Rahul Somvanshi
In a laboratory at the University of Vienna, researchers discovered they can deliberately control whether tiny holes in a one-atom-thick material form circles or triangles. This might sound like abstract laboratory manipulation. But the applications—DNA sequencing, molecular filtration, quantum technologies—represent genuine technical advance.
The material is called hexagonal boron nitride, or h-BN. It's sometimes called "white graphene" because its structure resembles graphene, but with different properties. While graphene conducts electricity, h-BN insulates. While graphene is famous, h-BN is overlooked. But for certain applications, that insulating property is exactly what's needed.
The research, published in Nature Communications in August 2026, addressed a question that had remained unresolved for nearly two decades. Scientists have observed both circular and triangular nanopores forming in h-BN during electron microscopy experiments since the early 2000s. Nobody understood why or how to control it. The Vienna team figured out both.
Their discovery: electron beams in ultra-high vacuum create circular nanopores. But add trace oxygen gas, and the same electron beams create triangular pores instead. The difference comes down to chemistry. In pure vacuum, electrons knock atoms away from the lattice. In oxygen's presence, oxygen molecules chemically etch the material, attacking it from different angles. The result is different geometry.
This matters because nanopore geometry can influence behavior in various applications. Circular versus triangular apertures have different properties for filtering molecules or detecting particles. The ability to choose geometry intentionally, rather than hoping for triangular shapes and accepting circular ones when they form, represents technical progress.
DNA sequencing is one identified application area. The concept is simple: feed a DNA strand through a nanopore. As different bases pass through, they alter the electrical current differently. Read the pattern of current changes, and you read the genetic sequence. Oxford Nanopore Technologies built a commercial business on this principle using protein nanopores. Using engineered solid-state h-BN nanopores might eventually offer advantages—but that remains to be demonstrated.
The expanded applications researchers identified—molecular filtration, catalysis, quantum sensing—are longer-term possibilities. Filtration could eventually address water purification or medical diagnostics. Catalysis could enable novel chemistry. Quantum sensing could detect extremely weak signals. None of these are immediate commercial products. They represent what becomes possible once the material can be engineered precisely.
The development timeline typically takes years. Academic papers rarely become market products overnight. The University of Vienna researchers published their work in August 2026. Similar nanotechnology innovations from a decade ago are only now reaching commercial maturity. That suggests nanopore applications remain years away.
The research represents the kind of fundamental science that attracts little public attention but that eventually transforms technology. When fundamental research solves a problem that blocked progress for decades, it opens possibilities previously impossible. The Vienna team didn't invent anything new; they explained a phenomenon and demonstrated control. But that explanation and control unlock applications waiting for this precise capability. The Janus cloak technology demonstrates similar materials science breakthroughs in engineering novel material properties.
