Examine This Report on cees dekker
Examine This Report on cees dekker
Blog Article
Midway via his job, Cees Dekker reinvented himself. Right after decades of hardcore physics, he shifted his emphasis to ‘nanobiology’ in the transform in the millennium. A time period he coined himself, as being a subject of reality.
It absolutely was only inside the nineteen nineties although, when nanotechnology experienced advanced to your level the place one molecules could possibly be manipulated, that the first experimental units commenced to appear.
Back in 1991, Sumio Iijima in the NEC Corporation had reported the synthesis of carbon nanotubes. Band structure calculations proposed that these nanotubes could exhibit metallic band conduction. This might be a major benefit above the conducting polymers we had explored, which had been, in reality, disordered semiconductors supplying simply variable-assortment hopping conductivity.
Due to the fact 2000, Dekker has shifted the main emphasis of his do the job in the direction of biophysics the place he studies the Qualities of solitary biomolecules and cells utilizing the applications of nanotechnology. This transformation of discipline was driven by his fascination for that remarkable functioning of biological molecular constructions, and also via the long-expression point of view that numerous interesting discoveries may be anticipated In this particular subject.[five] Present-day strains of research in his biophysics group are within the areas of:[6]
This yielded a breakthrough. Within just a few months, we were in the position to measure transportation by means of an individual solitary-walled carbon nanotube. According to low-temperature experiments by an excellent PhD university student in my group, Sander Tans (now a valued colleague and professor at Delft College of Engineering having an Energetic investigate lab at AMOLF in Amsterdam), we showed that carbon nanotubes ended up genuine quantum wires with quite long (micrometres) electronic coherence lengths — confirming theoretical predictions of metallic conduct.
Microbiology has only been around for the century, due to the fact we began to analyze micro-organisms more critically. I thought nanobiology was an proper expression, mainly because all molecular Organic suitable interactions occur for the nanoscale: a protein is a handful of nanometres in sizing, DNA is two nm thick.’
Numerous associated developments followed, exactly where our group set up distinct transistor variants including solitary-electron transistors at area temperature and intramolecular nanotube junctions that acted as rectifying diodes, and coupled several transistors into modest proof-of-principle electronic circuits.
Case in point (1) of bending configurations in 3D simulations of DNA rods on nanopores. A percentage of the membrane is shown in gray, the rim of the pore is highlighted in purple, and a 3D rendering with the motion on the DNA rod is exhibited.
‘Sure, I fully grasp individuals ended up surprised at time. At the conclusion of the nineties, After i was in my forties, I was Professor of Molecular Electronics and I've to confess that it had become a little bit bored, I didn’t master A lot anymore. The field went a lot more into the appliance facet, how you can integrate nanotubes into Digital circuits.
one). The current–voltage curves confirmed significant modulations with gate voltage, even at area temperature, which was consistent with band bending in the ~0.six eV bandgap semiconducting nanotube. These info also confirmed that the conductance may very well be modulated by six orders of magnitude by modifying the gate voltage. The effects of this get the job done — a room-temperature transistor made out of only one carbon nanotube molecule — had been released in Nature in Could 1998.
FtsZ treadmilling is important for Z-ring condensation and septal constriction initiation in bacterial mobile division
2001, discovery of one-electron transistors ceesdekker.net at home temperature based on nanotubes; realization of first logic circuits with carbon nanotube devices; and discovery of your molecular composition of DNA maintenance enzymes with AFM
2008, very first observation of protein-coated DNA translocation by means of nanopores; resolved the origin from the electrophoretic force on DNA in nanopores; discovered a significant velocity maximize of microtubules in electric powered fields; learned an anomalous electro-hydrodynamic orientation of microtubules; and solved the origin of sound in carbon nanotubes in liquid
Dekker heeft fundamentele ontdekkingen gedaan op het gebied van koolstof nanobuisjes. Mede vanwege deze werkzaamheden is hij al jaren de meest geciteerde fysicus in Nederland. Tegenwoordig onderzoekt hij achieved enkel-molecuultechnieken de biofysica van moleculen in de biologische cel. Dekker is naast zijn wetenschappelijk werk ook bekend vanwege zijn belangstelling voor de relatie tussen geloof en wetenschap en de discussie rond intelligent layout in 2005. (nl)