Posts tagged Colorado Boulder
Wrap your mind around this! photo origami CU Boulder
Aug 27th
wins $2 million NSF grant
The art of origami has inspired children and artists all over the world because of the amazing objects that can be created by folding a simple piece of paper.
Now an engineering research team at the University of Colorado Boulder has won a $2 million grant from the National Science Foundation to develop a light-controlled approach for “self-assembly” mechanisms in advanced devices based on the same principles.
Known as “photo origami,” the idea is supported by NSF’s Emerging Frontiers in Research and Innovation program, which supports interdisciplinary teams working on rapidly advancing frontiers of fundamental engineering research.
CU-Boulder associate professor of mechanical engineering Jerry Qi will lead the team developing the photo origami technique. Collaborators will include CU faculty Robert McLeod of electrical engineering, Kurt Maute of aerospace engineering sciences and Elisabeth “Beth” Stade of mathematics, along with Patrick Mather of Syracuse University.
The ability to transform a flat polymer sheet into a sophisticated, mechanically robust 3-D structure will enable new approaches to manufacturing and design of devices from the microscopic to centimeter scales, according to the team. Examples include using extremely low-weight, high-strength materials to create micro-electromechanical systems with complicated 3-D architectures that can be used for microscopic sensors such as antennas or microphones, and miniature robotic devices for environmental monitoring.
Present barriers to the development of folding and unfolding mechanisms stem from the lack of understanding of scaling laws that allow researchers to generalize results obtained at various size scales, the inability to easily cause matter to “reorient” itself to achieve the desired folding patterns, and challenges in automated, sequential folding.
To overcome these challenges, the CU team will make use of recent fundamental advances in the control of polymer architecture through light-triggered chemical reactions.
“One has to accurately control how much deformation a material should have in order to obtain a precise folding angle and to determine where to fold or stop folding in order to avoid interference in the folding path and form the desired structure,” said McLeod, who will use the interaction of light with material deformation to develop optical waveguide transistors.
In this new form of logic circuit, light triggers the deformation of a soft polymer, which in turn switches the light on or off. In this way, the optical waveguide transistor will enable a structure to be pre-programmed with a folding pattern through a sequential set of switching events controlled by the shape of an origami sheet.
In recent years, CU researchers and their collaborators have made significant progress in using light to control and alter the structure of a polymer. They are able to both bend and stiffen polymer structures and to develop new, soft, shape-memory composite materials through photo-initiation techniques. Shape-memory composites are “smart” materials that have the ability to return from a temporary, deformed shape to their original shape when induced by a trigger.
In addition, the team will work with the local school district to provide research and educational opportunities for K-12 students and teachers.
Only 2 % of students in CU dorms eligible for concealed weapons permit
Aug 16th
for weapons in university housing
The University of Colorado Boulder today announced it is amending housing contracts to ask students who live in undergraduate residence halls and hold a Colorado concealed carry permit, or CCP, to forgo bringing a handgun to campus. The campus also will accommodate those who hold a CCP in a graduate student housing complex off the main campus, provided the permit holders store their weapon in a safe within their dwelling when they are not carrying it.
The university also is asking residence advisers and faculty who live in university housing to sign the same housing agreement as a condition of their residence in these facilities.
The actions follow a ruling by the Colorado Supreme Court on March 5, which allows individuals with state-issued concealed carry permits to carry handguns on university or college properties. The University of Colorado Board of Regents last spring delegated the authority to the chancellors of CU-Boulder and CU-Colorado Springs to create a process to implement the Colorado Supreme Court ruling in the campus residence environment.
“I believe we have taken reasonable steps to adhere to the ruling of the Colorado Supreme Court, while balancing that with the priority of providing a safe environment for our students, faculty and staff,” said CU-Boulder Chancellor Philip P. DiStefano.
The approach would only affect, potentially, a very small number of individuals. An analysis by the University of Colorado shows that 0.6 percent of the faculty, staff and students on campus possess a CCP. A full 96 percent of CU-Boulder undergraduate students living in the residence halls are under the age of 21, and are thus ineligible to have a CCP. Of the 4 percent of eligible students, about half living on campus are CU Resident Advisers, or “RAs,” who as CU employees would not be permitted to live in undergraduate halls and possess a CCP.
Residence hall students who have a concealed carry permit or who obtain a concealed carry permit under Colorado law during the housing contract period may seek to be relocated to a University Apartment (if space is available) or be released from the residence hall contract without financial penalty.
Among the requirements for Colorado concealed carry permits are that the holder must be at least 21 years of age, complete an FBI background check, and have either previous military or police experience or proof of completion of a firearms training course.
Residence hall students may still store weapons at the University of Colorado Police Department on campus, which is open and available for drop off and pick up of weapons, 24 hours a day, seven days a week.
CU-Boulder will continue to follow the CU Board of Regents policy that prevents the open display of weapons including guns, explosives and knives on campus. Only law enforcement officials who display their badges are allowed to openly display weapons while on campus.
Under concealed carry, anyone with a permit may carry a concealed handgun on campus generally and into CU buildings, with the exception of Folsom Field and any other ticketed public performance venue. The purchase of a ticket to a CU public performance constitutes an agreement with the university to not carry a concealed weapon, even as a CCP holder, into the venue.
Students begin moving into CU-Boulder residence halls on Tuesday, Aug. 21, and classes begin for the semester on Aug. 27.
CU potty project gets a “download” of green
Aug 14th
‘Reinvent the Toilet’ grant from Gates Foundation
An interdisciplinary team of student and faculty engineers from the University of Colorado Boulder has won a grant from the Bill and Melinda Gates Foundation for its proposal to develop a solar-biochar toilet for use in developing countries throughout the world.
The grant is part of the Reinvent the Toilet Challenge, or RTTC, initiated by the Gates Foundation to address a sanitation challenge affecting nearly 40 percent of the world’s population.
CU-Boulder, which was awarded one of four grants in the second round announced today, will receive nearly $780,000 from the Gates Foundation over a 16-month period starting Sept. 1. CU joins last year’s grantees Caltech and Stanford as the only U.S. universities to receive an RTTC award.
Environmental engineering professors Karl Linden and R. Scott Summers will join with chemical and biological engineering professor Al Weimer on the project.
Biochar is a highly porous charcoal made from organic waste. The idea proposed by the CU team involves using concentrated sunlight delivered through a bundle of fiber-optic cables to heat and decompose toilet waste for reuse in improving agricultural soils.
“This project integrates areas of expertise at CU in solar-thermal processes, disinfection and biochar that would not typically work together and creates a great team to tackle such a complex and important problem as sustainable sanitation solutions in developing countries,” said Linden, who is the principal investigator on the project.
Environmental engineering graduate student Ryan Mahoney and postdoctoral researcher Tesfa Yacob, who received his doctorate in civil engineering from CU-Boulder in May, along with Richard “Chip” Fisher, a professional research assistant in Weimer’s chemical engineering group, also will be involved. Two expert consultants round out the team, one focusing on solar-thermal design and one on sanitation and hygiene in developing communities.
A preliminary analysis indicates that a household-sized system for a family of four could be developed at a cost of 5 to 10 cents per person per day. An intermediate-scale system for community facilities also will be evaluated as part of the grant.
Linden and Summers are working on other environmental engineering projects for developing communities, including investigating hydrothermal biochar production and low-cost water filtration and treatment technologies. Weimer will add expertise in the area of solar-thermal processing and reactor design, which he has tested extensively for the development of alternative fuels.
“This project is also very student-driven,” said Linden. “Students with classroom and field-based experiences in our Engineering for Developing Communities program have provided some excellent ideas, expertise and enthusiasm to make this project possible.”
Environmental engineering doctoral students Josh Kearns, Kyle Shimabaku and Sara Beck are also contributing to the project.