ProactiveIT tests reversible glue

ProactiveIT this week highlighted a new reversible conductive glue developed by researchers at Newcastle University, pointing to it as a repair-friendly alternative to some permanent electronics joints. The material is designed to join components like solder does, but to come apart later without destructive removal methods. That feature has drawn attention from repair and sustainability advocates because it could make disassembly, component recovery and rework easier. The underlying research was published on May 14 in *Advanced Electronic Materials*. ### What exactly did ProactiveIT point to? ProactiveIT linked to coverage of a Newcastle University project describing a water-based, electrically conductive adhesive that can be reversed after use. Newcastle researchers said the glue can join electronic components in place of some conventional permanent methods such as solder and screws. (interestingengineering.com) The paper is titled “An Electrically Conducting Water-based Reversible Adhesive,” and lists Bassam A. Aljohani, Ama B. Asiedu-Asante, Adriana Sierra-Romero, Katarina Novakovic, Volker Pickert and Mark Geoghegan as authors. The article record shows a May 14 publication date and DOI 10.1002/aelm.202500617. ### How is this glue supposed to work in practice? (interestingengineering.com) Newcastle University said the adhesive is electrically conductive because silver particles are added to the formulation, allowing it to connect electronic components much like solder. The university said the material is made in a process similar to paint manufacturing and described it as a “one-pot” water-based glue. (advanced.onlinelibrary.wiley.com) The key difference is reversibility. Researchers said a wash with acetone or an alkaline solution can separate bonded components for reuse or recycling, rather than forcing technicians to rely on heat or destructive removal. Phys.org, citing the university, said other conductive glues exist but “none can easily be debonded.” ### Why are researchers tying it to e-waste? (phys.org) Newcastle University said the project was aimed at the electronics waste problem, noting that 62 billion kilograms of e-waste are produced globally and that less than a quarter is recycled. The researchers said easier separation of components could help recover materials and reduce the need to discard assemblies that are difficult to take apart. (phys.org) Mark Geoghegan, the project’s lead investigator, said reversibility also matters because silver is costly and environmentally problematic if lost. “Being reversible, our glue means that the silver can be recovered and reused,” Interesting Engineering quoted him as saying. ### Does this mean solder is about to disappear? (phys.org) Interesting Engineering reported that standard lead-based solder still offers superior electrical conductivity, and the available material does not suggest the new adhesive is a full replacement across all electronics assembly. The reporting and university materials instead frame it as an alternative joining method that could be useful where disassembly, repair or material recovery matters. (interestingengineering.com) Bassam Aljohani, a Ph.D. student at Newcastle’s School of Engineering, said reversible conductive adhesives address “a very real problem that urgently needs addressing,” according to university-backed summaries of the work. ### Why would repair teams and procurement buyers care? Electronics repair operations and IT buyers typically care about whether a device can be reopened, reworked and returned to service without damaging surrounding parts. (interestingengineering.com) The Newcastle work is relevant to that discussion because it describes a joining method intended to hold during use, including in humid environments, while still allowing later disassembly. (phys.org) For depot repair teams, that could matter in boards, modules or subassemblies where destructive removal adds labor, scrap or replacement cost. The next public reference point is the research paper itself, published May 14 in *Advanced Electronic Materials*, and the university said the work was funded by the Engineering and Physical Sciences Research Council and a Ph.D. scholarship from the Royal Commission for Jubail and Yanbu. (advanced.onlinelibrary.wiley.com) (phys.org)