Category Archives: News

New ways to Charge Solar Cells

Technion Researchers Find New Way to Charge Solar Cell Materials

Released: 11/30/2011 4:30 PM EST
Source: American Technion Society
See also: 
Newswise — Solar power must become more efficient and less expensive to compete with energy produced by fossil fuels. Silicon-based solar cells are the dominant technology in the field, but the widespread adoption of these cells has been slowed by their high costs. Solar cells that use inorganic nanocrystals or “quantum dots” could be a cheaper alternative, but they are generally less efficient at turning solar energy into electricity.
Technion-Israel Institute of Technology researchers have now found a new way to generate an electrical field inside the quantum dots, making them more suitable for building an energy-efficient nanocrystal solar cell.
In their report in the October 9 issue of Nature Materials, Professor Nir Tessler (of the Zisapel Nano-Electronics Center in the Technion Department of Electrical Engineering) and colleagues describe how they “tuned” the electrical properties of quantum dots before testing their capabilities in a model solar cell.
Nanocrystal or quantum dots “are promising materials for low-cost and high efficiency solar cells” due to their unusual electronic properties, Tessler said. For instance, the size of a quantum dot is uniquely correlated to its light absorption, so changing a dot’s size can maximize its ability to harvest light within a solar cell.
To live up to their promise, however, the dots must share electrons efficiently-a feat that has been difficult to control. The Technion study offers a new way to bring an electrical charge to the dots-each about one-millionth the size of the period at the end of this sentence.
Tessler and colleagues were able to generate strong electrical fields within the dots by capping them with two different organic molecules. The chemical groups that attach the molecules to the dots’ surface generate the electrical field, they show.
Tessler said the findings give researchers one more method of controlling the building blocks of nanoelectronics. The dots are produced in an optoelectronic “ink” solution, he noted, which could make them suitable for future applications in “the field of printed electronics that will produce sheets of light or sheets of solar cells.”
The researchers hope to combine these findings along with their previous experiments that mix different kinds of nanocrystals, to discover whether combining the two methods might lead to even more efficient energy production.
The Technion-Israel Institute of Technology is consistently ranked among the world’s leading science and technology universities. Home to three of Israel’s five winners of the Nobel Prize in science, the Technion commands a worldwide reputation for its pioneering work in computer science, nanotechnology, biotechnology, energy, water-resource management, medicine, drug development, and aerospace. Headquartered in New York City, the American Technion Society (ATS) promotes scientific and technological research and education at the Technion.

Israel as a “Global technological powerhouse” (FT)

Israel’s army of tech start-ups
By Tobias Buck
Extract from The Financial Times
Read full story here

When Aharon Zeevi Farkash enters the offices of his company south of Tel Aviv, he needs neither key nor code. As soon as he leaves the elevator, a camera captures his face and body shape, and feeds the information to a computer that recognises his features. The door unlocks.
Should the face recognition software fail, Mr Farkash will be prompted to speak a few words into a receiver. The computer will switch to voice recognition – and unlock the door.
If both technologies fail to make a positive identification, the only way to enter is with the permission of the receptionist sitting on the other side of the door.
“There is not one technology that will give you 100 per cent accuracy. Not face recognition, not voice recognition, and not a doorman either,” says Mr Farkash. The picture changes, however, once the technologies are bolted together, allowing one piece of the system to step in on the occasion that the other fails. “The technology transforms you into the key,” says Mr Farkash, the founder and chief executive of FST21, the company that developed the system.
The company, set up in 2007 and scheduled to break even at the end of 2012, encapsulates many of the trends and forces that have turned Israel into a global technology powerhouse. Its main product is a mix of technologies, combining hardware and software to suit a specific need. Such technological mash-ups have long been regarded as a speciality of Israeli’s high-tech entrepreneurs. Then there is the focus on security, another Israeli strength. Finally, and perhaps most importantly, the company bears the unmistakable stamp of Israel’s most successful and secretive technology incubator: the Israel Defence Forces’ Unit 8200.

Proctor & Gamble seeks out Israel NANO

Procter & Gamble is aiming for innovation

Procter & Gamble Israel Innovation Center director Lital Asher says P&G is interested in becoming stronger in life sciences.

Globes
30 November 11 13:58, Gali Weinreb

Wouldn’t it be nice and efficient if every time we brushed our teeth, our toothbrush told us if we had brushed well, how much plaque was on our teeth, and how many years we should expect to be able to keep our teeth, if we carry on the same way? It would be very nice, but how much would we be willing to pay for such a toothbrush?
“The secret is to bring such a technology to market, but to lower the price so that everyone could afford it,” says Procter & Gamble Israel Innovation Center director Lital Asher.
Asher will attempt to interest the Israeli life sciences industry in consumer products in a lecture that is part of the “Healthcare Technological Innovation” course, which will take place December 12-14 at the Tel Aviv University Faculty of Management, sponsored by the Israel Life Science Industry Organization, and organized by DFJ Tamir Fishman Ventures managing general partner Dr. Benny Zeevi.

Read the full story

NANO Engines Drive the Future

BGU: ‘Nano-engines’ can move forward, back
By JUDY SIEGEL-ITZKOVICH
11/28/2011 05:19
Full story at the Jerusalem Post.

Findings could aid cancer research, medicine and technology.

Tiny bits of proteins necessary for cells to divide have been found by Israeli and German scientists to have an astonishing ability to go into reverse as if they were car-like “nanoengines.”

According to a 13-page article just published in the online edition of the EMBO (European Molecular Biology Organization Journal) and due to be published in the December 14 print edition, the discovery could be vital for the understanding of biological motors during cell division, not only for basic cell science but also for cancer research and biologically inspired nanotechnology in medicine and industry.

The new discoveries indicate the nanometersized molecular machines are much more powerful and versatile than previously thought.

Scientists at Ben-Gurion University of the Negev in Beersheba who have been working with a group from George August University of Goettingen, Germany, made the discovery while working on motor proteins essential for cell division.

They found these “nanoengines” can drastically modify their speed and even switch direction when loaded with a cargo – something that was not realized until now.

Cell division is a key process in the development of organisms. During regular cell division, duplicated chromosomes of the mother cell are distributed into two daughter cells. This tightly regulated process is driven by specialized enzymes called motor proteins; prominent among them are the families of kinesins and dyneins. Until now, it was believed that each member of those families was structurally programmed for a defined directionality on its track, the microtubules of the cytoskeleton. One class of motors was believed to generate motion toward the cell poles and another toward the cell equator.

Medical hostility towards transgender patients

“Transgender patients still face hostility, belittlement and vast ignorance from the medical establishment”

Care of t...
“Transgender patients are still met with hostility, belittlement and vast ignorance by the medical establishment.” Thus said researchers during the 17th Annual Prof. Aaron Valero Memorial Seminar on Patient-Physician Relations. Prof. Aaron Valero was one of the founders of the Rappaport Faculty of Medicine at the Technion.
The seminar, which took place in the Faculty of Medicine, focused on a very unique community – people who turn to psychiatrists and surgeons despite being of sound mind and body. This is the community of transgender people – persons born into bodies that are not the “right body” for them. “Nature betrayed us,” in the words of Paola, a young transgender woman who spoke to the audience about her experiences and her coping with the medical system.
“We as doctors must understand who these people are, what their feelings are and what their expectations from us are,” said the moderator, Dr. Rabinovitch. “In contrast to a homosexual, who can begin to live his new life the moment he admits to his orientation or at the moment when he “comes out of the closet”, a transgender person needs medical assistance in realizing the physical change in his body to which he aspires. And we, physicians, do not always know how to “deal” with him, how to talk to him; is it a him or a her?”
Nora Greenberg, a gender specialist who consults to the transgender community, said that these people experience gender incongruence given that their gender identity does not match their bodies and their sexual organs. “This gap causes great distress, which impacts on the person’s life and prevents him from living a full life. The only way to relieve this distress is to expose the real gender emotions and live according to them. Since the body is an important part of their identity experience, and primarily their sexual identity experience, it is no wonder that many transgender people want to change it in order to acquire the characteristics of the gender with which they identify. To do this they require physicians and medicine.”
Ms. Greenberg said that it is very important that the physician address his transgender patient in language that matches the patient’s independent gender designation. “Ignoring the patient’s independent designation positions the physician and the patient on two sides of a power divide. This is an aggressive action that negates not only the patient’s gender identification feelings, but also destroys any chance for a therapeutic relationship based on mutual respect and trust. The person coming to us is someone who is uncomfortable in his present body – his body is essentially his problem. Therefore, as those who are going to treat this body and change it, we must be very sensitive in our discussions with the patient and the treatment itself. First of all, we must ask him which gender we should use to address him (male/female), and respect his answer. We must talk to the person – and not to his present body.”
Following the lecture by Ms. Greenberg, A., a young medical student who has just finished his sixth year of studies, came up to speak. He told his life story. “I have an older sister and a younger sister and we were always called “the girls.” This really bothered me but I did not understand why. In school a soccer club opened but the coach wouldn’t allow me to play – ‘it’s only for boys’, he said. At the age of 16, when my girlfriends talked about setting up a home, I felt somewhat uncomfortable. They didn’t understand why, and in reality, I also didn’t understand.
“Today I am 30 years old. At the age of 23 I heard for the first time the term transgender from a transgender person. Suddenly someone put into words what I had been feeling all my life – that I am not in the right body. It is immensely lonely to live without understanding, without having the words to describe what you feel, without being able to explain. This meeting changed everything.
“Today it is clear to me who I am. I did not need a doctor to agree with this diagnosis. But this discovery was just the beginning of the way. I gradually told my friends and family, and after the fact, it was clear that it would have been a lot easier for them to accept an announcement that I had cancer. The dissonance, the gap between my wonderful self-discovery and society’s reaction, was not easy.”
“And then – the medical procedures: a meeting with my family doctor, a psychiatrist, an endocrinologist. The surgical procedure. These meetings were very difficult – each doctor, each nurse and each medical secretary were sure that it was ok for them to ask every kind of question, invasive as it may be. “How did your parents react? How does your girlfriend feel about the surgery?” – these are questions that would never be asked in any other patient-medical staff encounter. There were also wonderful physicians along the way, but the antagonism, the ignorance and the voyeurism were very hard. These people did not understand how sensitive we are to our body – because it is our problem. If we were innocent souls, without bodies, we wouldn’t have any problem.”
“The medical community, in general, relates to these kinds of people as a curiosity,” said Ms. Greenberg. Correct relations between patients and their doctors require an entirely different kind of connection, the center of which is respect for the person – even if this is the middle of the nightshift in the Emergency Department. These people are not ill and are not disturbed – they come to us because they are suffering a dissonance (a gap) between their bodies and their identity. Our job is to help them on the physical level, without harming them.
“The present definition of the ‘problem’ of these people is Gender Identity Disorder,” said Ms. Greenberg. “I am happy to say that in the soon-to-appear next edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM), published by the American Psychiatric Association, the definition will be changed to Gender Dysphoria, with the definition of the disorder relating to the distress caused by the lack of sexual congruence, and not to the cross-gender gender identification itself.
“Transgender people have suffered a lot from the pathologization of their identity. Over the past few years, we are seeing a growing trend of de- pathologization, one of whose expressions is the above mentioned change in the DSM. In the past, medicine has tried to oversee the treatment of these people through conservative and rigid treatment models into which patients were supposed to fit. In the last few years, with the establishment of the transgender model with its many facets, a more open treatment approach has become accepted, with many options, and with the treatment being offered changing from patient to patient in response to their needs.
“In general, the historical process is moving in a positive direction: the perception whereby a person must prove that he is an ‘authentic’ transgender person is changing into an understanding that gender identification is not dichotomous (male or female, without any state of in-between) but rather a continuum with, at one end, pure femininity and at the other end, pure masculinity. No real person exists at either of these two extremes – we are all somewhere in between.
“Despite these positive developments, transgender patients still face hostility, belittlement and immense ignorance on the part of the medical establishment. The basic problem is the existing gender conformity, and the fact that most physicians belong to the ruling majority, that is, the cisgender population – people who are not transgender and identify with the gender into which they were born. Like many of the cisgender population, doctors also suffer largely from transphobia – hatred, disgust and fear of transgender persons or abound with the cis-normative approach, that is, the belief that the cisgender identity is natural, healthy and better than transgenderism and every divergence from it is a type of deviation.
“The stage most necessary on the way to change is the understanding by every doctor that he or she belongs to a social system. There is no purely individual person. Therefore, if the doctor belongs to the ruling group, the cisgender group, he must be aware of this, because his behavior is affected by this affiliation. In the next stage, he must be prepared to waive his power as a cisgender person, not his power and knowledge as a doctor – these are essential – but his feelings of superiority, of which he is usually unaware, which do not enable him to understand the patient as a whole and real person.”
In addition to Nora Greenberg and A., another two transgender people who underwent surgery to change gender and life their lives in line with the feelings of their authentic gender identity spoke: Paola, a psychology graduate, and Shamai, a rabbi and social activist, told the audience about their experiences with doctors.
The late Prof. Aaron Valero, a founder of the Rappaport Faculty of Medicine, was born in Jerusalem in 1913 and died 11 years ago. After completing his studies at Gymnasia Yerushalyim (1932), he went to Birmingham, England to study medicine. With the outbreak of World War II he returned to Israel and then served with the British Army in the Persian Gulf. At the end of the war he returned to Israel, moved to Haifa and worked at Poriya Hospital and Rambam Hospital where he set up the Department of Internal Medicine.
Following the decision to establish a medical school at the Technion, Prof. Valero founded the first course “Introduction to Internal Medicine – Physical Diagnosis”, and he was the first to teach the course in reading ECGs. Prof. Rosalie Bar said that Prof. Valero “was an outstanding doctor, an exceptional clinician, introverted and modest, who ran his department primarily by being a role model. He was an exemplar of gentlemanly patient-physician relations, as he had been taught in Birmingham.”

Scientific Truth Won

Technion celebrates the Nobel Prize with Prof. Danny Shechtman
Technion President: Scientific Truth Won



The whole of the Technion celebrated last weekend with Nobel laureate, Distinguished Prof. Danny Shechtman, who leaves next week for Stockholm for the award ceremony. “Our delight is not just because one of our own won the world’s most esteemed prize but, rather, because scientific truth won, said Technion President, Prof. Peretz Lavie.

The Swedish ambassador to Israel, Elinor Hammarskjöld, in her talk also spoke of Prof. Shechtman’s firm stand for many years against the opinion of the entire scientific world regarding his discovery. “We admire not only the discovery of quasicrystals, but also your scientific way,” she told the Nobel laureate.

Haifa Mayor, Yona Yahav (Attorney), made Prof. Shechtman an honorary citizen of Haifa. “The good news is that the decision was a unanimous one by the City Council. The not-so-good news is that the decision does not exempt you from having to pay city taxes,” said the Mayor to the laughing listeners.

The Nobel winner for Chemistry in 2004, Distinguished Prof. Aaron Ciechanover of the Technion’s Rappaport Faculty of Medicine, said to Prof. Danny Shechtman: “Welcome to the club. Today you are joining an exceptional group.” Regarding the winning of the Nobel Prize for Chemistry thus far by four Israeli scientists (Professors Avram Hershko, Ada Yonat, Danny Shechtman and himself), Prof. Ciechanover said, “Chemistry today is a much broader concept than the narrow one that up to now has been generally recognized.”

Prof. Shechtman thanked the large audience: “I usually do not get emotional,” he said. “This evening I am overwhelmed. I feel a lot of warmth here. I feel good standing next to the lectern. Here is where I began teaching the course I founded 25 years ago in order to encourage technological entrepreneurship in the state of Israel. I am a Zionist and I want this country to be a good place to live. From here I call for good education for everyone because without good education there will be no revitalization.”

He revealed that he and Mayor Yona Yahav have decided to promote an initiative for scientific education for preschool children in Haifa. “I will do all I can to promote education in the state of Israel,” he promised.

The ceremony moderator was the Dean of the Faculty of Materials Engineering at the Technion, Prof. Wayne Kaplan.

Technion & Beyond: President Peretz Lavie, cRAzYEnginEerS

[Extracts]
Born in Petach Tikva, Prof. Peretz Lavie graduated from Tel Aviv University with a BA in Psychology and Statistics and completed his PhD studies in Physiological Psychology at the University of Florida in 1974. Following this Professor Lavie was a post-doctoral fellow at the Department of Psychiatry at the University of California in San Diego.
In 1975 Professor Lavie joined the Technion as a lecturer and there has been no looking back for him ever since. He is also a member of the American Sleep Research Society and a member and was the Vice-President of the European Sleep Research Society.
CE: Could you tell us about exciting engineering research projects going on across Technion?
Prof. Lavie: It is difficult to pick just a few engineering projects currently performed at Technion because there are so many. However, the following are two of the projects that stand out as novel and imaginative with a potential for a technological breakthrough. The first is autonomous indoor navigation for micro air vehicles (MAVs). Researchers from the Faculties of Aerospace Engineering and Computer Science are meeting the challenge of autonomous, indoor navigation of rotary-wing vehicles (helicopters). The operation of MAVs can be life-saving in scenarios such as search-and-rescue, surveillance, and biological/chemical agent detection. Indoor flying is complicated by two significant unknowns: There is no a priori knowledge of the terrain and there is no external positioning aid such as GPS. Any collision between an MAV and another object can easily result in an immediate mission abort. The researchers in the Technion Autonomous Systems Program are writing the autonomous navigation algorithms that take the information provided by the laser scanner on the helicopter, creating, in effect, the ideal flight path as it proceeds.  The second project is the Nanoscale Artificial Nose. Wouldn’t it be revolutionary if doctors could sniff out cancer? Prof. Hossam Haick of the Wolfson Faculty of Chemical Engineering is developing the NA-NOSE – an artificial nose that will be able to detect cancer and other diseases at the early stages. The patient simply exhales into the non-invasive device and with an array of nano sensors the device will do its life-saving work. The researchers have shown that this “electronic nose” can distinguish between molecules found in the breath of cancer patients and those of healthy people.
CE: What is your vision for Technion University?
Prof. Lavie: A science and technology research university, among the world’s top dedicated to the creation of knowledge and the development of human capital and leadership, for the advancement of the State of Israel and all humanity.
CE What are the key factors that set Technion apart from other Universities in the world?
Prof. Lavie: Technion was founded in 1912 – this year we celebrate our cornerstone centennial – 36 years before the birth of the State of Israel in 1948, and is inextricably linked to the development and growth of the country, its flourishing economy and technological prowess. The key factor that sets Technion apart from other universities in the world is the unparalleled contribution of Technion graduates to the Israeli economy. Technion graduates have literally changed the economy of Israel from an agriculture-based economy, renowned for Jaffa oranges, to an economy based on high technology. 75% of Technion graduates are employed in the High-Tech sector, many of them in managerial and R&D positions. 42% have been involved with a start-up company and 25% hold at least one patent after graduation. Technion graduates founded, or run, 59 of the 121 Israeli companies registered on NASDAQ and run 11 of the 12 largest export companies in Israel. I do not believe that there are other examples where a single university has had such a profound impact on the economy of a country. Add to this our three Nobel Laureates in Chemistry and several landmark research achievements and you have what makes the Technion unique.

Technion & Beyond: President Peretz Lavie, cRAzYEnginEerS

[Extracts]
Born in Petach Tikva, Prof. Peretz Lavie graduated from Tel Aviv University with a BA in Psychology and Statistics and completed his PhD studies in Physiological Psychology at the University of Florida in 1974. Following this Professor Lavie was a post-doctoral fellow at the Department of Psychiatry at the University of California in San Diego.
In 1975 Professor Lavie joined the Technion as a lecturer and there has been no looking back for him ever since. He is also a member of the American Sleep Research Society and a member and was the Vice-President of the European Sleep Research Society.
CE: Could you tell us about exciting engineering research projects going on across Technion?
Prof. Lavie: It is difficult to pick just a few engineering projects currently performed at Technion because there are so many. However, the following are two of the projects that stand out as novel and imaginative with a potential for a technological breakthrough. The first is autonomous indoor navigation for micro air vehicles (MAVs). Researchers from the Faculties of Aerospace Engineering and Computer Science are meeting the challenge of autonomous, indoor navigation of rotary-wing vehicles (helicopters). The operation of MAVs can be life-saving in scenarios such as search-and-rescue, surveillance, and biological/chemical agent detection. Indoor flying is complicated by two significant unknowns: There is no a priori knowledge of the terrain and there is no external positioning aid such as GPS. Any collision between an MAV and another object can easily result in an immediate mission abort. The researchers in the Technion Autonomous Systems Program are writing the autonomous navigation algorithms that take the information provided by the laser scanner on the helicopter, creating, in effect, the ideal flight path as it proceeds.  The second project is the Nanoscale Artificial Nose. Wouldn’t it be revolutionary if doctors could sniff out cancer? Prof. Hossam Haick of the Wolfson Faculty of Chemical Engineering is developing the NA-NOSE – an artificial nose that will be able to detect cancer and other diseases at the early stages. The patient simply exhales into the non-invasive device and with an array of nano sensors the device will do its life-saving work. The researchers have shown that this “electronic nose” can distinguish between molecules found in the breath of cancer patients and those of healthy people.
CE: What is your vision for Technion University?
Prof. Lavie: A science and technology research university, among the world’s top dedicated to the creation of knowledge and the development of human capital and leadership, for the advancement of the State of Israel and all humanity.
CE What are the key factors that set Technion apart from other Universities in the world?
Prof. Lavie: Technion was founded in 1912 – this year we celebrate our cornerstone centennial – 36 years before the birth of the State of Israel in 1948, and is inextricably linked to the development and growth of the country, its flourishing economy and technological prowess. The key factor that sets Technion apart from other universities in the world is the unparalleled contribution of Technion graduates to the Israeli economy. Technion graduates have literally changed the economy of Israel from an agriculture-based economy, renowned for Jaffa oranges, to an economy based on high technology. 75% of Technion graduates are employed in the High-Tech sector, many of them in managerial and R&D positions. 42% have been involved with a start-up company and 25% hold at least one patent after graduation. Technion graduates founded, or run, 59 of the 121 Israeli companies registered on NASDAQ and run 11 of the 12 largest export companies in Israel. I do not believe that there are other examples where a single university has had such a profound impact on the economy of a country. Add to this our three Nobel Laureates in Chemistry and several landmark research achievements and you have what makes the Technion unique.

Are Americans Safe to Travel?

TSA Makes The Right Security Decisions … For The Wrong Reasons

November 28, 2011 
By: Alan Kirschenbaum
What we are witnessing at the US Transportation Security Administration (TSA) these days is typical of all organizations that, for survival purposes, are adapting their goals to the exigencies of external pressures.
In this case, TSA has given in to a combination of passenger backlash and potential loss of income for the airline industry. Part of this adaptive process still hinges on viewing airports as assembly lines where passengers are cogs in the manufacturing process. Emphasis still remains on developing more clever software to predict and ameliorate flow patterns and utilizing smart technology to speed up security checks.
It is therefore not surprising that some marginal changes are being instituted in security rules and regulations with the purpose of speeding up the flow of “units” by reducing “friction” at check points. This includes the newly introduced VIP treatment for “sanitized” passengers. But, for the first time, the concept of allowing TSA agents to have discretion in making decisions appears to have been taken on board.

Alan (Avi) Kirschenbaum is the initiator and coordinator of The BEMOSA Consortium, a European-wide research project aimed at improving security at airports. A Professor of Organizational Sociology and Disaster Management at the Faculty of Industrial Engineering and Management, Technion Israel Institue of Technology, Kirschenbaum is a world renown expert in the field of disaster management who has authored several acclaimed books and numerous articles. He lectures widely and is an advisor to governments, public institutions and security related companies.

A Whole New Matter: Science of Quasicrystals Today

A whole new matter

Technion Distinguished Prof. Mordechai Segev
Quasiperiodic materials have unique electrical, optical, and mechanical properties. While bulk quasicrystals tend to be brittle, surface coatings benefit from the hardness of quasicrystals. Alloys containing quasicrystalline nanoparticles are stronger and lighter than other materials. Applications have included cookware, maraging stainless steel, surgical tools, missile skins and a storage medium for hydrogen.

The Technion quasicrystal legacy continues with research into photonic quasicrystals spearheaded by Distinguished Prof. Mordechai (Moti) Segev. Segev’s team was the first
to demonstrate nonlinear photonic quasicrystals: dielectric materials whose refractive index varies in a quasiperiodic fashion, and in addition change their properties when the light intensity is increased. 

In 2011, Segev’s team reported a direct experimental observation that transport in photonic
quasicrystals is enhanced by virtue of disorder.