Devices

Two laser-induced graphene devices from Lu Yi's group at SIAT and SIBS: a stretchable BiL-LIG wearable sensor and an IntE-LIG neural electrode array with a conductive polymer-gold coating, 1 kHz impedance down 98.5%, 4 weeks of macaque and 12 weeks of mouse recording, with a mouse seizure closed loop.

Catalog specification sheet - Cortical surface

SIAT laser-induced graphene multimodal physiological-electrophysiological electrodes

Primary source →

Record ID
BTSD-ACAD-0102
Reviewed
2026-10-09
Interface
ecog
Evidence stage
preclinical

Independent, source-linked catalog sheet. Not a manufacturer-issued datasheet, regulatory decision or instructions for clinical use. Human evidence does not establish approval. Source-specific restrictions, conflicts and missing specifications are retained below.

SIAT laser-induced graphene multimodal electrodes

Two complementary devices made by laser-writing graphene into a flexible substrate, from Lu Yi’s group at the Institute of Brain Cognition and Brain Disorders, Shenzhen Institute of Advanced Technology (SIAT, CAS), with the Shenzhen-Hong Kong Institute of Brain Science (SIBS). Paper: “Laser-Induced Graphene Bioelectronics for Flexible Multimodal Physiological-Electrophysiological Monitoring”, Advanced Functional Materials, 2026. The source is SIBS’s Chinese release of 5 May 2026. The paper text and DOI were not reached, so geometry, substrate, laser settings and coating thickness are blank.

Identity

FieldValue and source scope
DevicesBiL-LIG sensor (double-sided laser-induced graphene) and IntE-LIG electrode (interface-engineered LIG) [1]
OriginSIAT Institute of Brain Cognition and Brain Disorders / SIBS, Lu Yi lab [1]
Combined systemPhysiological-electrophysiological monitoring system (PEMS) [1]
SpeciesHuman volunteers, macaque, mouse [1]
Regulatory statusResearch devices; no clinical implant reported [1]

Geometry and architecture

FieldValue and source scope
BiL-LIGStretchable wearable strain-type sensor for heartbeat, respiration and limb movement; on mice it sits on the chest and abdomen without implantation [1]
IntE-LIGFabricated as a flexible neural electrode array for in vivo recording [1]
Channel count, pitch, thickness

Materials and fabrication

FieldValue and source scope
Base materialLaser-induced graphene, patterned by tuned laser processing parameters [1]
Interface engineeringMulti-step process depositing a conductive polymer and gold composite coating on the LIG [1]
Laser parameters, substrate

Performance envelope

FieldValue and source scope
ImpedanceIntE-LIG impedance at 1 kHz reduced by 98.5% with the coating; absolute value blank [1]
Recording durationAt least 4 weeks stable electrophysiology in macaque; 12 weeks in mouse [1]
Wearable sensingRadial pulse wave in humans from rest to high-intensity exercise; heart and respiration rate in anesthetized macaque and in mouse [1]
Closed loopMouse acute seizure model: cortical LFP and heart rate recorded together; when both pass thresholds a micro-injection pump delivers lamotrigine and both return to baseline [1]

Limits

Concept proof in an acute mouse seizure model only. Recording stability is reported as durations, with no yield or signal-to-noise figures in the release. The group’s earlier electrode work is listed in the release but not described here.

References

  1. Shenzhen-Hong Kong Institute of Brain Science (Chinese), Advanced Functional Materials | 鲁艺团队研发激光诱导石墨烯生物电子器件, 5 May 2026.