Pushing the Limits of Precision: UP Scientists Unveil Breakthrough Insights into Thin Film Deposition Using Femtosecond Lasers

Wazzup Pilipinas!?

In the intricate dance of atoms and light, a daring team of Filipino scientists from the University of the Philippines is challenging decades-old assumptions about how we build the future—one ultra-thin layer at a time.

In the world of materials science, the tiniest differences can mean the largest consequences. This truth drives a new and dramatic breakthrough from the University of the Philippines – Diliman College of Science (UPD-CS), where a group of visionary researchers has taken on one of modern physics’ most delicate puzzles: the precise creation of thin films used in next-generation electronics, superconductors, and energy systems.

But rather than following the well-worn path paved by traditional high-energy nanosecond pulsed laser methods, these scientists dared to ask: What happens when we turn the energy down, and the precision up?

Led by Joy Kristelle De Mata and Dr. Lean Dasallas of the Materials Science and Engineering Program (MSEP), with support from Dr. Roland Sarmago and Dr. Wilson Garcia of the National Institute of Physics (NIP), the team focused their attention on the high-temperature superconductor BSCCO—bismuth strontium calcium copper oxide—a material revered for its power and potential in critical technologies like power grids, magnetic resonance imaging, and high-efficiency electronics.

But the question was not if BSCCO could be deposited into thin films, but how—and whether a gentler touch, using low-energy femtosecond pulsed lasers, could preserve the material’s complex structure without compromise.

Challenging the Known: When Less Energy Reveals More Complexity

“Maintaining the correct stoichiometric ratio of elements in a film is paramount,” explained De Mata. “Even slight deviations can drastically affect its superconducting properties.”

This was the crux of their study: using femtosecond lasers with nanojoule-level pulses to carefully deposit layers of BSCCO, atom by atom, while battling the constant threat of imbalance. Unlike traditional nanosecond lasers, which come in blazing with high energy and brute force, femtosecond lasers offer pinpoint precision, operating in quadrillionths of a second. It’s like using a scalpel instead of a hammer.

Their journey, however, was far from simple.

They discovered that when low-energy fs-PLD (femtosecond pulsed laser deposition) is conducted in high-pressure environments, the resulting thin films often stray from the original material’s composition. This unexpected outcome defied what most current computational models would predict, exposing a hidden complexity in the deposition process.

“The existing models just couldn’t explain what we were seeing,” De Mata revealed. “It means the physics at play in fs-PLD is far more nuanced than we believed.”

A New Frontier in Materials Engineering

The implications of these findings ripple across industries that rely on ultra-thin, highly precise films—from microchips and memory storage to medical imaging and quantum computing. But even with its promise, fs-PLD isn’t ready to replace its higher-energy cousin just yet.

“The low energy of fs-PLD means the process is slower, and that’s a challenge for scaling up,” De Mata admitted. “There’s also the issue of consistency. The deviation in film composition limits its industrial reliability—for now.”

Still, for researchers seeking perfection rather than mass production, fs-PLD remains a shining tool. The team is already planning to delve deeper, exploring how temperature and substrate conditions affect film growth, with the ultimate goal of developing new predictive models that match the reality of femtosecond-scale deposition.

Science with a Soul: The Spirit of Filipino Ingenuity

This study is more than just physics—it’s a testament to Filipino brilliance in global science. At a time when developing nations are often seen as consumers rather than creators of cutting-edge tech, the UPD-CS team is proving that innovation has no borders.

By embracing the unknown and refining the ultrafine, they are not only reshaping what we know about lasers and materials—they are redefining what is possible.

As the scientific world watches closely, one thing is clear: from the heart of the Philippines, a quieter, more precise revolution in technology is taking shape—one femtosecond at a time.

With inputs from the University of the Philippines – Diliman College of Science

Photo courtesy of Joy Kristelle De Mata

About "WazzupPilipinas.com"

WazzupPilipinas.com is the fastest growing and most awarded blog and social media community that has transcended beyond online media. It has successfully collaborated with all forms of media namely print, radio and television making it the most diverse multimedia organization. The numerous collaborations with hundreds of brands and organizations as online media partner and brand ambassador makes WazzupPilipinas.com a truly successful advocate of everything about the Philippines, and even more since its support extends further to even international organizations including startups and SMEs that have made our country their second home.