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Biweekly magazine of the Eindhoven University of Technology
17 Oktober 2013 | year 56
For the latest news: www.cursor.tue.nl/en and follow @TUeCursor_news on
Nano-crossings next step towards quantum computer
More news on www.cursor.tue.nl/en
Monday 15 October 2013 - TU/e researchers of Photonics and Semiconductor Nanophysics (PSN) led by prof.dr. Erik Bakker have managed to create crossing nanowires from the material indium antimonide. They and their Delft colleagues announced their findings in an article that was published online on Nature Nanotechnology last Sunday. The nanowires might allow for the realization of a quantum computer based on Majorana particles. The new, crossing nanowires are a major step forward for the Delft-Eindhoven team. “This gives us a major advantage compared to other groups looking to confirm the existence of the Majorana particle”, says Erik Dekkers in newspaper NRC, which dedicated half a page to PSN’s research on Monday.
“Op mijn afscheidsreceptie had ik al spijt” Henk Janssen
zittende kont Henk heeft geen
PB | Mens
17 oktober 2013
Solar Team Eindhov World Solar Challen en wins ge Sunday 13 October
2013 - Solar Team Eindh oven (STE) has won the of the World Solar Challe Cruiser Category nge with their four-pers on solar car Stella. The announced in Adelaide news was , Australia on Sunday. Stella finished on Friday, 11 October at 1.03pm ‘Da rwin Time’. It took them and fourteen minutes to forty hours travel three thousand kilo meters through Australia with 3.2 passengers on . STE raced average, and an averag e speed of 72 km/h - bu 120 km/h were registered t top speeds of . After having finished in Adelaide, a judging panel evaluated Stella for com user-friendliness, and int fort, egrated innovations, but also trunk space and parallel parking. The fac t Stella is licensed in the Netherlands scored STE extra points as well. Read more on pages 24 -25
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Clmn
and tuecursor on
Jan Fransoo new dean Graduate School Friday 11 October - Prof.dr.ir. Jan Fransoo has been appointed as the new dean of the TU/e Graduate School. He will be succeeding prof.dr. Hans Niemantsverdriet, who held the position for a short time only. Niemantsverdriet will now focus on the further development of his company Syngaschem. The Graduate School is meant to streamline collaboration between the various departments concerning post-bachelor education. TU/e expects the Graduate School to help the international image of the university as well.
Jan Franso
o
Fransoo is part of the TU/e Capacity Group Operations, Planning, Accounting & Control (OPAC). Recently, their group conducted several major logistic jobs for the government, including jobs at the Port of Rotterdam and Schiphol Airport.
Secrets of self-assembly unraveled Tuesday 8 October 2013 - TU/e researchers have managed to describe the conditions under which specific molecules can clump together and form a useful material. The model for this self-assembly may be used in the production of plastic solar cells, they state in an article that was published on the website of PNAS magazine. The first author is doctoral candidate Peter Korevaar from the chemistry group Macromolecular and Organic Chemistry. He worked with researchers of the Computational Biology Group (Biomedical Engineering), and the Institute of Complex Molecular Systems (ICMS). In their publication, the researchers demonstrate
how their model works for an assembly process of two molecules that form a material similar to that what’s used for plastic solar cells.
Source of happiness
Recently, I stumbled across ‘The Happy Page’ on Facebook. The page gives innovative and interesting definitions of happiness. For some, happiness is delicious food, while for others it might be spending time with family. No matter how rich or poor, young or old we are, we’re all looking for happiness. Last Friday I turned 23. Many people feel sad of growing older. But for me every birthday brings me happiness. I’m always looking forward to what life has in store for me next. Apart from my birthday, October is also the month of Durga Puja, an auspicious Hindu festival celebrated in eastern India. During the festival, cities are decorated and people go around the city in new dresses enjoying themselves.
Since I’m working on my MSc at TU/e, I know it’s not feasible to go back to India right now. This year I found my happiness celebrating the festival differently, here in Europe. I met so many people who, like me, accept the situation they’re in and find happiness in what’s available to them now. I spent Durga Puja in London, visiting the city’s highlights. And guess what? It made me happy, even though I had been here at least five times before! It is a challenge to adapt to a different culture, but it’s an even bigger challenge to be away from your own. All international students struggle with this test of patience and acceptance. Many get bored, depressed even. But I have a quote for The Happy Page: happiness is finding happiness in what you have, wherever you are!
Bipashyee Ghosh of Innovatio, Graduate student n Sciences
24 | Focus
17 Oktober 2013
Solar-po
Text | Tom Jeltes Photos | Bart van Overbeeke Illustration | Sandor Paulus Take some twenty students from different Departments, eighteen months to design and build a solar-powered family car and take part in a race across Australia. The plan was ambitious and the result was magnificent. Last week Solar Team Eindhoven (STE) won the Cruiser class of the World Solar Challenge 2013 with Stella.
Three thousand kilometers in six days, purely on solar energy topped up with merely 64 kWh (the equivalent of seven liters of gasoline) from the grid. In a car holding three passengers on average and featuring a spacious boot. Excellent publicity for electric transport and a welcome promotion for TU/e. Cursor reported on the race from a distance via our website and social media. One more time we look back on the special events Down Under. STE team manager Lex Hoefsloot gives us a stageby-stage glimpse into the Australian adventure of his team.
Day 1 | Sunday October 6. Darwin - Katherine (321 km) Morning: Start of the World Solar Challenge 2013. We are starting from pole position after a perfect qualification ride on the circuit. The director of the Challenge and the public that has flocked in wish us lots of success in the outback. Despite some red traffic lights we manage to stay in first position for a long time, even before the cars from the faster Challenger class. Afternoon: The stage proceeds smoothly with blazing sunshine and an average speed of 75 kilometers per hour, exceeding our expectations! We set up camp in the middle of nowhere and Stella is positioned for static charging.
Day 2 | Monday October 7. Katherine - Tennant Creek (667 km) Up at 5 a.m. so as to position Stella ideally for the first rays of sun. An hour before the start a problem is detected in the communication between Stella and the following car. Soldering irons and spare parts are gathered from the cases one hour before departure to get the electronics functioning properly again. In the end this means driving without any wireless communication in the morning while in the bus the finishing touches are put to the resoldering of the connection. During the control stop the electronics are installed into the car again. Afternoon: German competitor Bochum overtakes Stella at a speed of around 3 kilometers per hour difference. Stella finally arrives in Tennant Creek in the afternoon after a record stage of 988 kilometer (on one battery charge). Average speed over 1000 kilometers: 70 kilometers per hour. Down behind Bochum: 8 minutes.
Day 3 | Tuesday October 8. Tennant Creek - Alice Springs (505 km) This promises to be a day of speeding, at an unexpected rate of 90 kilometers per hour. Stella takes off on a full battery pack at 90 km/h, with 505 km to go and a forecast of sunny skies. 4 passengers in the car, the backseat passengers playing a game of cards. It soon turns out that we will not empty the battery at this speed, so we raise the speed to 100 km/h. The truck and the bus indicate that they have trouble keeping up with this and may need to drop back a bit. As the battery still refuses to empty itself, we up the speed to 120 km/h: at full speed we overtake our German competitor, who is totally flabbergasted and finally disappears like a speck in the rearview mirror. In the end Stella arrives in Alice Springs in the afternoon with 4 passengers (there was only 1 person in the Australian car and 3 in the German car). Average speed: 97 km/h!
Focus | 25
See for more news www.cursor.tue.nl/en
owered triumphal tour Day 4 | Wednesday October 9. Alice Springs - Coober Pedy (678 km) After a perfect day 3 the atmosphere is good and the team can smell victory. Shortly after departure it appears that we should not rejoice too soon, though. One-third section of the solar panel does not switch on. After extensive radio contact with Stella the passengers are asked to open the electronics box in the boot from the backseat while driving. They find some burnt-out cables, so the strategy car asks them to take a photo of the cable work. After examination of the photo in the strategy car it is decided to fix the problem at the next control stop. Everybody is at the ready to make repairs proceed as swiftly as possible. Meanwhile the driver establishes that there is a noise emerging from the left front tire after having crossed a cattle grid. It is possible to drive on to the control stop. At the control stop, spare parts and tools are taken from the cases in no-time to replace the tire and repair the electronics. Thanks to the highly attuned teamwork, repairs are carried out smoothly and in as little as 15 minutes Stella is ready to continue towards Coober Pedy. At the end of the day Stella arrives just behind the Germans and the Australians. To add to the sadness of the day, a heavy gust of wind causes a hinge of the car to break off when the passengers are getting out.
Day 5 | Thursday October 10. Coober Pedy - Port Augusta (548 km) Strategists predict that today will be heavy. The weather forecast says that there will be heavy clouds and a 6 to 7 Beaufort wind blowing from the most unfavorable direction: south-southeast. Add to this the fact that it is one of the longest stretches without the possibility to recharge via the grid (it is a two-day stage, whereby contestants determine themselves where to set up camp, ed.). Competitor Bochum leaves at a speed of 80 km/h, along with the Australians. The weather gets worse as they approach the control stop. Stella manages to keep up an average speed of 70 km/h until Glendambo. In the afternoon Stella is lagging farther behind and it is decided to drive at 50 kilometers per hour because of the bad weather forecast. At 16:00 hours there is a ray of hope when it appears that Stella is around thirty minutes behind Bochum and one hour behind Sunswift (AUS). The GPS trackers indicate that they too are driving at 50 and 60 km/h respectively because they have also underestimated the weather. Somewhat disappointed that the day has not made them forget the problems encountered yesterday, the team sets up camp near Port Augusta. By means of a long slope and perfect positioning the team tries to reap the last few joules at the camp, but the clouds unfortunately cut that attempt short all too soon …
Day 6 | Friday October 11. Port Augusta - Adelaide
(303 km) The weather forecast for Friday brings new hope! A sunny sky and calm weather will be to our advantage. Stella has to cover a considerable 300 kilometers until the ‘Finish of Timing’ and must make good thirty minutes on the Germans and an hour on the Australians. It soon turns out that Bochum’s strategist has taken a big risk the day before: the battery is nearly empty because the Bochum team has driven much too fast. Thanks to a successful charging session (in the sun, ed.) Stella can start fast again in the morning, but is held up by slower teams, including Bochum. Due to busy traffic, overtaking proves to be difficult and it takes a long time until the convoy can accelerate to the speed of 75 kilometers per hour at which the finish will be reached. The team is leaving Bochum behind fast and the release follows at the Finish of Timing after an impeccable stage. Solar Team Eindhoven has won the dynamic section of the match!
The overall standings
The result in the Cruiser class of the World Solar Challenge is determined by four factors: the time within which the track between Darwin and Adelaide is covered, the number of recharging sessions from the grid, the average number of passengers transported, and the score in the ‘practicality test’ on the Saturday after the race. This last section involves an assessment of items such as seating comfort, ease of use and innovative devices. In addition, points can be scored for the space in the boot and the performance in backing the car into a parking space. The fact that Stella has a valid license plate number and is hence allowed to drive on public roads, also yielded the Solar Team Eindhoven some points. Via a rather complicated arithmetical model, all these items resulted in an overall score. Four of the eight participating teams reached the finish under their own steam. The scores:
team
total time
person-km
recharged
practicality
1. Solar Team Eindhoven 2. Hochschule Bochum (D) 3. UNSW (AUS) 4. University of Minnesota (VS)
40 hours 14 min 41 hours 38 min 38 hours 35 min 51 hours 41 min
9.093 km 6.484 km 3.022 km 5.454 km
64.0 kWh 63.5 kWh 64.0 kWh 64.0 kWh
88,3% 87.0% 70.7% 69.3%
Look at all the films of STE on www.youtube.com/SolarTeamEindhoven
overall standing 97.5% 93.9% 92.3% 79.2%
26 | People
17 Oktober 2013
And how are things in Nakskov? More and more TU/e students go abroad for their studies to follow courses, internships or a doctorate path. What is it like to find your way in a new country? Students tell their stories.
It smells very sweet in Nakskov. In the small Danish town (12,000 inhabitants) the smell of the Nordic Sugar sugar factory is in the air. The beet campaign has started halfway September and will last until early February. The rest of the year the factory is closed. Every morning I bike to the factory, watching the smoking chimneys. I work as an intern in the department of Innovation & Technology. My project concerns the mechanical properties of sugar beets, which are important for the transport, storage and cutting of the beets. Once a week I go into the fields with a spade to harvest beets for my experiments. A pleasant activity when the sun is shining, surely. Unfortunatley, Denmark has the same unpredictable weather as we do in the Netherlands. There isn’t much going on in Nakskov, and the town is in a remote area of Denmark. The town fell into decline after the shipyard and windmill factory shut down. There are still abandoned restaurants and bars scattered across town. I usually go to the gym about four times a week, which is a number of visits I don’t even get to in a month at E.S.Z.V. Oktopus. On weekends I spend my money (my salary’s pretty good for an internship) in bigger cities like Copenhagen and Hamburg. Denmark is a lot like the Netherlands. The landscape is identical, although the country doesn’t have as many cities. Most of Denmark is flat, but there’s a hilly area too, as well as people with challenging accents (comparable to the Limburg dialect in The Netherlands). The Danish language is hard, despite the similarities to Dutch. The pronunciation is especially difficult because all sounds are completely different. Fortunately English is widely spoken, and I know a few simple Danish words.
Sven v an B Chemicastudent elzen, l Engi (wearin neering g yell ow in th
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Would you also like to write an article about your time abroad? Please send an email to cursor@tue.nl.
Read more stories online: www.cursor.tue.nl/en
Life after TU/e
Name: Richard Vdovjak Place of Birth: Liptovsky Mikulas, Slovakia Date of Birth: 6 February, 1974 Studied at TU/e: Computer Science, PhD 2000-2005 SW Engineering Design (OOTI), PDeng 1998-2000 Current position: Project Leader & Senior Scientist at Philips Researc h Why did you choose to study at TU/e at the time? I had just completed my master’s degree in Informatics and wanted to extend my education in that field further. To be completely honest, I found out about TU/e by lucky coincidence when I noticed an announcement about an availabl e position on a bulletin board at my university back in Slovakia. It was a great experien ce and in retrospect, I’m really happy with the time and effort I invested in the lengthy process of obtaining my PDeng and PhD. And it definitely seems to have been worth it, career-wise. How did you find a job? Maybe I was lucky, but shortly after my PhD I had four job offers to choose from. I simply wanted to combine research challenges and real-world problems. I delibera tely chose a multinational with a global reach. I became a project leader in the fi eld of healthcare informatics. While I was well-prepared as far as informatics and compute r science were concerned, I admit I had to learn a lot about the clinical domain(s) we provide healthcare solutions for. Paying attention to cultural differences is very importa nt: I currently lead a cross-continental project between China and Europe and we’re likely to expand to Brazil next year. What are your plans for the future? I want to continue working on high-impact innovations for now. I enjoy being involved in busy multidisciplinary, multinational and multi-time zone projects and activities, but I also like to balance my hectic day job with my passion for photogr aphy, where I focus on long-term documentary projects devoted to people stories in remote areas of the world, and underprivileged minorities in Europe (some of my photos can be found at www.vdovjak.com). What happens to international students after they graduate from TU/e? Do they go job hunting in the Netherlands, pack their bags and explore the world, or return to their home countries? International TU/e graduates talk about their lives after TU/e.
What advice would you give current students? Try to base your research on real-life problems, e.g. by finding a PhD research program that’s (partly) funded by the industry. Make sure you know how to commun icate your research results as well as your dreams and passions clearly. As for countrie s, that’s for everyone to decide for themselves. My work takes me to different corners of the world, so I’m kind of a ‘world citizen’ and I like it that way for now. But the truth is that I love my homeland and I’m always very happy to return to see my family and to have a great time. After all, there is no place like home.
Research | 27
See for more news www.cursor.tue.nl/en
4 burning questions 1 ’s on What f your o r e ov ? the c ation t r e s dis
3
2
What person, technology, or device has been essential for your research?
Wh a peo t do yo ple u te a whe t par ll ties n abo ut y they a sk our rese arch ?
Javad Hazrati Marangalou | Biomedical Engineering
4 does How efit n e b ty socie ur work? yo from
Prediction of bone strength
1 | cover The sketch on the cover shows the arched trabecular bone 3 | essential The main technique used to predict patient specific patterns in the human femur and their resemblance to a crane-like structure. This was first identified by Von Meyer, an anatomist, and Culmann, a structural engineer, in 1860s. This biographical sketch shows the correlation between mechanics and medicine, and explains that the form and structure of bone constantly adapts to mechanical loading.
2 | parties
Osteoporosis is the most epidemic bone disease in elderly populations with enormous socioeconomic impact. Worldwide, one out of three women and one out of five men are at risk of an osteoporotic fracture during their lifetime. The first step towards preventing osteoporotic fractures is an accurate prediction of bone strength. The thesis focuses on patient specific prediction of bone strength using novel enhanced computational techniques.
bone strength is the finite element method (FEM). FEM is an advanced computer technique that can provide an approximate pattern of the stress distribution throughout the whole bone by subdividing the complex geometry into a finite number of elements of simple geometry. For this reason, FEM now plays an eminent role in bone biomechanics. The other important technique is computed tomography (CT) imaging. This is used to extract bone geometry and bone morphological parameters to build FE models.
4 | society benefit In this research project we were able to
propose enhanced approaches for improved bone strength predictions and, eventually, a better diagnosis of osteoporosis. These tools can also help to explore and understand bone tissue better.
Humberto Bocanegra Evans | Applied Physics
Droplets in turbulence
1 | cover The cover of the thesis shows the time evolution (at 5,000 3 | essential The tiny droplets we use emit very little light, so to frames per second) of a cloud of glowing droplets suspended in a turbulent flow. The recording is made by generating tiny droplets, which are lit by a laser pulse and recording them as they glow.
2 | parties Just as wet clothes are pushed towards the outside rim
during the spin cycle of your washing machine, droplets are ejected from tiny whirlpools in the flow. Turbulent flow is the ultimate mixer - think of stirring cream into coffee - however, when relatively heavy droplets are suspended in turbulent flow, the ejection of droplets from whirlpools creates voids and clusters. Using glowing droplets we study the behavior of droplets in turbulence.
visualize them we had to use an intensified high-speed camera, which uses a technology similar to that of night-vision goggles.
4 | society benefit
The clustering of droplets affects many natural and industrial processes. Clouds are a common example; rain will only fall once tiny droplets cluster, helped by turbulence. This process is still understood poorly. Other examples include fuel injection sprays in engines and inhaled drug deposition, as well as dispersion of pollutants in the atmosphere. This newly developed technique can be used to study these and many other particle-laden flows.
Yang Gao | Mechanical Engineering Diagnoses with magnetic pellets 1 | cover It’s a device that can generate 3D magnetic fields. We can 3 | essential change its strength and direction as we please, and we can make the fields spin or do even more complex movements. The magnetic fields are generated in eight (copper-colored) spools, which are connected to a soft-iron construction that centers the magnetic field.
2 | parties
I’ve developed an appliance for a biosensor that can detect proteins or cells in blood, saliva or urine. It allows us to identify serious illnesses such as cancer in an early stage, which increases the chance of full recovery. The particles we want to detect are captured with the help of magnetic particles coated in a protein layer. Using the varying magnetic fields, we move the pellets in such a way that they stick to the diseased proteins or cells very efficiently.
The device to generate the magnetic fields has been indispensible, of course. I developed and calculated it in the first year of my doctoral research. The people at the Equipment & Prototype Center of TU/e have been a huge help during the construction phase.
4 | society benefit Philips is currently developing a new bio-
sensor. The aim of my doctoral research was to improve that biosensor. But magnetic particles have been used in diagnostics for a while now. The Eindhoven Diagnostic Center is using the technique on a large scale already, for example.
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don’t TU/e and Eindhoven so you Cursor collects all events at , and nts eve ic dem aca and , athletic have to. Symposiums, films nl. You can notify ue. or.t urs w.c ww at all m parties: you can find the ail to website, please send an em e us of new events through our her will ine do so. Cursor Magaz cursor@tue.nl if you want to s. ing pen ing hap publish a selection of upcom
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Friday October, 21 .00h, Burgers, He rtogstraat 2 Eindh
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Simon
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Monday , Tuesday and Wednesdag 20.00h, Zwarte D oos, TU/e campus
Trance
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Simon (James McAvoy), a fine art auctioneer, teams up with a criminal gang to steal a Goya painting worth millions of dollars, but after suffering a blow to the head during he hid the painting the heist he awakens to discover he the gang’s leader . When physical threats and torture has no memory of where Fra (Rosario Dawson) nk (Vincent Cassel) hires hypnothefail to produce answers, As Elizabeth begin to delve into the darkest recesses of rapist Elizabeth Lamb truth, suggestion, s to unravel Simon’s broken subcon Simon’s psyche. and deceit begin to scious, the lines be tween blur. Language: English wi Entrance fee: 7, 50 th Dutch subtitles euro (Plazapas 3,50 euro on presen is valid), students pay tation of a student This card. www.dezwartedooalso applies to school students. s.nl/en
Le harpe c’est moi
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vin Hoe lang ties van houdt de zelfg studenteeerstejaars Werkebouwde wipco Want na n het voordat ze tuigbouwkund nstrucliefst de t worden ze, zov de Dommel in vertig groe a e pjes doe el is zeker. Maa llen? n dit jaa r r mee.
23 October,
Thursday 7 November,
oven
23 oktober, 12.40-13.35 uur, Blauwe Zaal,
Woensdag Auditorium
Complementaire geldsystemen tegen de
crisis
Als gevolg van de financiële crisis staat het gelds telsel ter discussie. De vraag is of complementaire geldsystemen, zoals Bitcoin de gevolgen van de crisis kunnen verzachtenLETS en de internetmunt . En snijdt de kritiek van hervormers op het rentestelsel hout? Hans Visser, emeritus hoogleraar Economie (VU), de hand van het werk van Lietaer en gaat de werkibespreekt die kritiek aan ng van complementaire geldvormen na. Entree: gratis, reserveer voor deze lezing als je zeker wilt zijn van een plaats http://www.kaartjesreserveren.nl/sg/ord er. aspx?project=40
20.30h, Gaslab, TU/e ca mpus
Eight compositions for the A space in which different harp, specially composed for this concert. A concert as a landscape harps are placed. In between: the audience. Godelieve Schrama and through which you wander, following harpist live electronics specialist Wouter Prune. Entrance fee: none for stu Make your reservation herdents, others pay 5 euros http://www.kaartjesres e: erveren.nl/sg/order.aspx? project=40