Here’s what you’ll learn when you read this story:

• The non-linear Hall effect is a relatively new discovery, and researchers believe it could convert electrical currents directly into usable energy—no batteries needed.
• Recent research suggests that variables such as temperature weaken the effect, so scientists are experimenting with various remedies to make the process as reliable as possible.
• This could mean that we’ll eventually have self-powered sensors and chips, should researchers overcome the current obstacles.

Can we power electronics with current drawn straight from the environment?

A February 2026 study published in the journal Newton may put us along the path. Using quantum science that deals with fundamental particles, researchers uncovered a process that may allow electrical signals “to be converted directly into usable current without requiring… bulky components,” according to the paper. But the researchers say we shouldn’t be letting go of our batteries just yet.

The international research team was experimenting with bismuth telluride, a popular semiconductor for power generation. The substance is composed of bismuth—a metal used in cosmetics and some pharmaceuticals—and a rare element called tellurium, which is used to improve the quality of other metals.

The team put the bismuth telluride to the quantum test to study the non-linear Hall effect (NLHE). A Hall effect is a type of voltage generated across an electrical conductor, which is crosswise to the electrical current. An important application is whether the current is carried by negative or positive charges, which helps evaluate the performance of materials.

Hall effects have been known for a long time, but NLHE is relatively new to science. NLHE happens when two perpendicular currents drive voltage. Unlike the rest of the Hall effect family, the NLHE exhibits the same effects when moving forward and backwards in time—a phenomenon commonly referred to as “time-reversal symmetry.”

So what happens if you apply the NLHE to a semiconductor like bismuth telluride? As an early finding, the researchers suggest the process provides an “efficient, ultrafast method” for converting electrical currents. Not only that, but they also found that the process “can remain robust” at room temperature if “scattering-controlled mechanisms” are used, Xueyan Wang, PhD—a researcher on the study—explains in an email. In other words, impurities in the substances used in the experiment can affect the NLHE, so the researchers are finding remedies (such as controlling the temperature) to account for that.

Wang says the NLHE effect could eventually energize low-power electronics such as voltage detectors and high-frequency rectifiers, which are used to convert electrical current. “This is highly relevant for [everyday] applications,” Wang adds, because “realistic devices” must operate in a range of environments, subject to interference like the jiggling of atoms in response to sound waves.

Based on the research so far, NLHE “is much more realistically suited to small, self-powered chips than to grid-scale energy applications,” Wang cautions. It’s most apt for materials that are as thin as an atom, and built for the quantum world, for applications such as “intermittent sensing, memory, or lightweight computation.”

And even at that, “this promise should not be overstated” because performance can depend on the conditions, Wang adds. For instance, temperature changes may stifle the effect. “At present, reported NLHE signals are still relatively small in many material systems.”

So don’t expect NLHE to power the grid, as that requires large output, low cost, and high stability. “A more realistic outlook is that NLHE could become a useful enabling technology for distributed self-powered electronics and autonomous microsystems, rather than a replacement for batteries in general—or for conventional grid infrastructure,” Wang says. This means we could eventually have autonomous chips and sensors that draw energy directly from their environment.

Wang points to progress the field might make in the near future. The first question to answer would be how to reduce scattering of the effect—or NLHE becoming less effective—which, at least as far as the new research shows, may be influenced by temperature. The second is to make “further progress in materials and device engineering.” That’s because devices need to work at room temperature with more consistent output signals, which will require exceedingly more advanced materials to accomplish. Once that’s stabilized, Wang suggests moving beyond proof-of-principle demonstrations to actually trying to get NLHE to work on an integrated device.

“It would be too optimistic, at present, to say that NLHE could replace batteries, and even more so the grid,” Wang says. “A more realistic expectation is that NLHE may serve as a complementary technology for small, distributed, low-power systems. Any broader energy role remains a long-term and highly speculative possibility, rather than a near-term outcome supported by current evidence.”

So while we can’t toss our batteries based on the promise of NLHE, physicists are still excited because we’re uncovering more about how materials behave in the quantum world. And if we’re lucky, it will carve out a new way to save power in our energy-hungry future.