About State Key Laboratory of Bioelectronics

State Key Laboratory of Bioelectronics

The State Key Laboratory of Bioelectronics at Southeast University in Nanjing, Jiangsu, is China's national laboratory for the science where electronics meets living systems. Bioelectronics studies how electronic devices can sense, stimulate and communicate with biological material — the biosensors that detect a virus or a cancer marker from a drop of fluid, the neural interfaces that record from or stimulate the nervous system, the signal-processing methods that turn faint physiological signals into diagnoses, and the molecular diagnostics that identify disease from nucleic acids. At Nanjing, this field has an unusually long and traceable lineage: the laboratory grew, step by step over two decades, from one of China's earliest biomedical-engineering programmes, founded in 1984, through a pioneering molecular electronics laboratory named for the physicist Chien-Shiung Wu, to national key laboratory status in 2005. Its applied power was demonstrated to the whole country during the COVID-19 pandemic, when nucleic-acid extraction technology developed in the laboratory cut the sample preparation time for coronavirus testing to about eighteen minutes and was deployed nationally.

Foundations: Wei Yu and the department of 1984

The laboratory's institutional history, as recorded in the timeline of Southeast University's biomedical engineering school, begins in October 1984, when the academician Wei Yu established the Department of Biomedical Engineering and Instruments. That founding matters because bioelectronics at Southeast University did not begin as an imported label: it began as an engineering programme concerned from the start with instruments — with building devices that measure living systems. Wei Yu's department created the teaching and research base from which the laboratory would grow, training the first generations of Chinese biomedical engineers in Nanjing and establishing the electronics-and-medicine combination that still defines the laboratory's identity. The university itself, based in Nanjing — a historic capital and one of China's densest concentrations of universities and research institutes — gave the young department access to hospitals, to the electronics industry of the Yangtze Delta and to the national research programmes then beginning to fund interdisciplinary science.

The Wu Jianxiong Laboratory and the molecular turn

In 1985, one year after the department's founding, a Molecular and Biomolecular Electronics Laboratory was established within it — the direct ancestor of the present state key laboratory. In 1992 that laboratory was named the Wu Jianxiong Laboratory, honouring Chien-Shiung Wu (Wu Jianxiong in Chinese), the Chinese-American experimental physicist famed for the Wu experiment that overturned parity conservation and for her exacting standards of experimental physics. The naming connected the young Nanjing laboratory to one of the most distinguished names in twentieth-century science, and the laboratory carried the Wu Jianxiong name through its next stages: in 1999 the Wu Jianxiong Laboratory was upgraded to a Key Laboratory of the Ministry of Education in molecular and biomolecular electronics. The research record for this profile adds a further distinction from the same period: China's first bioelectronics doctoral programme was authorised in 1993, making Southeast University the first place in China where a doctorate could be taken in bioelectronics as such. In 1994 bioelectronics was rated a key discipline in Jiangsu Province, and in 2002 biomedical engineering at the university was rated a national key discipline. Step by step — department, laboratory, honorific naming, doctoral programme, ministerial key laboratory — the Nanjing group accumulated the credentials that a national key laboratory requires.

National key laboratory status in 2005

In 2005 the National Key Bioelectronics Laboratory — the State Key Laboratory of Bioelectronics — was established under approval, completing the twenty-year progression from departmental laboratory to national platform. The same period brought further institutional growth around it: the Jiangsu Key Laboratory for Biomaterials and Devices had been established under approval in 2004, biomedical engineering at Southeast became one of the first brand specialties in Jiangsu Province in 2005, and in August 2006 the university established the School of Biological Science and Medical Engineering, giving the laboratory a school-level home that combined biological science with medical engineering. In 2011 the school set up three departments — biomedical engineering, information and systems biology, and medical and biological physics — a structure that mirrors the laboratory's own spread across devices, data and fundamental biophysics. Southeast University's biomedical engineering discipline, which the laboratory anchors, has repeatedly been ranked first, with an A+ grade, in national discipline evaluations, according to the research record for this profile — a standing that reflects both the laboratory's research output and its role in training the discipline's researchers.

What bioelectronics means at Nanjing: biosensors and molecular diagnostics

The laboratory works at the interface of electronics and living systems, and its core technologies follow from that definition. Biosensors — devices that couple a biological recognition element, such as an enzyme, antibody or nucleic-acid probe, to an electronic transducer — are a signature strength, turning a molecular binding event into a measurable electrical or optical signal. Molecular diagnostics extends the same idea to the identification of disease from DNA and RNA: extracting nucleic acids from a clinical sample, amplifying them and detecting specific sequences. The laboratory's researchers work across the chain from materials to devices, including the functional nanomaterials whose discovery and application won recognition in the university's record — the school timeline notes that at the end of 2012 a project on discovering and applying several functions of nanomaterials won the Second National Prize for Natural Sciences, and in the same year the group obtained the title of innovative team of the Ministry of Education. Nanomaterials matter to bioelectronics because their surfaces can be engineered to bind biological molecules selectively and to amplify the signals those molecules produce, improving the sensitivity of sensors and the speed of diagnostic devices alike.

Neural interfaces and biomedical signal processing

A second major direction is the electronic interface with the nervous system and the processing of biomedical signals. Neural interfaces record electrical activity from nerves and brain or deliver stimulation back to them, and they demand exactly the laboratory's combination of microelectronics, materials that the body tolerates and algorithms that extract meaning from noisy signals. Biomedical signal processing — the mathematical and computational treatment of signals such as electrocardiograms, electroencephalograms and other physiological recordings — supplies the interpretive layer for such devices, separating clinically meaningful patterns from artefact and noise. Together with biosensing and molecular diagnostics, these directions give the laboratory a coherent identity: it is concerned with every stage at which information passes between a living system and an electronic one, whether the signal is a molecule binding to a sensor surface, a nucleic-acid sequence being prepared for a test, or a waveform recorded from the body. That coherence is the intellectual legacy of the laboratory's origins in an instruments department: the device, the material and the algorithm are developed together, by researchers trained across the boundaries between engineering, biology and medicine.

Eighteen minutes: the laboratory and COVID-19 testing

The laboratory's most publicly visible achievement came in the first months of the COVID-19 pandemic. Molecular diagnosis of the new coronavirus depended on extracting viral RNA from patient samples before it could be amplified and detected, and that extraction step was a bottleneck: slow, manual and dependent on imported kits. A nucleic-acid extraction kit developed from Professor He Nongyue's patent-transfer result — an all-temperature microvolume mixing incubation system — at the State Key Laboratory of Bioelectronics provided the sample-pretreatment tool for COVID-19 molecular diagnosis, reducing the extraction and purification step to about eighteen minutes. Southeast University's own reporting in March 2020 described the kit as a powerful tool for detecting COVID-19 that, upon mass production, was applied in the national testing effort. The episode illustrates the laboratory's model of impact: a piece of fundamental device research — how to mix and incubate microvolumes of fluid at controlled temperature so that nucleic acids can be captured efficiently — became, through patent transfer and industrial production, a component of a national public-health response. It also validated the laboratory's long investment in molecular diagnostics, a direction that might have seemed specialised before 2020 and was, within months, among the most consequential technologies in the world.

People, training and the school ecosystem

The laboratory operates inside the School of Biological Science and Medical Engineering at Southeast University, whose development it has driven and whose milestones mark its own history: the BGI-SEU National Engineering Practice Education Center established in November 2012 linked the school to one of China's largest genomics organisations for practical training, and the school's departments supply the laboratory with researchers and students across engineering, systems biology and biophysics. The doctoral programme authorised in 1993 as China's first in bioelectronics, together with the discipline's repeated A+ evaluations, makes the laboratory a national training centre for the field: many of China's bioelectronics researchers have passed through Nanjing as students or collaborators. The laboratory's honorific naming also continues to shape its culture — to work in a laboratory named for Chien-Shiung Wu is to work under the example of an experimentalist renowned for rigour, a standard the laboratory's timeline of national prizes, ministerial team honours and discipline rankings suggests its researchers take seriously.

Place in Chinese biomedical engineering

Four decades after Wei Yu founded its parent department, the State Key Laboratory of Bioelectronics remains the national reference point for its field in China: the laboratory that defined bioelectronics as a doctoral discipline in the country, carried the field from molecular electronics in the 1980s to national key status in 2005, and showed during a pandemic that its devices could perform at national scale. Its research directions — biosensors, neural interfaces, biomedical signal processing and molecular diagnostics — map closely onto the technologies now reshaping medicine worldwide, from rapid point-of-care testing to implantable and wearable devices. Based in Nanjing and anchored in a discipline repeatedly evaluated as the best in China, the laboratory's significance lies in that continuity: a single institution, traceable through an unbroken sequence of dated milestones from 1984 to the present, in which each generation of researchers has inherited the previous generation's instruments, questions and standards, and extended them toward the living systems that bioelectronics exists to measure.