Even though it is the eleventh anniversary of 9/11, I
thought I’d look ahead instead of looking behind. I would rather tell you about a really
interesting young man, a man who was born and raised in New York City.
Michael
Lefenfeld invented a critical medical diagnostic device when he was only 19! He
invented a sensor that became a model for most pulse oximeters. It’s the clip that is placed on the finger to detect
oxygenation levels in the blood. Each time
you are evaluated in the doctor’s office or the hospital, it is clipped on your
finger and a light shoots through your fingertip as it measures pulse and
oxygen levels.
Now, he didn’t just wake up one morning with the prototype
in his mind. After high school, Michael
attended Washington University in St. Louis with a medical research
scholarship. Unfortunately, he hated
doing research. A friend was a chemical
engineering major and Michael liked what his friend was doing. He changed his major and changed
direction. Armed with what he had
already learned with his medical research and applying his new classes, he came
up with the prototype for the pulse oximeter and a few other products.
When he finished at Washington University, he worked for a
couple of chemical companies before going back to school to get his Master’s
degree in Chemistry at Columbia University.
It was probably about this time that a conversation with his grandpa
sparked another innovative product that may change the world!
His grandpa wanted an air freshener that one could drop in
the toilet to mask unpleasant bathroom smells.
Michael thought long and hard about what might work well there. He wanted something that would carry a
fragrant oil and react with the water to generate heat and gas to disperse the
fragrance into the room. From his freshman
chemistry classes, Michael remembered that sodium (Na) is highly reactive with
water, resulting in a violent burst of flames.
If he could somehow control the sodium and add fragrance, he’d have
another useful product and help his grandpa out.
The trick was to create a sodium formulation with just
enough sodium to react with the water and not cause flames, but disperse the
fragrant oil. He called an expert for
help—a chemist named James L. Dye. James
knew how to melt sodium and mix it with a silica gel. That produced a sand-like powder that did
exactly what Michael’s grandpa wanted. Michael
admitted, “it made the bathroom smell really really nice.”
James and Michael realized that they had tamed the reactivity
of sodium! Not only in water, but also
in the air (which contains water vapor.)
This technology could be applied to other reactive metals and opens up a
world of uses for these metals. Michael
and James immediately formed a company they named ‘SiGNa.’ The name is based on the chemical symbols of
silicon (Si) and sodium (Na), with the G from ‘gel.’ They now create products that do essentially
the same thing as their air freshener tablets, but with much more important
uses. They push the last drops of oil
from oil wells, they destroy hazardous organic pollutants, and they catalyze
reactions to make pharmaceutical drugs.
Michael sees a bigger use that they are still perfecting: energy cells.
Silicon and water give off hydrogen gas, which can be used as a power
source. Many fuel cells or batteries use
hydrogen gas to generate electricity. Michael
and James made another powder of silicon and a gel that reacts with water or any
liquid. They think it will be able to
power small things like mobile phones or big things like lawn mowers. They have started marketing ‘Power Pukks’ as
cell phone chargers in Sweden.
Like sodium in water, Michael’s success has been explosive. At age 25 when he formed SiGNa, he had 6
employees; today he is only 31 and has 65 employees. First his idea for the pulse oximeter got
Michael started. Then he tried to help
his grandfather deal with odors. His
solution to such a ‘little problem’ became a huge solution to many
problems!
We don’t have to be old and gray to make a difference in the
world. Sometimes doing a little thing
can make a big difference, at least to the person you helped.
Sources:
Boudway, Ira. “Innovator
Michael Lefenfeld’s Offbeat Power Play.”
Bloomberg Businessweek 3 March 2011:n. pag. web.
“Michael Lefenfeld, SiGNa Chemistry.” 30
Under 30: America’s Coolest Young
Entrepeneurs Inc.com. 2008:n. pg. web.
Ritter, Steve. “Entrepeneurs: Michael Lefenfeld.” Chemical
and Engineering News 20 Aug 2012:43.
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