, F., Chen, W., Jiang, F., Wang, K., Liu, F., Hong, Y., Han, X., Zhao, M., Zhu, Y., Sun, H., Wang, H., Wang, G., & Zhu, M. (2026). Programmable spinning of integrated circuit fibres. Nature Electronics. https://doi.org/10.1038/s41928-026-01712-2

Image Credits: AI Generated

DOI: 10.1038/s41928-026-01712-2

Keywords: electronic textiles, microfluidic spinning, integrated circuit fibres, organic electrochemical transistors, electroluminescence, wearable electronics, soft materials, touchless sensing, semiconducting polymers, flexible electronics, smart fabrics, Nature Electronics

The central idea is deceptively simple. Instead of assembling electronic components onto a textile after the fact, or laminating rigid chips onto fabric surfaces, the new approach builds functionality directly into the fibre itself. A single fibre can be turned into an integrated circuit, meaning that the basic building blocks of electronics, such as the ability to switch, amplify or process signals, reside within a thread that can be woven, knitted or stitched using conventional textile processes. The commentary accompanies a research paper by Wang and colleagues published in Nature, which reports the underlying fibre technology.

Why does this matter? Wearable electronics has made impressive progress over the past decade, from smartwatches to electronic skin patches, but most devices still rely on rigid silicon hardware mounted in rigid or semi-rigid packages. That architecture clashes with the fundamental nature of fabric, which is soft, stretchable, porous and constantly deforming as the body moves. The mismatch between hard electronics and soft textiles has limited the comfort, durability and washability of smart garments, and it has constrained the density of functionality that can be packed into a piece of clothing. Fibre-level integration attacks the problem at its root by making the electronic function and the textile substrate one and the same.

The microfluidic encoding strategy at the heart of the work offers a route to that integration. By using fluid-handling techniques to pattern and define structures along the length of a fibre, the method effectively writes information, and therefore function, into the fibre. The result, as characterized in the Nature Electronics commentary, is that individual fibres become active circuit elements rather than mere conductive pathways. This distinction is crucial. Conductive threads have existed for years, serving as wires and electrodes in experimental garments, but wires alone do not make a circuit. Logic, memory and signal conditioning require components with nonlinear electrical behaviour, and embedding such behaviour into a fibre has been a persistent materials and manufacturing challenge.

Scalability is the second pillar of the advance. Laboratory demonstrations of fibre electronics have often depended on slow, bespoke fabrication methods that cannot realistically produce the kilometres of fibre needed for commercial textile production. The commentary emphasizes that the microfluidic encoding approach provides a scalable route, suggesting that the technique is compatible with continuous or high-throughput processing. If fibre-based circuits can be manufactured with the same industrial maturity as conventional yarns, the gap between laboratory prototypes and market-ready smart textiles narrows considerably.

The implications extend across multiple fields. In health monitoring, garments woven from circuit-bearing fibres could continuously capture physiological signals such as heart activity, muscle activity or temperature without the electrodes, straps and rigid modules that current wearables demand. The commentary’s own authorship reflects this orientation: Zhu, Chow and Yu are affiliated with the Department of Biomedical Engineering at City University of Hong Kong, the Hong Kong Centre for Cerebro-Cardiovascular Health Engineering, and the Institute of Digital Medicine, institutions focused on translating flexible electronics into biomedical applications. Textiles that sense and compute invisibly within clothing could enable long-term, unobtrusive monitoring of cardiovascular and neurological health, an area where intermittent clinical measurements often miss important dynamics.

Deformability is another theme the commentary stresses. Practical textile electronics must survive repeated bending, stretching, twisting and laundering while maintaining electrical performance. Because the circuit function is distributed along the fibre rather than concentrated in a rigid chip, the resulting devices can in principle deform with the fabric, distributing mechanical stress across the textile structure. This is what the authors mean by deformable textile electronics: electronics whose mechanical properties match those of the woven or knitted structures they inhabit. The approach also opens possibilities in human-machine interfaces, soft robotics, distributed sensing networks and energy-harvesting fabrics, where conformal, textile-native electronics could replace bulky conventional hardware.

The Nature Electronics commentary situates the work within a broader research landscape. Its reference list points to earlier milestones in the field, including studies of fibre and textile electronics published in Nature Electronics in 2024, a review of fibre-based electronic materials in Nature Reviews Materials in 2023, and work on deformable electronic materials in Nature Materials the same year. Together, these references trace the trajectory of the field: from material innovations that made fibres conductive and semiconducting, through device architectures that brought transistor-like behaviour to fibre formats, to the current push for fully integrated, manufacturable circuit fibres. The new Nature paper by Wang and colleagues, and the companion Nature Electronics article by Sun and colleagues cited in the commentary, represent the latest stage in that progression.

Challenges, of course, remain, and the commentary’s framing makes clear that turning circuit fibres into everyday products will require continued engineering. Interfacing fibre circuits with power sources and communication modules, ensuring long-term reliability through washing and wear, achieving electrical performance comparable to conventional silicon devices, and integrating fibre electronics into existing textile supply chains are all nontrivial tasks. Electrical and electronic engineering and neuroscience, the two subject classifications Nature assigns to the commentary, hint at the breadth of the application space, from signal processing hardware to the neural and physiological signals such hardware might one day record and interpret.

Even so, the vision articulated by Zhu, Chow and Yu is compelling. If the microfluidic encoding strategy fulfils its promise, the fibre, humanity’s oldest technological platform, could become its newest computational substrate. Clothing that senses, computes and communicates would no longer require attaching electronics to fabric but would instead emerge from the fabric itself, thread by thread, woven on the same looms that have clothed civilizations for millennia. That convergence of textile craft and microelectronics, the commentary suggests, may be the key that finally moves wearable electronics from the gadget era into the garment era.

Subject of Research: Microfluidic encoding of individual fibres into active circuit elements for deformable textile electronics

Article Title: Weaving circuits into fibres

Article References: Zhu, W., Chow, L., & Yu, X. (2026). Weaving circuits into fibres. Nature Electronics. https://doi.org/10.1038/s41928-026-01710-4

Image Credits: AI Generated

DOI: 10.1038/s41928-026-01710-4

Keywords: wearable electronics, fibre electronics, textile circuits, microfluidic encoding, deformable electronics, Nature Electronics, smart fabrics, biomedical engineering, flexible electronics, health monitoring, City University of Hong Kong, integrated circuit fibre