- Physics - Jul 22 Ultrasensitive sensor using N-doped graphene
- Physics - Jul 21 Borrowing from pastry chefs, engineers create nanolayered composites
- Physics - Jul 21 New journal for nanosafety
- Physics - Jul 21 World’s Most Sensitive Dark Matter Detector Completes Search
- Astronomy - Jul 20 First atmospheric study of Earth- sized exoplanets excites researchers
- Astronomy - Jul 20 Nature’s weirdest particles in the spotlight at Neutrino 2016 conference
- Astronomy - Jul 20 First atmospheric study of Earth- sized exoplanets using Hubble telescope
- Physics - Jul 20 New Yale- developed device lengthens the life of quantum information
- Physics - Jul 19 Making for space
- Life Sciences - Jul 19 Appointments at EPFL
- Physics - Jul 19 Weird quantum effects, even over hundreds of miles
- Astronomy - Jul 18 What lies beneath
- Chemistry - Jul 18 A battery inspired by vitamins
- Physics - Jul 18 A Playful Approach to Quantum Computing
- Physics - Jul 15 Team devises new way for stabilizing battery recharge
- Administration - Jul 15 Ready for takeoff
Scientists lay out plans for efficient solar energy harvesting
Solar power could be harvested more efficiently and transported over long distances using tiny molecular circuits, according to research inspired by new insights into natural photosynthesis.
Incorporating the latest research into how plants, algae and some bacteria use quantum mechanics to optimise energy production via photosynthesis, scientists have set out how to design molecular "circuitry" that is 10 times smaller than the thinnest electrical wire in computer processors. Published , the report discusses how tiny molecular energy grids could capture, direct, regulate and amplify raw solar energy.
Professor Gregory Scholes, lead author from the University of Toronto said: "Solar fuel production often starts with the energy from light being absorbed by an assembly of molecules. The energy is stored fleetingly as vibrating electrons and then transferred to a suitable reactor.
"It is the same in biological systems. In photosynthesis, for example, antenna complexes comprised of chlorophyll capture sunlight and direct the energy to special proteins that help make oxygen and sugars. It is like plugging those proteins (called reaction centres) into a solar power socket."
In natural systems energy from sunlight is captured by ’coloured’ molecules called dyes or pigments, but is only stored for a billionth of a second. This leaves little time to route the energy from pigments to the molecular machinery that produces fuel or electricity.
The key to transferring and storing energy very quickly is to harness the collective quantum properties of antennae, which are made up of just a few tens of pigments.
Alexandra Olaya-Castro, co-author of the paper from UCL’s department of Physics and Astronomy said: "On a bright sunny day, more than 100 million billion red and blue "coloured" photons strike a leaf each second.
"Under these conditions plants need to be able to both use the energy that is required for growth but also to get rid of excess energy that can be harmful. Transferring energy quickly and in a regulated manner are the two key features of natural light harvesting systems.
"By assuring that all relevant energy scales involved in the process of energy transfer are more or less similar, natural antennae manage to combine quantum and classical phenomena to guarantee efficient and regulated capture, distribution and storage of the sun’s energy."
Summary of lessons from nature about concentrating and distributing solar power with nanoscopic antennae:
UCL Physics & Astronomy
Last job offers
- Physics/Materials Science - 20.7
Projektleiter/in Inventar & Logistik
- Microtechnics - 15.7
- Mathematics - 13.7
Wissenschaftliche/r Mitarbeiter/in 80-100%
- Chemistry - 8.7
Faculty Positions in Chemistry
- Life Sciences - 8.7
Faculty Position in Physics of Biological Systems
- Physics/Materials Science - 28.6
Material Scientist - Post-Doctoral position for 2 years
- Medicine/Pharmacology - 19.7
Professor of Medical Physics (1.0 fte)
- Physics/Materials Science - 19.7
Assistant Professor of Condensed Matter Theory
- Chemistry - 8.7
Universitätsassistent/in mit Doktorat für Professoren Laufbahnstelle
- Life Sciences - 16.8
Professur für Biophysik
- Physics/Materials Science - 30.6
Full Professorship (W2) for ’Theoretical Particle Physics - Lattice Field Theory’ from the...
- Environment - 29.6
- Chemistry - 11.7
Lecturer (Assistant Professor)/Senior Lecturer / Reader (Associate Professor) in Physical Chemistry
- Chemistry - 11.7
Professor of Computational Chemistry
- Chemistry - 22.7
Endowed William D. Van Vorst Chair in Chemical Engineering
- Chemistry - 21.7
Res Assist Professor_Johnson Lab 07-21-16