Touchscreen Technology Gets a Manicure: New Polish Could Allow Fingernails to Operate Devices
A new prototype nail polish is offering a potential solution for those who struggle to leverage touchscreens with long nails or calloused fingertips. Developed by Manasi Desai, an undergraduate student at Centenary College of Louisiana, and her research supervisor, Joshua Lawrence, an associate professor of chemistry at Centenary, the polish aims to develop fingernails as functional as fingertips on touch-sensitive devices.
The challenge with current touchscreen technology lies in its reliance on conductivity. Most touchscreens are made of glass coated with an electrically conductive material. When a conductive object, like a fingertip, makes contact, it disrupts the screen’s electric field, registering a touch. Nonconductive materials, such as fingernails or gloves, typically don’t register.
How the New Polish Works
Desai and Lawrence’s innovative approach bypasses the conductivity issue through acid-base chemistry. Their research, presented at the annual meeting of the American Chemical Society on March 23, 2026, focuses on a clear, nontoxic polish containing the amino acid taurine and the organic molecule ethanolamine. When combined, these additives create a formula that mimics the conductive properties of skin by facilitating proton exchange.
“We suppose that the materials we are producing are working via protons hopping from acidic to basic groups,” Lawrence explained in an email to Live Science. “We think we have proton exchange between acidic and basic groups at the surface of the polish, fulfilling the same role as ion mobility in skin.”
Addressing a Real-World Problem
The inspiration for this project stemmed from observing the difficulties faced by individuals with long nails, such as a phlebotomist Desai spoke with. “After the researchers asked a phlebotomist with long nails who was struggling to operate a smartphone whether touch-screen-compatible nail polish would be useful — and got a resounding ‘Yes’ answer — they set out to develop a new product,” according to Live Science.
This isn’t the first attempt to create a touchscreen-compatible polish. Previous efforts relied on incorporating conductive materials like carbon nanotubes or metallic particles, but these posed toxicity concerns and limited color options. Desai’s formulation avoids these drawbacks.
Current Limitations and Future Development
While the prototype shows promise, it’s not yet ready for commercialization. A key challenge is the polish’s limited lifespan. “All our formulations lose efficacy too quickly,” Lawrence stated. “They stop working after hours or days, and we want them to work for days or weeks, minimum.”
The researchers are currently working to refine the formula, improve its durability, and ensure its complete nontoxicity. They have filed a provisional patent for their invention and continue to explore optimal ingredient combinations. Currently, the least-toxic formulation results in a textured finish that isn’t ideal for cosmetic purposes.
“Chemists are here to solve problems and to endeavor to make your world better,” Lawrence said.