Author Archive for hschmidt

Sep17th2008

Nano-Storage, the Store-Gen Grid and Hurricane Ike

Hurricane Ike has given us a massive object lesson on the importance of implementing the late Rick Smalley’s vision of the Store-Gen Grid (SGG; graphic courtesy Wade Adams at Rice’s Smalley Institute) – a highly distributed network of granular electric production and storage.  One of the elements of the SGG concept is a household storage unit for about 100 kW-hrs of dispatch energy. 

 Smalley's Store-Gen Grid Concept Could Keep The Lights on After a Hurricane

Well, we ain’t there yet.  Of all the standard infrastructure services, only two seem to be reliable in a pinch: cell phones and natural gas.  The electric grid is plainly extremely fragile.  This is a major opportunity for nanotechnology.  With a major power outage in the energy capital of the world, this topic ought to get *lot* more traction, and fast.  So get your thinking caps on.  According to the Houston Chronicle, nearly 3 million people lost power due to the storm.  So I reckon there are about 3 million ready customers for the next big thing in distributed power.  I’m one of them!

 

Now, when considering storage technologies, energy density *really* matters!  Among practical materials, nothing is even comes close to gasoline or diesel fuel.  Just before the storm, my wife was wise enough to ignore my objections and bought a neat little Honda 2kW generator.  I got ten gallons of gas on Friday, and used about five gallons over a 36 hour period.  This was just enough to keep the refrigerator going, charge cell phones, and run a lamp, two fans and a small TV set.  This enabled us to essentially camp-out in our house.  Forget about air conditioning, running the washer/dryer or taking a hot shower (the darned water heater has an electric starter).

 

Here are some representative (volumetric) storage energy densities (from Wikipedia):

 

Technology or Material

Energy Density ( MJ / liter )

Capacitor Ultracapacitor

~ 0.050

Lead acid battery             

~ 0.15

Flywheel

~ 0.50

Lithium ion battery     

~ 1.50

Hydrogen Fuel Cell 

~ 1.62

Li Ion w/ nanowires   

~ 2.60

Ethanol                 

~ 24.0

Gasoline                

~ 34.6

 

Let’s look at the Lead-Acid Battery (LAB) as an example, since it’s still the workhorse for storing electric energy.  My five gallons of gas would equate to 4,383 liters of lead-acid batteries (LABs) (3.8*5*34.6/0.15).  My total investment for generation and storage was $1020 ($1000 generator, $20 gas).  How much does 4.3 cubic meters of LABs cost again? - about $20-$50/liter?  And how much does it weigh?  I can (and did) carry (lug) the generator and the five gallons of gas myself at the same time. 

 

Overall, electrical storage energy density is worse than chemical storage a good factor of ten or more.  An order of magnitude (or two) is nothing to sneeze at!  It is plain that without sufficient oil/gasoline/diesel, we are in a world of hurt for the foreseeable future.

 

Each of the technologies listed above employs, or can be improved with, nanotechnology or nanostructured materials.  Let’s do a little math and get a handle on the nano-scale challenge involved here.  If gasoline has an energy density of, say, 35 MJ/l, it equivalently contains about 3.5 x 10-17 Joules per cubic nanometer.  Modeling this as a parallel plate capacitor in vacuum with a 1 nm gap, you get the target energy density with a voltage difference of about 2.8 Volts.  If you use a decent dielectric like TiO2 (k = 40ε0) instead of vacuum, you only need 0.44 V.  About 1 V/nm is a pretty stiff electric field, but not larger than those considered routine for ultra-thin gates in the semiconductor industry.  This all seems pretty doable; making the nanowire connections to the outside world will be the tricky part; it’s probably a job for carbon nanotubes or maybe graphene.  Rick would have liked that. 

 

I hope somebody out there gets to work on this pronto!  Even at $100 / liter, it would be a useful technology.  When you get the cost down to about $10 / liter, you’ll be a bona fide hero, and a very wealthy one at that.

 

Sep6th2008

Ripening Houston

Yesterday, Josh Tabin gathered the Startup Houston contributors to lunch at El Meson; the company and the food were both spicy and excellent (thanks, Josh!). Collectively, and individually, our goal is to help transform Houston into a dynamo of entrepreneurship.

Of course, the main discussion was about start-ups and the environment where they originate and grow – and what we could do to help. As in any conversation about start-ups here, the disappointing fact came up regarding how venture capital is so concentrated on the East and West Coasts (the Bay Area and Boston) and how Houston (and indeed Texas and the other 48 states) is ignorable fly-over country.

I’ve heard comments like that for a long time. And while is certainly true that the preponderance of venture capital and start-ups are both concentrated in those areas, stopping the conversation there, as often happens, isn’t constructive. It makes me think of frustrated bird-watchers looking for some rare scavenger species with a weird diet (e.g. start-ups that can’t live without vitamin VC).

The musing geek part of me is also reminded of Ostwald Ripening (Figure from Wikipedia). This describes process by which a large ensemble of small particles usually ends up as a small collection of large particles. It’s often an important issue in nanotechnology. You can see a very nice simulation of the process here (warning: big animated gif).

Ostwald Ripening Schematic

Ostwald Ripening Schematic

Here’s the point: is there some social or business process that makes start-ups diffuse to where the VC’s are? Maybe so – I need to ponder that some more. I’m pretty sure that it accounts for the old adage about the rich getting richer. Perhaps it also explains why there is more money in banks than laying on sidewalks, and why trash ends up in landfills (OK, maybe not on those two).

But back to the lunch discussion - of course, we got past the forlorn birdwatcher stage quickly. We all have particular perspectives about important growth factors.

Here’s mine: I think that start-ups come from combining customers with ideas in the presence of an entrepreneur. Now that can be an explosive mixture – fuel, oxidizer and spark. But I’m talking about real customers – live people you meet face to face that have real problems they’ll pay money to resolve. And real ideas – potential solutions that arise from some well informed knowledge about how things work – and how you might be able to make them work better. Of course, you can have a business idea essentially in a vacuum, but if you’re idea serves some faceless ‘market’, you’d better track down a real customer to vet it. And if you have a general idea for a better widget, you’d better find some technical specialist to validate the approach (or learn enough to do it yourself).

The rate limiting step is thus connecting customers with potential solutions. (I know it’s true for me – every time learn about the key problems in an industry, I come away with a year’s worth of ideas). Note that no money of consequence is needed for this. So far, VC’s are irrelevant. I reckon that a big reason Silicon Valley shines for start-ups is because there are a lot of ideas and a lot of customers in a small area. The staff churn out there (yuck!) probably accelerates the process, too. Note that most of the start-ups there involve electronics or software. In my experience, the initial barriers to entry in those fields are generally low and the costs to make or mock up a demo are pretty low, too.

I think that Houston has plenty of customers, and I know that there are lots of well-informed technologists here. So what’s missing? Two things come to mind – Houston is very spread out compared to Boston and the Bay Area, and our major industries, energy and health care, are capital-intensive monoliths. So the flux of entrepreneurial connections is lower, and the barriers to entering the market are fairly high.

The flux issue can be partially addressed by mixer conferences – like the Rice Alliance, BioHouston, Houston Technology Center and Startup Houston events. These are great; we need to grow them and multiply them. And generate some new meetings that are more technology/industry specific. The cost of seeding an idea is a problem if you’re going into energy or biotech, though. My general suggestion is to bootstrap aggressively by using SBIRs and STTRs and connecting with academic laboratories at Rice and the University of Houston. This approach allows you to get to the demo stage while you keep your day job. I’ll write more about that later.

I’d finally observe the obvious – energy is THE hot topic nowadays, and Houston is the world’s energy capital. So we have a big natural advantage and we really should exploit it. I’d note also, that there is an important new trend towards distributed energy - this means small granules of generation and storage at the point of consumption. Thus, some of the monolithic nature of the energy industry is getting deconstructed. This is a MAJOR opportunity for Houston entrepreneurs.

I hope to have a lot more to write about distributed energy in the near future – if you have stories, applications, events, etc. on this, please let me know.

Jul24th2008

Texas-Sized Nanotechnology

Dr. Howard Schmidt is a native Texan, a long-time Houston resident and a serial entrepreneur.  He grew up San Antonio and moved to Houston to attend Rice University, where he got a BS in electrical engineering in 1980, and then a Ph.D. in physical chemistry in 1986.  Since then he has been involved in four technology start-ups, including SI Diamond Technology, an early nanomaterials company that he took public in 1993.  In 2003, Dr. Schmidt joined Rick Smalley’s research team as the Executive Director of the Carbon Nanotechnology Laboratory.  Schmidt is now a Research Fellow in the Chemical and Biomolecular Engineering Department at Rice, mainly focused on developing energy-related applications of single-wall carbon nanotubes.  He also serves as Senior Nanotechnology Advisor to the Advanced Energy Consortium, and is on the board of Axion Power International. Dr. Schmidt has agreed to become a regular contributor to Startup Houston; this is his first post.

The Advanced Energy Consortium (AEC) just officially announced its first Request For Proposals (RFP). This is big news for us little (nano) people, and it seems a good topic with which to kick off a new column on nanotechnology, commercialization and start-up companies.

And it fits in nicely with my personal perspective on technology and start-ups. For me, technology is pure fun - it’s using science, engineering, imagination, persistence and a little luck to solve a problem, make something work, make some novel material, etc. But starting a company is serious stuff. There can be fun involved, of course. Watching a new company progress and grow is big fun. But you don’t start a company for fun; you start a company to make money. And money comes from customers. Customers fork over money because you and your technology solve some problem they have. Many technologists start companies because they love their technology, not because they have a customer asking them to turn pro and sell them a zillion copies of their new widget.

And that is what makes the AEC and their RFP soooo cool. It’s a collection of well funded customers that are telling us what they want to buy. The AEC sponsors include six integrated exploration and production companies (BP America Inc., ConocoPhillips, Marathon Oil Corp., Occidental Oil and Gas, Shell and Total) and three major well services companies (Baker Hughes Incorporated, Halliburton Energy Services Inc., and Schlumberger). At this point they’re looking for basic micro- and nanotechnology research and development services. Eventually, the hope is that this research will generate fieldable technologies for locating and extracting oil from known reservoirs. They’re essentially shopping for technologists that they hope to pay to develop new tools that they will eventually buy to produce oil.

In general, my expectation is that this R&D activity will spawn new materials and sensing methods; some may get used directly by the majors, but most will get bundled into a package and distributed by the service companies. A likely play for entrepreneurs is to manufacture the materials and components and then provide them to the integrating service companies. Talk about soup-to-nuts market pull!

The RFP is open to all bidders (universities, small businesses, large companies, national labs, you-name-it) world-wide, although I would have to predict that academic researchers will gain the lion’s share of the contracts. They have an advantage in cheap labor (graduate students) and extensive facilities for characterizing new materials. But something nanotechnologists usually do not have is a) a working knowledge of hydrocarbon production and b) experience at commercializing some new widget.

This makes for an important opportunity for Houston entrepreneurs. Since Houston is the energy capital of the world (right?), there are plenty of working and retired experts here in oil and gas production. Those academic researchers will be well served by teaming up with O&G experts to round out their teams via consulting or subcontracting arrangements. Similarly, if you have a killer idea, you could find academic researchers to help perform the research or characterize the materials. You can find potential partners by trolling the ‘research interests’ websites of individual profs at the local research universities, Rice and UH. UT and TAMU are not too far away to collaborate with, either. Most professors are quite approachable if you a) know what you’re talking about and b) can provide some complementary resource. They’re amazingly pressed for time, and complete experts at evaluating ideas quickly (from peer reviewing each other’s papers and proposals), so don’t take it personally if you get a ‘no’ pretty quickly. Also, keep a look out for PR coverage of breakthroughs from AEC funded research over the next year or two. They’ll also turn up at events like the Rice Alliance meetings. Those research products will need experienced entrepreneurs to make the commercial transition.

Overall, I think this bodes well for generating a number of great start-up opportunities in Houston. Happy hunting!