Roger McWilliams
With his bow ties and seersucker suits, Roger McWilliams might seem old-fashioned, but the UCI physicist invents futuristic laser tools that have advanced everything from telecommunications to healthcare. Steve Zylius / UCI

UC Irvine physics & astronomy professor Roger
McWilliams often appears to have stepped out of a time machine — from
the past. He rides to work on a reproduction vintage bicycle with a
wide leather seat and big chrome handlebars. When he does drive a car,
it’s a 60-year-old Jaguar that he fixes himself with his collection of
antique tools.

In May, when the UCI Alumni Association presented McWilliams with its
Lauds & Laurels
faculty achievement award, he showed up in his trademark bow tie and a
seersucker suit. “Bow ties are just one of the things I like, and I
don’t mind if they fit in or not,” he says.

At the Anthill Pub & Grille, where he frequently plays the saxophone with other faculty members in the
Interactions Jazz Ensemble,
McWilliams looks more like a character from “The Music Man” than a university professor.

while he strikes many as old-fashioned, he creates laser-based devices
like something out of the future. Many of them generate plasma —
“matter so hot it’s ionized” and the subject of his 30-year career at
UCI. McWilliams has a bow tie depicting a prime example of plasma: the

“Since much of the known matter in the universe is plasma, there’s
more than enough to spend decades studying,” he says. “I’m always
looking for new ways of doing things with plasma.”

they sound like the stuff of sci-fi, his devices have practical uses in
healthcare, telecommunications and other fields. “The invention of new
tools often leads to new physics. I focus on those that have social
utility,” he says. “In science, it’s nice to contribute to an area that
helps other people.”

Dr. Roger Steinert,
an ophthalmologist at UC Irvine Medical Center, says McWilliams has
helped develop the instruments for his pioneering advances in laser eye

“Lasers that create plasma now are workhorses in treating eye
disorders. They can act like a clean scalpel, generating minimal heat
or collateral damage, while reaching inside the eye with no incision,”
Steinert says. “His work has greatly affected my own for nearly three

plasmas and lasers range in diameter from one-tenth of a human hair to
the fuselage of a 747. “Here’s an electrosurgery tool for taking
tonsils out,” he says, showing off a handheld device that looks like a
fountain pen. “Instead of a knife, it’s a plasma blade about the
thickness of a human hair. A surgeon can cut and cauterize at the same
time. It helps with healing.”

He works in a lab similar to Doc’s garage in “Back to the Future,”
filling the basement of Frederick Reines Hall with a hodgepodge of old
office furniture, books, occasional car parts, bikes, pumps, fans,
coils and other equipment. All that’s missing is a time-traveling flux

“People find me quirky — I don’t know why,” McWilliams says. “Maybe it’s because my interests cross many borders.”

Indeed, although he’s a scientist (getting a bachelor’s in physical
sciences from UCI in 1975, then earning a doctorate in plasma physics
at Princeton University in 1980), he taught in UCI’s Humanities Core Course
for four years and peppers his conversation with references to everyone
from Plath to Proust. It’s the rare scientist who keeps the entire
Oxford English Dictionary in his lab, where he greets students from a
vintage desk piled high with papers, journals — and a spare car

McWilliams, the founder and former director of the
Campuswide Honors Program
and founder of the
Undergraduate Research Opportunities Program,
isn’t much more orthodox in class: He encourages students to step away
from their textbooks and experiment on their own. His exams are

One called for test-takers to tear off the bottom of the exam paper,
blow on the strip’s edge and calculate the oscillation. And it wasn’t
hard to tell when students reached this challenge: “Stand up and
estimate the spring constant of your shoes reacting to your standing

should have relevance to real life,” McWilliams says. “It’s not some
fuzzy-haired guy in a bow tie standing at a podium in a windowless

translate his own research into products and services with “social
utility,” he’s collaborated with national labs and businesses, working
with former students who’ve gone on to places like TowerJazz (formerly
Jazz Semiconductor) and Broadcom. He’s also helped companies develop
lasers that boost Internet signals carried by transoceanic fiber-optic

“Physics is about the world we live in,” McWilliams says, “and making it a better place.”