Researchers at the University of California, San Diego Sanford Stem Cell Institute have developed a groundbreaking Graphene-Mediated Optical Stimulation (GraMOS) technique that uses graphene's optoelectronic properties to accelerate the maturation of human brain organoids. This non-genetic, biocompatible method improves neuronal connectivity and network function without altering genetic code or resorting to invasive electrical methods. The accelerated organoid maturation is poised to enhance research into age-related neurological diseases such as Alzheimer's, with potential applications in brain-machine interfaces and biohybrid robotics. The work is published in Nature Communications and demonstrates functional differences in network activity in Alzheimer's patient-derived models under this stimulation.