Archive for the ‘Ponderings’ Category

Where Have All the Innovators Gone?

Tuesday, February 13th, 2007

People have often asked me, now that I have some perspective on China, what I think will happen to the US. Can we compete? Will we continue to lead? I’m quite bullish about the US in general, but I had an interesting reality check tonight. I’m at ISSCC 2007 right now (where I and my former colleagues at Luxtera had the honor of receiving an “outstanding paper” award for work presented at last years’ conference), and I was chatting with UCSD high speed integrated circuits professor Jim Buckwalter about the nature of the graduate student applications he has received.

The statistics were astonishing. Of the thousands of applicants, only 80 were from the US. To put this in perspective, he had more applicants with the surname “Lee” alone than he had domestic applicants. And UCSD engineering is no slouch; according to the rankings they are #11 in engineering overall. Even more interesting is that apparently Korean students studying in the US get Korean-government sponsored fellowships–clearly that gives them an edge when considering who to take into your graduate program.

The enormous disparity in domestic applicants to higher education in crucial fields such as high speed circuit design is a bit disturbing. With numbers like these, it is inevitable that the US will lose its edge in technology. I guess it wouldn’t be as bad if these foreign students actually stayed in the US and started companies, but my experience in China has shown that just about every company I talked to had US-educated management from schools like Berkeley and Stanford.

Now, a protectionist mode of thought would suggest that we should put quotas on the number of foreign people we admit to our universities. That doesn’t work because US citizens don’t want to go to graduate school in electrical engineering, as evidenced by the paltry showing of domestic applicants, and forcing them in doesn’t make us more competitive in the global sense.

As the son of Chinese immigrants born and raised in the cornfields of Michigan, clearly I’m disposed to argue that we should try harder to woo these brilliant foreign minds to graduate and set up shop here in the US. Back when my parents came, staying in the US was an easy decision, because China was not a land of opportunity. But in this new global economy, the US no longer has the monopoly on opportunity. That’s the big paradigm shift here that I think we aren’t internalizing. We are no longer “the land of opportunity”– we’re now just one of the better places to find an opportunity.

When you don’t have a monopoly, it means there is competition. We need to compete to retain foreign talent, but instead, we hassle them away. I just wrote a green card recommendation for a brilliant photonic circuit designer. It seems weird that he has received such scrutiny and is going through such detailed background checks when anyone who lives in a border town like San Diego knows there is another easier way for immigrants to sneak into the country and make a living–and I have a feeling the guys sneaking in don’t have PhDs in electrical engineering. And it really bugs me that a brilliant Iranian circuit designer friend of mine just got interrogated by the FBI out of the blue, but presumably motivated because of current events in the world. He’s not a terrorist, and he doesn’t make nukes, despite his Farsi-sounding name. He is a core technical contributor in a US electronics company whose work has been critically peer-recognized as innovative and valuable. We should be rolling out the red carpet for these innovators, and not making them feel like aliens.

While I understand the motivations of many of our immigration policies, it is becoming clear to me that in practice, something is broken here, and the loser will be the US. The beauty of a melting pot is that we have the opportunity to incorporate the best and brightest minds into our culture; instead we skim the cream and throw it away, simply because they are the easiest and most cooperative targets. The system is hassling the people who are educated, and rewards those who are not. This is because the educated ones know the rules and are held to a high standard, and those who don’t know the rules often are not well educated so they have well-meaning public advocates who try to represent and defend their interests.

Of course, these privileged foreigners don’t need public advocates, and they don’t make a fuss, so their problems rarely garner the attention of the public eye. They are resourceful, self-sufficient, and they have other options–if the US gives them the run around, they can always take their good ideas and start a company back at home.

Name that Ware January 2007

Thursday, February 1st, 2007

The ware for January 2007 is shown below. Click on the image for a much larger version.

It’s unusual that I would post something that is a prototype that I made for Name That Ware; I usually consider my home-built prototypes to be unfair for the competition because I can make it arbitrarily obscure because by definition nobody else has seen these. However, I have a bit of a bone to pick this month. I try to avoid using this blog as a platform for my (biased) opinions, so I apologize for the rant: I feel this strikes too close to home to be left alone.

Some of you may be aware of the bomb scare in Boston caused by a guy who simply put circuit boards with LEDs up around the city. Those of you who read my blog frequently can probably guess that I’m not only upset by this, I’d be positively incensed by the sheer idiocy of the city of Boston in handling this situation. To quote Massachusetts Attorney General Martha Coakley, the maker of these is charged with a felony for creating a device described as follows:

“It had a very sinister appearance,” Coakley told reporters. “It had a battery behind it, and wires.”

Oh. My. God. What in the hell is she thinking? My whole life is about making stuff that, by her definition, could be interpreted as sinister looking. Am I now a terrorist? Or am I just a hard-working, freedom-loving engineer who doesn’t bother to put a nice shiny case around everything I build? Should I be arrested for walking around in public with these devices? And perhaps even displaying them as works of art, carrying them around with me to raves and other public places with lots of people at them? I can’t tell you how many times I’ve hopped on an airplane with devices that probably look more sinister than the one above, but are just as benign. And then, if you only knew how dangerous the Lithium Ion batteries in every laptop was in comparison to the stuff I have built…

Here’s another choice quote from the article:

‘”Scaring an entire region, tying up the T and major roadways, and forcing first responders to spend 12 hours chasing down trinkets instead of terrorists is marketing run amok,” Markey, a Democrat, said in a written statement.”‘

Look. Who scared the region? The signs, or your reaction to the signs? Have you not forgotten the immortal words of FDR:

“The only thing we have to fear is fear itself.”

If Boston had simply looked at the signs and evaluated them, there would be no scare, and no impact. Some of you may argue that you would rather be safe than sorry. Caution is always a good idea, but you need to be educated in what you’re being careful about. Simply going after whatever Hollywood might portray as a bomb, or what an uninformed person may phone in to be a bomb, is the making of a witch-hunt society. If I have a score to settle with my neighbor, I could just make it even by calling in the terrorist squad on them for having several empty bottles of detergent around their house because bleach could be used to make bombs. You can pay all the money you want to a terrorist response team, but if they are uneducated, they are still ineffective, and all they do is propagate the sense of insecurity and terror. I’m scared because now I know idiots are looking after our cities.

How many terrosists have these people chased down, exactly? I think the problem is that everyone is looking for terrosists so hard that even a humble artist has now been turned into a terrorist because over-funded and terribly ineffective programs are turning out to be a waste of public money, and these programs need to find a raison d’etre. Don’t blame the incompetence of your team on the artist. Blame your incompetence on a total lack of knowledge on the part of your team. Anybody lightly trained in the art of electronics–every reader of this blog, in fact–could immediately recognize the fact that what was in Boston was not a bomb. Wires and a battery pack do not make a bomb. At worst, the artist could be accused of vandalism; at the best, the artist is exercising his right to Free Speech.

Let me tell you what I worry about. The Spanish Flu was recently synthesized and tested on a primate population to study exactly how it managed to kill 2.5-5% of the world’s population in about one year, or 25 million people back in 1918 (see Nature vol 445, No 7125, pp237, “Concern as revived 1918 flu virus kills monkeys”). We’re still vulnerable to this strain, H1N1, of influenza, and it’s much more deadly than H5N1 (aka the dreaded “Avian Flu”). What of the terrorist who walks through Chicago O’hare on the Wednesday before Thanksgiving with a 4-oz spray bottle full of this or a similar virus, putting on his or her deadly “cologne” while waiting for their delayed connection in the crowded terminals? Extrapolating statistics, that would be 150 million people killed worldwide by the virus in 25 weeks. Remember that the US only has 300 million people. (Not a totally fair comparison, first because it is worldwide deaths vs. the US population only, and second because we have had great medical advances since 1918. However, the mechanism for killing by the virus is a Cytokine storm, which kills very rapidly and quickly–by the time you thought about going to see the doctor, you are probably about to die). Should we still research H1N1? We absolutely should. We need to understand this threat to combat it. Perhaps you say H1N1 is too esoteric for a terrorist to get ahold of. Well, last I checked, its less lethal “Avian Flu” friend (H5N1) that you have probably heard about is breeding in the poultry stocks of many third world countries. And even if its mortality rate is below 0.2%, consider the economic impact it would have if all the airports were shut down because it was reported that our busy travel and commerce system was being used as a conduit to spread the virus. Or, if you are worried about economic impact and not deaths, howabout global warming? There’s a problem that will impact generations to come and our leadership continues to bury its head in the sand about it. The Department of Homeland security will spend $35.6 billion next year searching for terrorists, but only $3 billion researching global warming. Do we have our priorities correct? We could lose double-digit percentages of Florida’s landmass as a result of global warming. And unlike terrorism, global warming is now pretty much a certainty. It’s not “if”, but “when”.

In the end, this “War on Terror” has done nothing but induce more terror on the population. The government introduced a whole new set of apropriations to deal with terrorism; now, these large, expensive organizations are looking for a reason to exist and they are justifying their existence by extending the reign of terror on the population and using innocent Americans as scapegoats. You want to know what really kills Americans? Smoking. Heart disease. Drunk driving. Lack of exercise. McDonald’s and Philip Morris has lead to the deaths of more Americans than any terrorist group, but I would never, ever, suggest that we ban such organizations. Choice is beautiful, even if it can be dangerous.

Don’t get me wrong–I’m not of the opinion that I think we should do nothing about a potential terrorist problem. Some measures were productive and effective, and probably good for us in the end. The point of this post is that despite the good things that have happened, I think that now things have gone just a little too far in the wrong direction and we are starting to lose the very thing we are trying to protect, our civil liberties and our peace of mind. We have scared ourselves into believing that ghosts are real, and this event shows us that it’s time to reconsider the reality of the situation.

I believe that fundamentally, the most effective way to deal with terror is to not be afraid of it. I say take it with a stiff upper lip, ignore it, and live life like you used to, as a free society with great liberties and tolerance for all walks of life. Travel. Express. Build. Innovate. Research. Be an Individual. Be smart about who you trust, but still be willing to trust. Even if you don’t understand someone right away, it doesn’t mean they are out to kill you. If you are afraid of terrorism to the point where you fear that a hack-job lighted sign could be a bomb, then you shouldn’t even be on the road. The more you try to look for terrorists, the more terrorists integrate into society and go under the radar, and the more successful they are at causing the population to terrorize itself.

Just because I live in a world of circuit boards and batteries, and because I’m not like you, doesn’t mean I’m a terrorist.

Thanks to those who read this post. I know there are those of you who will disagree with me, and I expect that you, too, will express yourself in my comments section. I apologize for this rather political and probably controversial message, but I feel if I don’t speak up about this, it may only be a matter of time before my rights are directly threatened:

Real Sichuan Food

Wednesday, January 31st, 2007

Despite growing up in a Chinese family (granted, a Chinese family in the midwest of the USA), until last week, I was never exposed to real Sichuan food. Sure, sure, I had sampled many of the restaraunts in various cities in the US, but typically the cuisine was Cantonese, Shanghainese, Taiwanese or at best Hunan. Eating real Sichuan food in China (yes, I was back there again!) was a bit of an experience.

Soo…above was a chicken dish I had. Well, chicken is sort of applied in the loosest of ways. It’s more like chicken hidden in a sea of red peppers. You sort of pick your way through it, looking for morsels of chicken, and the bolder ones of course just eat it all. But that wasn’t the most interesting thing.

Above is the real Ma Poa Tofu. It looks innocuous enough, but to my surprise, there is a spice I have never had before. My hosts couldn’t translate the English name to me, but it turns out to be, according to Wikipedia, the Sichuan Pepper.

That’s it up there. In Chinese, the word for “spicy hot” is la. The word to describe the effect of the spice pictured above in Chinese is ma–and that’s the “Ma” in Ma Poa Tofu that I had been missing all my life (nice how ma and la rhyme, huh? makes for some poetic sounding dinner conversation and cheeky sayings about the Sichuanese in Mandarin). Many of us are familiar with the la sensation–that burning, five-alarm sensation in your mouth. Ma is something else. Your lips tingle and numb. Your mouth tingles. As you swallow it, your stomach feels strangely warm and tingly all over. It’s definitely spicey, but it’s not hot…it’s…ma. I think the ma sensation fights the hot-spicey sensation so you can eat more of it. Or something like that. But everything they say about how hot Sichuan food is, is true. And anecdotally, just as addicting. My friend was telling me that his friend’s girlfriend is from Sichuan, and apparently if she doesn’t eat at least one scorchingly hot meal a day, she gets extremely irritable and very aggressive.

I’m wondering how in all my years eating Chinese in the US, I have never come across this spice. The Wikipedia page notes briefly that the FDA banned it from 1968 to 2005, which may have something to do with it.

You learn something new every day. Speaking of learning new things, did I ever mention that the Irish slang for an unstable object is “wonky” (for example, a table with uneven legs is a wonky table)? I learned that too on this trip, from a joke this Irish girl told me at a pub: Q: What do you call a three-legged Donkey? A: A Wonkey. Q: What do you call a three-legged donkey with one eye? A: A winkey-wonky…I tell you, Shenzhen is growing up to be a rather international place!

And another factoid for you: there are seven women for every man in Shenzhen. I have no idea how true this is–my host asserted this to me–but it seems consistent with the ratios I’ve seen in every factory, office, store, and pub in that city.

The Sichuan chef’s arsenal…

45 nm High-K Transistors

Monday, January 29th, 2007

I just noticed that Intel announced Hi-K dielectric transistors at the 45 nm node. It’s interesting that they are using a metal gate along with a deposited Hafnium-based dielectric…ironically, we’ve returned full-circle to the “metal-oxide-semiconductor” transistor structure (for decades it’s actually been “(salicided) polysilicon-oxide-semiconductor” devices, not quite true to the original acronym of MOS). It will be interesting to see how they solve the self-alignment issues associated with not using a native oxide grown on the silicon. The tear-down of these devices will be one Chipworks report worth buying. Or I suppose I could just wait a couple of extra months until the reversers are done and more papers/patents are published. I noticed that Intel made a point of saying that their Hafnium compound is a trade secret, which probably means that even once the guys have determined the atomic structure and stoichiometry of the gate using techniques like EDS, there is some extra secret sauce in how the compounds are piped into the deposition chamber and so forth that Intel isn’t even going to patent, and instead [attempt to] protect like the secret formula for Coca-Cola.

Also, the even more interesting question for me is if this technology can be extended to substrates such as GaAs or InP. III-V devices can’t grow a good native oxide and have lagged behind Silicon as the preferred material for manufacturing because of this problem. Now, Silicon has metal gates and a non-native oxide at the 45 nm node…

The mind boggles. If you could port this technology to InP–assuming you could start growing larger wafers (or perhaps even not? at 45 nm you can pack a lot of circuits on a 2″ or 4″ wafer)–you could start talking about some very interesting integrated optical systems, not to mention some wicked fast processors and even better performance RF devices.

DNA Hacks — More Bits per Basepair

Thursday, December 14th, 2006

Eric Kool (what a name, I wonder if he has a brother named Joe) at Stanford University has created a clever hack on DNA where instead of storing the customary two bits per base pair, it can store three bits. Here, he inserts a benzene ring into the chemical structure of the nucleic acids and creates an “expanded” base pair set, thus increasing the set of base pairs from C,G,T, and A to include xC,xG,xT, and xA. So now, instead of being able to store just A-T/G-C pairs, a piece of DNA can now store xA-T, A-xT, xG-C, and G-xC combinations (x-x combinations and non x-x combinations are disallowed due to spacing design rules imposed by the rigidity of the deoxyribose backbone). It’s like StrataFlash for your cell nucleus. Of course, there are no polymerases in the cell that can handle replicating these, and there are no metabolic pathways to synthesize these nucleotides, but Rome wasn’t built in a day either.

Okay, okay, so this wasn’t a name that ware–it’s coming soon, I promise, and it’s a pretty interesting one too, I think–but when I read the article in Nature, I thought it was just too cool not to write a short post about it. The thought that something as evolved and taken for granted as DNA can be improved upon is pretty exciting; there’s apparently a lot more to explore out there! Presumably, there is some marked downside to xDNA, otherwise, evolution would have picked up on it…perhaps the metabolic overhead of creating and maintaining all of these extra base pairs wasn’t worth the overhead of getting better coding efficiency. Small viruses could probably benefit from more coding density, but there’s that nasty interoperability problem of xDNA with regular DNA. Then again, evolution tends towards local minima, and perhaps xDNA is in fact superior but chance never lined up to put all the right factors together in a single cell to create a sustainable xDNA line. I wonder if there is some alien lifeform out there (or perhaps a yet undiscovered species on this good planet) that uses the xDNA coding scheme.

Here’s the image from the Nature article, which gives you a better idea of how this stuff works: