{ "story_id": "502576072b541063afe34bdadd3dcfd7", "desk": "drm3", "revision": 1, "published_at": "2026-09-02T14:20:01.000Z", "content_hash": "8cfd3c7325acfad0feae599092252555ea6973c62af389166cfa20d3ad75af74", "hash_basis": "sha256 over `headline\\ndek\\nprose`, plus `\\n` + the canonical citations JSON when any source is placed, plus `\\n#blog` for blogs", "basis": { "headline": "New Optical Sensors Enable Noninvasive Monitoring of 3D-Printed Tissue", "dek": "Researchers developed optical sensor particles to noninvasively monitor nutrient levels and cell health in bioprinted structures.", "prose": "Researchers at Texas A&M University developed a method to embed microscopic phosphorescent sensor particles into 3D-printed biocompatible materials to monitor cell health noninvasively. [^1]\n\nVirginia Tech chemists John Matson and Josh Worch and their teams are developing extra-sticky adhesives that can be broken down into their original components once they are no longer needed. [^2]\n\nDr. Michael McShane, professor of biomedical engineering and department head at Texas A&M, explained that the new sensor particles allow light transmission through tissue to monitor internal conditions without physical penetration. [^3]\n\nDr. Waqas Saleem, a researcher at the Texas A&M University Department of Biomedical Engineering, stated that current technologies for monitoring cell health are limited, bulky, and invasive. [^4]\n\nThe sensor particles are phosphorescent and absorb light from an inexpensive red LED, emitting modified light that indicates oxygen levels which correlate to nutrient levels like glucose and lactate. [^5]\n\nClark Vu and Isaac Addo from the Matson lab developed a bottlebrush polymer adhesive that is four times stronger than the commercial adhesives used in duct tape. [^6]\n\nGraduate researcher Regina Ham found that using lipoic acid to create extremely large, inherently tacky polymers produced an adhesive compound that outperforms heavy-duty duct tape in adhesion strength while remaining chemically recyclable. [^7]\n\nJosh Worch, assistant professor of chemistry at Virginia Tech, stated that his lab developed a tape with adhesive and plastic backing layers that can be recycled together as a mono-material design. 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