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Princeton University News
3D Holography Integrated Glasses Could Unlock Mixed Reality
PRINCETON, N.J., May 2, 2024 — Holographic images have real depth due to their three-dimensional shape, whereas monitors can only simulate depth on a 2D screen. Because humans perceive the world in three dimensions, holographic images could be integrated seamlessly into the normal view of the everyday world. With this in mind, researchers from Princeton University and Facebook creator Meta are working towards mixing the real and virtual worlds using high-definition 3D holographic images. The team has created a small
Perovskite Cell, Test Method Set High Bar for Advancing Technology
PRINCETON, N.J., June 27, 2022 — Researchers at Princeton University have developed a perovskite solar cell device that can perform above industry standards, maintaining operation for approximately 30 years — compared to the widely used 20-year threshold for solar cell...
Researchers Devise Method to Observe Atomic Interactions, Quantum Mechanics
PRINCETON, N.J., Nov. 12, 2020 — Researchers from Princeton University have formulated a method to control and measure atoms that are indistinguishable when observed with an optical lens. The work allows the researchers to observe atomic interactions and quantum mechanical...
Deep Learning Enables Real-Time Imaging Around Corners
STANFORD, Calif., Jan. 21, 2020 — A team of U.S. researchers has created a laser-based system able to image around corners in real time. With further development, the system may allow self-driving cars to look around parked cars or busy intersections to see hazards or pedestrians....
New Rules Reveal How an Object’s Scale Affects Its Interaction with Light
PRINCETON, N.J., Jan. 14, 2020 — Princeton researchers have uncovered rules pertaining to how objects absorb and emit light. Their discovery addresses how the scale of an object affects the way it interacts with light. The new rules will tell scientists how much infrared (IR) light...
Silicon Quantum Bits Communicate over Relatively Long Distances
PRINCETON, N.J., Dec. 26, 2019 — A Princeton University research team has shown that silicon quantum bits (qubits), mediated by a microwave photon, can interact even when spaced relatively far apart on a computer chip. The ability to transmit messages across relatively long...
High-Speed 3D Inspection with Liquid Lenses
Sep 23, 2019 — The concept of liquid lenses, which involves controlling the shape of a liquid to alter the properties of a lens, is not new. The human eye uses this concept every day as it focuses on objects near and far. The ciliary body of the human eye contains...
Terahertz Imaging System on a Chip Offers Speed and Portability
PRINCETON, N.J., July 29, 2019 — An imaging system developed at Princeton University uses lasers small enough to fit on a microchip, and emits and detects electromagnetic radiation at terahertz (THz) frequencies. The new system, which is based on a semiconductor design, uses a...
Nanocavities Increase LED Display Output, Contrast
PRINCETON, N.J., Oct. 2, 2014 — Nanocavities can help light escape from LEDs to produce brighter, clearer and more efficient displays. Researchers at Princeton University reported increasing the efficiency of green organic LEDs (OLEDs) to 60 percent — 57 percent higher than...
Photons Act Like Liquid, Crystal in Experiment
PRINCETON, N.J., Sept. 10, 2014 — A system for "crystallizing" photons could help answer fundamental questions about quantum physics.
Quantum Cascade Laser Tests Blood Sugar
PRINCETON, N.J., Aug. 25, 2014 — A new laser system could eliminate the need for conventional finger-prick tests for diabetics. A team from Princeton University has developed the new technique, which measures blood sugar by directing an IR quantum cascade laser at a person’s...
Imaging Shows Bubbles Could Make Energy-Efficient Nanoparticles
PRINCETON, N.J., Aug. 20, 2014 — High-speed cameras and UV-sensitive materials are helping advance understanding of bubbles — which could mean big things for nanoparticles. In fact, a system in which bubbles mix liquids is an energy-efficient route toward producing...
Technique Could Simplify Photonic Crystal Formation
PRINCETON, N.J., and NEW YORK, July 25, 2014 — A new method could allow scientists to custom-grow defect-free photonic crystals. A team from Princeton University and Columbia University created computer models demonstrating the technique, adding precisely sized chains of polymers to a colloidal...
Solar Cell Converts CO2 into Useful Acid
PRINCETON, N.J., July 3, 2014 — Researchers at Princeton University have found a way to convert carbon dioxide into a potential fuel with record efficiency. The study, lead by chemistry professor Dr. Andrew Bocarsly, involved converting CO2 and water into formic acid using an...
Photocatalytic Approach Produces New Drug Candidates
PRINCETON, N.J., June 25, 2014 — Light and nickel share a unique bond as chemical catalysts for potential new drugs. Princeton University chemists studying photoredox catalysis and nickel catalysis have discovered that bringing the two processes together enables reactions that...
More Is Less: Increased Voltage Switches Off Microlasers
VIENNA, June 18, 2014 — Lasers that switch off when their pump power is increased could one day make viable optical switches and logic circuits. Researchers at the Vienna University of Technology, led by professor Stefan Rotter, have demonstrated the phenomenon using a...
4 Photonics Projects Get Defense Funding
WASHINGTON, June 3, 2014 — The U.S. Department of Defense has awarded funding totaling $28.3 million for four photonics graduate research projects under its Multidisciplinary University Research Initiative (MURI). Brief summaries of the projects follow. For further...
Boston Micromachines Awarded NASA Imaging Contract
CAMBRIDGE, Mass., May 23, 2013 — Boston Micromachines Corp. has received a $500,000 contract from NASA to advance its MEMS-based deformable mirror technology for space-based imaging.
Metallic “sandwich” boosts solar cell efficiency
PRINCETON, N.J. – A new combination of metal and plastic increases the efficiency of organic solar cells by 175 percent, making them more competitive with conventional silicon photovoltaics. The nanomesh structure, developed at Princeton University, traps and absorbs...
A Black Hole for Light
PRINCETON, N.J., Dec. 10, 2012 — A nanostructured “sandwich” of semiconductor material that collects and traps light has nearly tripled the efficiency of organic solar cells.
A New Wrinkle in Solar Panel Power
PRINCETON, N.J., May 3, 2012 — New flexible, low-cost solar cells, inspired by the microscopic folds found on the surface of a leaf, offer a 47 percent increase in electricity generation.
Solar concentration without mirrors
Mar 1, 2012 — Mirror-free thermophotovoltaic devices could someday make a much simpler and less expensive system to concentrate sunlight. The goal is to prevent heat from escaping the thermoelectric material by using a photonic crystal – essentially, an...
Blocked holes boost light on the nanoscale
PRINCETON, N.J. – Capping a hole should block light transmission through that hole, right? Not on the nanoscale. In fact, placing a metal cap over a small hole in a metal film does not stop light from passing through the hole, but rather enhances its transmission....
To seek out the soft glow of new life and new civilizations
Jan 1, 2012 — The search for life on alien planets focuses largely on radio signals – on keeping an ear out for transmissions from far-off civilizations. But what if we kept an eye out instead, in the hope that the aliens literally have left a light on? If...
Solar Concentration Without Mirrors
CAMBRIDGE, Mass., Dec. 7, 2011 — By employing a photonic crystal to keep heat from escaping, thermophotovoltaic devices can concentrate sunlight without mirrors, potentially making thermophotovoltaics much simpler and less expensive because they can be made using standard...
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May 2024
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