Most of a semiconductor wafer becomes dust before it ever becomes a chip. Arno Merkle built a company on a refusal to accept that. At Crystal Sonic, sound does the cutting - and the expensive crystal underneath gets to live again.
There is a number inside the semiconductor industry that nobody likes to say out loud. When a factory turns a block of crystal into wafers - the thin discs that become chips - the conventional tools, wire saws and grinders, destroy more than ninety percent of the material. The good stuff, the pristine and astonishingly expensive crystal, leaves the building as slurry and dust. Arno Merkle looked at that number and decided it was not a law of nature. It was just a bad habit.
Crystal Sonic, the Phoenix deep tech company he co-founded and now runs as CEO, replaces the saw with sound. Its patented Sonic Lift-Off technology applies a precise force to start a tiny crack in the substrate, then uses sound waves to steer that crack cleanly through the crystal. A thin device layer - the part that becomes a solar cell or a power-electronics chip - peels away. And the substrate beneath it survives, intact, ready to be used again.
The press has a nice phrase for it: an acoustic scalpel. It is a good metaphor because a scalpel is about restraint. You are not hacking the material apart. You are persuading it to separate exactly where you want, and nowhere else.
"The harnessing of acoustic energy promises to enable substrate re-use during the production of wide bandgap power electronics."
- Arno MerkleWire sawing and backgrinding turn most of a wafer into waste. Sonic Lift-Off is built to recover it.
No saw. No slurry. The trick is to make a single crack and then control it with acoustic energy until the layer lifts free.
A precise application of force opens a small fracture at the edge of the substrate.
Sound waves guide the crack deeper, on a chosen plane, for a clean cut through the crystal.
A thin device layer separates - the future solar cell or power chip.
The remaining substrate goes back into production instead of into the bin.
Wide bandgap substrates - silicon carbide and gallium nitride - are some of the priciest materials in electronics. Cutting them the traditional way throws most of that value away. Reuse changes the math.
Where he led product and business development. Acquired by Carl Zeiss in 2013.
His second exit in advanced microscopy instrumentation. Acquired by Tescan in 2018.
Electron, ion and X-ray microscopy - the tools that let people see inside materials.
Before Crystal Sonic, Merkle spent his career in capital equipment, building and selling the instruments that let scientists peer inside matter. He held leadership roles at Carl Zeiss, Tescan, Xradia and XRE, and steered two startups to acquisition. Along the way he authored more than 75 technical papers and became a patent holder.
There is a neat symmetry to the career. He spent the first half learning to see inside materials at the finest scales. He is spending the second half taking them apart with surgical precision. The microscope taught him where the flaws and fault lines live. The acoustic scalpel acts on them.
Earns a B.S. in Physics from Gustavus Adolphus College.
Completes a Ph.D. in Materials Science and Engineering at Northwestern University.
Xradia, where he led product and business development, is acquired by Carl Zeiss.
XRE is acquired by Tescan - his second startup exit.
Crystal Sonic wins an NSF SBIR Phase I award for Sonic Lift-Off aimed at lower-cost wide bandgap devices.
First place and $25,000 at the Natcast Startup Pitch; a $250,000 investment at the Lam Capital Venture Competition.
Presents "Next Gen Semiconductors: Pioneering the Future with Chips" at Venture Cafe Phoenix.
"Winning the pitch competition at the NSTC Symposium is an incredible honor for Crystal Sonic. It validates the industry demand to lower cost and reduce waste for next-generation semiconductors toward sustainable manufacturing."
- Arno Merkle, on the 2024 Natcast winCrystal Sonic began with borrowed space. Arizona State University handed the founding team lab room for their earliest testing - the kind of quiet, unglamorous support that lets an idea survive long enough to become a company. From there the team moved to Connect Labs by Wexford in downtown Phoenix, settling into Arizona's fast-growing semiconductor cluster, the so-called Silicon Desert.
Merkle co-founded the company with Mariana Bertoni, an ASU electrical engineering professor who serves as CTO and directs the university's DEfECT Lab. The pairing is telling: a serial operator who knows how to take a product to market, alongside an academic who understands the physics of defects in crystals. Sonic Lift-Off lives exactly at that seam.
The market it aims at is enormous and growing - power electronics for electric vehicles, 5G infrastructure, satellite communications, LEDs and RF amplifiers. All of them lean on wide bandgap materials. All of them are squeezed by the same three constraints Merkle keeps naming: a supply-demand gap, high manufacturing costs, and production waste.
The next-generation materials Crystal Sonic targets - the workhorses of modern power and RF electronics.
EV power electronics, 5G, satellites, LEDs, fast chargers, RF amplification.
Demand for wide bandgap chips is outpacing supply - and waste makes everything cost more.
The press calls his tool an "acoustic scalpel." It cuts by persuasion, not force.
First career: tools to see inside materials. Second career: a tool to take them apart.
90%+ of the wafer is normally lost. That waste is the whole reason Crystal Sonic exists.
DOE, NASA and the NSF have all funded the science behind Sonic Lift-Off.
It started in borrowed ASU lab space before moving to the Silicon Desert proper.
The goal Merkle keeps returning to is sustainable semiconductor manufacturing - making next-generation chips affordable by ending the enormous material loss baked into how they are cut today. If a substrate can be reused instead of wasted, the economics of clean energy, electric mobility and high-performance computing all shift. That is the bet: that the quietest part of the factory - the cutting - is where the biggest savings have been hiding all along.