zapperz

Interview with a Physicist: ZapperZ

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This is a new Interview category for Insights. While I line up some great new interviews I’ll be migrating some previous mentor interviews.

ZapperZ is a staff emeritus at Physics Forums

 

Can you give us a brief history of ZapperZ?

Without reveal things that are answers to a few of the security questions to my accounts, I would say that growing up, I had no intention of being a physicist. In fact, my early ambition was to be an engineer or an architect. I remember vividly when I was a child playing with Matchbox cars. I used to collect all these hard-cover books, dominoes, wood blocks, and anything else that I could find to build these huge and elaborately complex “parking garage” with twisted driveways, just to park all of 2 Matchbox cars! The engineering desire won out early in my undergraduate years and I was a freshman majoring in nuclear engineering. However, a year into it, I switched major to physics after taking undergraduate intro physics and realizing that physics was what I wanted to study all along.

I received my B.Sc and Ph.D in physics. My Ph.D research was in tunneling spectroscopy of High-Tc superconductors, which back in the 90s, was still a very hot area of research. As I was about to complete my education, I was at a proverbial fork in the road. I had a job offer at a semiconductor high-tech company, or a postdoc position to do work at Brookhaven. The former meant moving to another state and a generous paycheck (when compared to the measly stipend as a graduate student), while the latter also required a move to another state with a more modest income, and a temporary position. It took a lot of soul-searching, and it was the hardest decision that I had to make. While to others, it was almost a no-brainer on which to accept. deep down inside, I really wanted to pursue a career in research and investigation, even though that career path would not be easy. So I turned down a more lucrative offer and lived the life of a poor postdoc for the next 3 years. This was one of the most productive years of my life. We published 2 PRL papers, 1 Nature paper, and a couple of other papers in smaller journals. I also got to learn a whole slew of experimental techniques and diagnostics that became the most important skills of my career.

At the end of my stint at Brookhaven, I came back to the Chicago area and accepted a position at Argonne, but with a change in fields. I went from being a condensed matter physicist to an accelerator physicist. This meant that I had to learn, and learn quickly, a new area of study. Luckily, I had help, and my background as a condensed matter physicist was actually crucial in this new field. I managed to tackled a number of problems due to my knowledge of material physics. I remained in that position until late last year when I accepted a research faculty position at a local university.

How did you become so interested in all things Disney?

I was not a Disney “fanatic” as a child. In fact, I wasn’t even fond of Disney cartoons (I’m more of a Looney Tunes fan). However, on my 2nd trip to Walt Disney World as an adult in 2001, I fell in love with the place for some odd reason. I went with friends who knew the place inside out, and pointed out all the small details, the stories, and the significance of many parts of the theme park. It opened my eyes to how wonderful the place was. This “addiction” is rather strange because Disney and its insistence on the belief in “magic” is the antithesis of my profession as a physicist. Nevertheless, emotional attachment can often be irrational, which is something I accept. I love it, but I try not to take it too seriously, and this allows me the ability to enjoy the whole immersive experience.

However, the one trait that I found in common between Disney and physics is the attention to detail. As Mies Van de Rohe often used to say, “God is in the details”. I admire that quality about Disney theme parks where there are numerous amount of attention paid to the details that most guests are not even aware of. Their insistence on doing such details, even when most guests are oblivious to them, shows an exacting and uncompromising standard that all other theme parks simply can’t measure up to.

The very same attention to details in physics is where we discover new things, learn new physics, and when we make something clicks. It is when we understand the intricate details of a phenomenon or a theory that we start to have an understanding beyond just something superficial.

I hear you have an amazing Disney pin collection. Tell us about it and how you collect.

Oh geeze! :)

Disney has produced a gazillion pins of different types, varieties, and occasions, and they continue to do so. So inevitably, there are people who collect them, and most collect certain themes, characters, etc. I started to seriously become a Disney pin collector after attending a pin event at Epcot in 2005. It was a slippery slope, and I became a full blown collector after that. What I enjoy most is the pin trading, both with other Disney pin collectors and Disney cast members. I thoroughly enjoy the social aspect of pin trading, being able to approach another Disney fan or cast members and trade pins, talk about our addictions (misery loves company), and basically meet new people. Since becoming a Disney pin collector and trader, my circle of extended family has expanded considerably. I have many people who I’ve met through pin trading who have become practically my family.

And for the record, my collect Donald Duck, The Fab 5, and Disney park icons pins. Anyone has any to trade?

What were some of your biggest challenges in completing your PhD in physics?

There was a major challenged in STARTING my PhD, which was the qualifying exam (which is a challenge to most students). However, I don’t recall any challenges to completing my PhD. By the time I finished writing my thesis and ready to do my defense, I was quite comfortable with my grasp of the knowledge and my ability to present it in front of an audience and the thesis committee member. I knew that the only thing that would prevent me from graduating was if I were to fall flat on my face and did a disastrous job in my defense. I don’t think my situation here was unique to me since I think that is a normal case for many people who were about to finish their Physics PhD.

Which physicists were most important to you while growing up and through your studies?

I didn’t have any “hero” physicist when I was growing up. As I said earlier, I didn’t have any intention of being a physicist.

During my studies in college, I came to admire John Bardeen considerably. Here was someone who is not a household name but has had more impact on our human civilization than almost all other physicists: (i) the only person who won the Nobel Prize in physics twice; (ii) part of a trio what invented the transistor; (iii) formulated the theory of superconductivity (BCS theory) that has such a wide-ranging impact into many other areas of physics. Yet, with all of his accomplishments, he was a very down-to-earth, decent person with hardly any eccentricity.

As a physicist, what are your job responsiblities and what is your daily work day like?

Being new to the world of academia, I’m still finding my way around. I supervise the work of 2 graduate students, one about to finish his PhD. I also supervise a few experimental work, wrote a couple of funding proposal (not easy in this climate of budget sequestration), and generally try to come up with new projects that we can do. That last part isn’t as easy as it sounds. While I have plenty of things I would like to do, the reality of the job dictates that what can be done requires the availability of manpower, equipment, and funding. So any ideas or projects must fall within such constraints. To me, that is the hardest part of being a physicist, or at least, being an experimentalist. What you are able to do is not solely dictated by physics merit.

What area of physics or problem in physics, would you like to see more development in? (excluding TOE)

Definitely the area that I’m most involved in – photocathode development for accelerators and photodetectors.

Till about maybe 5 or 10 years ago, the development of photocathodes for both applications have either been carried out mainly by accelerator physicists or high energy physicists, or they were done by private companies that consider their knowledge as proprietary. So the development of photocathodes for such applications were done haphazardly, and mostly by trial-and-error. The work done by Spicer and company in the late 60s and early 70s were still being cited and still considered as a standard.

It is only recently that there is a real effort at getting everyone in the photocathode effort to organize themselves and make an attempt at producing a systematic and coordinated studies in understanding the physics of photocathodes, and also to engineer and design photocathodes for specific and future applications. This requires the expertise of those in condensed matter physics/material science, resulting in a significant “cross-breeding” between the two disciplines. This initiative emerged out of the realization that future applications such as next generation free-electron lasers, energy-recovery linacs, future particle colliders, fast and cheap photodetectors, etc. put significant demands on the quality of the electron pulses and beams emerging out of the photocathodes. The present batch of high performance photocathodes may not be able fulfill such demands and may hinder progress for those applications. So I definitely would like to see more advances and development in this area of study, and I am certainly playing my part in this, especially if our funding proposals are successful.

Note that while the focus on the applications of these photocathodes are rather specific, the impact of the successful development of these applications can be huge, and will have a direct influence on a lot of people. There are already significant interests from the medical community on large and cheap photodetectors that can be installed in PET scanners. Having a more sensitive photocathode in these detectors will allow for not only a faster PET scan, but also the use of a significantly lower dose of radiation on the patient, which would be a tremendous benefit in lowering the patient’s risk of exposure.

Do you have a favorite thread at PF?

At the risk of sounding conceited, it is the My Disney Mania thread that I created a few years ago in the General Discussion forum. It was a lot of fun and a wonderful diversion while it was active. The “live” trip report when Moonbear and I made a trip to Walt Disney World was a hoot.

Is there a recent development in science/tech that excites you?

Yes. There are two in particular. The first is the discovery of topological insulators. This material, and the physics associated with it, promises to be a system that is extremely rich that will allow us to test many aspects of quantum field theory. It is another example in which a condensed matter system can easily influence fundamental physics.

The second is the development of advanced accelerators as the next generation of particle accelerators. These are accelerators based on generating electromagnetic wake fields to create such high accelerating gradients. Currently, there are three different schemes to generate such wake fields: laser-induced plasma wakefields, electron-induced plasma wakefields, and dielectric/metallic vacuum wakefield structures. The future of high energy physics depends on the success of these schemes being able to design accelerators to even higher energy scale at an “affordable” cost.

I have a BS in Information Sciences from UW-Milwaukee. I've helped manage Physics Forums for over 14 years. I enjoy learning and reading about new science developments. I have a lovely wife and a cat named Mason.
21 replies
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  1. ZapperZ
    ZapperZ says:

    If funding wasn’t an issue, what kind of research would you do? What’s your dream project?

    I know exactly what I want, because I’ve discussed this with several people already.

    I want a suite of instruments, all connected together to allow for the transfer from one instrument to another, all in ultra-high vacuum environment. The first instrument that I want is a deposition chamber that houses (i) thermal evaporation units; (ii) a sputtering system; and (iii) a laser ablation system. The sample holder has the capability of heating the substrate and the sample from LHe temperature all the way to 1000 C. The chamber also has RHEED/LEED and an XPS system to allow for monitoring the deposition.

    The second chamber is an ARPES system with an electron analyzer having better than 5 meV energy resolution. This will allow the study of the low-energy band structure of a material. This chamber is also equipped with the instrument to perform time-of-flight measurement that will give a measure of the photocathode’s electronic intrinsic emittance.

    The third chamber houses a STM/AFM/KPFM instrument to perform microscopy on a sample’s surface and also to map the surface potential/work function.

    The final chamber has instruments to measure the quantum efficiency of a photocathode.

    All of these chambers are connected to a central distribution chamber that will allow samples to be transferred from one chamber to another, and will also allow a vacuum load-lock transfer in and out of the system.

    Do you have about $1.3 million to spare?

    Zz.

  2. Kholdstare
    Kholdstare says:

    I received my B.Sc and Ph.D in physics. My Ph.D research was in tunneling spectroscopy of High-Tc superconductors, which back in the 90s, was still a very hot area of research. As I was about to complete my education, I was at a proverbial fork in the road. I had a job offer at a semiconductor high-tech company, or a postdoc position to do work at Brookhaven. The former meant moving to another state and a generous paycheck (when compared to the measly stipend as a graduate student), while the latter also required a move to another state with a more modest income, and a temporary position. It took a lot of soul-searching, and it was the hardest decision that I had to make. While to others, it was almost a no-brainer on which to accept. deep down inside, I really wanted to pursue a career in research and investigation, even though that career path would not be easy. So I turned down a more lucrative offer and lived the life of a poor postdoc for the next 3 years. This was one of the most productive years of my life. We published 2 PRL papers, 1 Nature paper, and a couple of other papers in smaller journals. I also got to learn a whole slew of experimental techniques and diagnostics that became the most important skills of my career.

    ^ This. I did my own soul-searching while being in chip design industry and I got to say it sucx for me to be here. I came here to gain industry exposure and cant wait to get back on academia/other things with lower income.

  3. Evo
    Evo says:

    Awesome Bio Zz!! But I feel it misses telling about how much fun you are and how well rounded you are. You are a great physicist, but you are a gourmet cook with an incredible palate and appreciation for a wide variety of ethnic foods.

    You’ve got a green thumb for orchids and bulbs that most people consider as plants that never live after the bloom they came with from the greenhouse.

    I think a lot people might feel intimidated by you, but they don’t know you. Not that people shouldn’t feel intimidated by you. :tongue:

  4. Monique
    Monique says:

    Could you give an example of the attention to detail at Disney that struck you most? The story is rather abstract to me, I’ve only visited DisneyLand CA and didn’t pay much attention.

  5. russ_watters
    russ_watters says:

    I think I may know/have my own perception: Disney is every bit as complex, planned and coordinated as a major industry that also happens to be a city. I know it is a nerdy way to enjoy it, but that fascinates me.

  6. Borg
    Borg says:

    Great interview ZapperZ. I am in awe of the people on this forum who have perservered in physics like you have. Thanks for sharing even if it did leave me feeling like I lost more than a few points off my IQ. :tongue:

  7. ZapperZ
    ZapperZ says:

    Could you give an example of the attention to detail at Disney that struck you most? The story is rather abstract to me, I’ve only visited DisneyLand CA and didn’t pay much attention.

    I’m currently out of town on Easter break, and will respond to the other queries after I get back. However, I can respond to this one.

    I can give you one particular example of this attention to detail. Look at this picture:

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    This is at the World Showcase in Epcot. It is a view at the Morocco pavilion from across the World Showcase lagoon. Look at it carefully. Can you see a slight problem here?

    Most guests do not notice it. Look at the tallest tower in the picture. Now look slightly to the right of it. There is a building a bit further in the background. This building, believe it or not, is the Hollywood Tower of Terror in Disney’s Hollywood Studios! The building can clearly be seen from another park.

    This is a problem, because it will not only stick out like a sore thumb, but also destroy the theming when viewed from the World Showcase. So what Disney did was to design the Hollywood Tower of Terror with almost the same Moorish architecture at the top of the building, AND, paint it almost the same color as the Morocco pavilion. The result here is that the building blends perfectly when the scenery when viewed from this angle.

    Guests don’t notice this. Most people who are looking in this direction do not realize that they are seeing a part of a building that does not belong there. If the Hollywood Tower of Terror was of any other color or design, it would not have been easily ignored.

    This attention to such detail and the obsessive need to maintain the integrity of the whole experience can be found all over the parks. Many of us Disney park fans love to discover such things.

    Zz.

  8. ZapperZ
    ZapperZ says:

    Brookhaven? Awesome! What was life like there, outside of work?

    There was life outside of work? :)

    As a postdoc, my life then was almost 80% work. Outside of work, there aren’t that much to do in the middle of Long Island. I some time go out with friends from work (all of my personal friends were back in Chicago). Most of the time, we go out to dinner. There used to be a rather good Indian restaurant called the Curry Club in Stony Brook. One of the dining room was in an old train car. But last time I was on Long Island, that restaurant had closed down.

    On almost every other weekend, I would spend a day in NYC. I would take the LIRR into Manhattan, and basically explored the city, do a food tour, and see Broadway/Off-Broadway shows. I was still at BNL when Sept 11 happened, so I remembered the first time I went back into the city after that (3 weeks later). Needless to say, that first visit after the event was quite emotional.

    Curious, Just who is your favorite Looney Tunes Director?

    Director? Who pays attention to such thing? :)

    I always like Fritz Freeling. I am not sure if he is one of the directors, but his work on Looney Tunes have always been hysterical.

    Zz.

  9. ZapperZ
    ZapperZ says:

    Would it be possible for you to divulge more on why you changed majors to physics during college?

    I think I joined the Physics Club after my first semester there (they let anyone in, whether you were a physics major or not). So I got to talk to other more senior students, and also some faculty members during our informal get-together. Learning what they were doing and learning more about what “physics” was, to me, was an eye-opener. I realized that I could study a lot more stuff in physics than I can with nuclear engineering.

    That’s what made switched.

    Zz.

  10. Monique
    Monique says:

    This attention to such detail and the obsessive need to maintain the integrity of the whole experience can be found all over the parks. Many of us Disney park fans love to discover such things.

    Thanks for sharing, that indeed is an interesting example.

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