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05:58 Leibniz Universität Hannover (LUH) English 2012

Enabling Technologies

  • Published: 2012
  • Publisher: Leibniz Universität Hannover (LUH)
  • Language: English
06:42 Leibniz Universität Hannover (LUH) English 2012

Human Resources

  • Published: 2012
  • Publisher: Leibniz Universität Hannover (LUH)
  • Language: English
04:58 Leibniz Universität Hannover (LUH) English 2012

Quantum Engineering

  • Published: 2012
  • Publisher: Leibniz Universität Hannover (LUH)
  • Language: English
04:04 Leibniz Universität Hannover (LUH) English 2012

Quantum Sensors

  • Published: 2012
  • Publisher: Leibniz Universität Hannover (LUH)
  • Language: English
01:53 Universität Bayreuth (UBT), Macromolecular Chemistry II No linguistic content; Not applicable 2013

Functionalization of gold nanoparticles in two-phase system

The short video shows the well-established method of ligand-exchange, which is used for the introduction of ligands to nanoparticles in one-phase and two-phase systems. Here is shown ligand exchange of citric acid ligands on gold nanoparticles against vinyl-pyridine functionalized polystyrene.
  • Published: 2013
  • Publisher: Universität Bayreuth (UBT), Macromolecular Chemistry II
  • Language: No linguistic content; Not applicable
04:04 Leibniz Universität Hannover (LUH) German 2012

Quantensensoren

  • Published: 2012
  • Publisher: Leibniz Universität Hannover (LUH)
  • Language: German
21:26 IWF (Göttingen) German 1984

Chromatographie - 1. Trennmethoden in Theorie und Praxis

Chromatographische Trennung: Farbstoffgemische in der Dünnschicht- und Flüssigkeitssäulenchromatographie (Zeitraffung). Funktion der stationären und mobilen Phase. Gaschromatographie. Moderne Gerätetechnik: Scanner, Plotter, Integratoren und Drucker. Adsorption und Verteilungsgleichgewicht in Experiment und Modelltrick: kinetisches Modell, Trennstufenmodell, Ionenaustausch, Gelchromatographie, Umkehrphasen, Trennstufenzahl und -höhe, Durchflußgeschwindigkeit, Retentionszeit und Trennleistung: Van-Deemter-Kurve.
  • Published: 1984
  • Publisher: IWF (Göttingen)
  • Language: German
15:08 IWF (Göttingen) German 1985

Chromatographie - 2. Analysentechniken

Gerätetechnische Demonstration dreier verschiedener moderner chromatographischer Verfahren. 1. Dünnschichtchromatographie: Anwendung von Nanoliter-Kapillaren; Probennehmer und Auftragsautomat; Flachboden-, Sandwich-, Linearentwicklungs-, Antizirkular-Kammer; Sprühentwicklung; Tauchkammer; Photometer-Scanner; Plotter; Integrator; Drucker. 2. Hochleistungs-Flüssigkeits-Chromatographie: Säulen; Reaktionsdetektor. 3. Gaschromatographie: Trennsäulen und Trennkapillaren; Ionisationsdetektor.
  • Published: 1985
  • Publisher: IWF (Göttingen)
  • Language: German
03:45 IWF (Göttingen) German 1982

Diffusion in Abhängigkeit vom Molekulargewicht am Beispiel verschiedener Farbstoffe

The dyes chrysoidin (mol. wt. 249), orange G (452), acid fuchsin (586), light green (793) diffuse through 10% gelatine columns. The diffusion velocity decreases with increasing molecular weight and continuous experimental duration (8 days at room temperature).
  • Published: 1982
  • Publisher: IWF (Göttingen)
  • Language: German
13:36 Rensselaer Polytechnic Institute English 1974

Joseph Fraunhofer: Dispersion

The uses to which Fraunhofer put the dark lines in the spectrum of sunlight are explained. He charted the dispersive powers of optical glass he had perfected. He designed and constructed the finest achromatic lenses and optical instruments, including refraction telescopes. Explores some of these telescopes.
  • Published: 1974
  • Publisher: Rensselaer Polytechnic Institute
  • Language: English
34:10 Michigan State University English 1965

An Introduction to Superconductivity

Looks at measurements indicating the disappearance of electrical resistance in the transition to the superconducting state. Considers the temperature of transition, the exclusion of magnetic flux (Meissner effect), shielding currents, the "floating magnet," and persistent currents. Includes a discussion of the tunnel effect in connection with experiments involving an electron tunneling junction.
  • Published: 1965
  • Publisher: Michigan State University
  • Language: English
17:21 IWF (Göttingen) English 1983

Evaporation of Crystals - Evaporation of Germanium-mono-sulfide Cleavage Plane

With the interference-contrast-microscope it is possible to observe low steps which occur on a GeS-cleavage face during evaporation. The surface evaporates at locations where the crystal structure is disturbed: at the cleavage steps and at distinct dislocations. At first the cleavage steps are completely evaporated if they are not oxidized. Subsequently terraced pits are formed. Steps spread from the center of the pits over the surface homogeneously. The origins of the steps are locally fixed (at dislocations) or appear at random locations when the steps are formed by dislocation loops or by stacking faults. The shape of the pits is rhombic at low temperatures and oval at high temperatures. In addition, rectangular pits randomly appear at different locations at high temperatures. With increasing temperature stationary rhombic step patterns appear temporarily dendritic. Herringbones are formed by intersecting steps of different stationary centers. Precipitated impurities (GeS[2]) affect the spreading steps if the surface deviates from the ideal cleavage plane. Many details of the step patterns are explained by still pictures which show chemically etched examples. A ball model and an animation illustrate the relation between evaporation patterns and the crystal structure.
  • Published: 1983
  • Publisher: IWF (Göttingen)
  • Language: English
17:25 IWF (Göttingen) German 1983

Kristallverdampfung - Verdampfung der Germaniummonosulfid-Spaltfläche

Germaniummonosulfid-Verdampfung zwischen 660 und 800 K an ebenen Spaltflächen im Auflicht-Interferenzkontrast in Heizkammer mit Argon-Schutzgas. Probendicke 0,5 bis 1 mm. Mikro- und REM-Aufnahmen. Kristallgitterabbau im Modell und Zeichentrick: kovalente Bindungen, Stufen- und Schraubenversetzungen, Halbkristallagen. Verdampfungsmuster: rhombisch und dendritisch. Bildung von Grübchen und Inseln. Ausscheidung von Germaniumdisulfid.
  • Published: 1983
  • Publisher: IWF (Göttingen)
  • Language: German
37:27 Michigan State University English 1963

Liquid Helium II - The Superfluid

Demonstrates the elementary properties of the superfluid. Shows and discusses the lambda point of transition, a super leak, a bulk viscosity demonstration and a measurement of the speed of a second sound.
  • Published: 1963
  • Publisher: Michigan State University
  • Language: English
34:10 Rensselaer Polytechnic Institute English 1975

Refraction, Dispersion and Resonance

Animation and scientific instruments are used to demonstrate the principles of refraction, dispersion and resonance.
  • Published: 1975
  • Publisher: Rensselaer Polytechnic Institute
  • Language: English
2:38:15 CityTV.nl, Foundation for Fundamental Research on Matter (FOM) English 2012

Master class with Alain Aspect

Fifty years ago, R. Hanbury Brown and R.Q. Twiss, invented a new method to measure the angular diameter of stars, based on the observation of correlations in light. The analysis of their experiment in term of photons prompted hot discussions, and eventually led to the development of modern quantum optics, based on photon-photon correlation experiments. Similar quantum correlations can be observed with bosonic and fermionic atoms. I will present such experiments, after recalling the significance of the HBT landmark experiment.
  • Published: 2012
  • Publisher: CityTV.nl, Foundation for Fundamental Research on Matter (FOM)
  • Language: English
26:31 OpenWebcast.nl, Foundation for Fundamental Research on Matter (FOM) English 2013

The award ceremony for the FOM Prizes 2012

  • Published: 2013
  • Publisher: OpenWebcast.nl, Foundation for Fundamental Research on Matter (FOM)
  • Language: English
46:38 Foundation for Fundamental Research on Matter (FOM) English 2015

Entropy, information and order in soft matter

Entropy, information, and order are important concepts in many fields, relevant for materials to machines, for biology to econophysics. Entropy is typically associated with disorder; yet, the counterintuitive notion that a thermodynamic system of hard particles (colloids) might - due solely to entropy - spontaneously assemble from a fluid phase into an ordered crystal was first predicted in the mid-20th century. First demonstrated for rods, and then spheres, the ordering of colloids by entropy maximization upon crowding is now well established. In recent years, surprising discoveries of ordered entropic colloidal crystals of extraordinary structural complexity have been predicted by computer simulation and observed in the laboratory. These findings, presented in this talk, demonstrate that entropy alone can produce order and complexity beyond that previously imagined, and that, in situations where other interactions are also present, the role of entropy in producing order may be greatly underestimated. Glotzer discusses how new statistical mechanical principles learned from recent findings can be used to design shapes that promote long-range entropic order.
  • Published: 2015
  • Publisher: Foundation for Fundamental Research on Matter (FOM)
  • Language: English
1:17:27 CityTV.nl, Foundation for Fundamental Research on Matter (FOM) English 2011

Master class I with Boris Kayser

We will review the physics of neutrino oscillation, and summarize what has been learned from oscillation and other data during the last dozen years. We will discuss recent surprises that may point to new interactions and new particles. Then we will turn to the future: What are the open questions, why are they interesting, and how can we answer them through future experiments?
  • Published: 2011
  • Publisher: CityTV.nl, Foundation for Fundamental Research on Matter (FOM)
  • Language: English
2:21:07 Foundation for Fundamental Research on Matter (FOM) English 2014

Master class with Andreas Heinrich

We all learn in quantum mechanics lectures how to treat the spin of an electron using the Pauli matrices of an S=1/2 system. However, the magnetic properties of atoms in gas and in particular those in a solid-state environment or in molecules are often much more complex and interesting. We will begin by trying to understand what happens when the spin of a quantum system is larger than S=1/2 at which point ligand fields (crystal fields in solids) become important and lead to important effects such as magnetic anisotropy. We will then move from the treatment of a single spin system to coupled spins. How do you set up spin matrices for such a situation and how do you find solutions to those problems? We will discuss some experimental findings about spin chains on surfaces as studied by STM. If time permits we will try to apply the concepts of coupled spin systems to quantum computation.
  • Published: 2014
  • Publisher: Foundation for Fundamental Research on Matter (FOM)
  • Language: English
05:53 Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH German 2012

Künftige Methoden für das Tissue Engineering am Laserzentrum Hannover

  • Published: 2012
  • Publisher: Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH
  • Language: German
09:05 TU Kaiserslautern, FB Physik, AG Didaktik der Physik German 2015

TUtorial - iRadioactivity

Basisinformationen zu Aufbau und App von iRadioactivity Nicht erst seit dem Reaktorunfall von Fukushima im Jahr 2011 ist das Themenfeld Radioaktivität in unserer Gesellschaft eher negativ besetzt. Auch die nach wie vor offene Endlagersuche für radioaktive Abfälle stellt uns hierzulande vor große Probleme. Unabhängig vom persönlichen Standpunkt zur Kernenergie gibt es eine Reihe von Fragestellungen in diesem Kontext, die nicht nur physikalisch interessant, sondern auch für direkt Betroffene von großer Bedeutung sind: Wie groß muss das Sperrgebiet rund um das Atomkraftwerk Fukushima sein, so dass die vorhandene Strahlung auf ein für Bewohner ungefährliches Maß zurückgegangen ist? Wie lange müssen radioaktive Abfälle sicher endgelagert werden, so dass die von ihnen ausgehende Reststrahlung auf ein für Menschen ungefährliches Maß abgesunken ist? Weniger präsent, jedoch nicht minder bedeutend als die Risiken, sind die von ionisierender Strahlung eröffneten Chancen, beispielsweise in der Medizin. So stellt die Strahlentherapie bei Hautkrebs - der weltweit häufigsten Form der Krebserkrankung des 21. Jahrhunderts - eine wesentliche therapeutische Maßnahme in der kurativen (auf Heilung abzielenden) Therapie dar. Dabei werden unter anderem
  • Published: 2015
  • Publisher: TU Kaiserslautern, FB Physik, AG Didaktik der Physik
  • Language: German
03:50 Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH English 2012

Cryopreservation or: how can I extend the shelf life of cells?

  • Published: 2012
  • Publisher: Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH
  • Language: English
03:51 Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH German 2012

Kryokonservierung oder: Wie hebt man Zellen am besten auf?

  • Published: 2012
  • Publisher: Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH
  • Language: German
05:53 Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH English 2012

Future methods of tissue engineering at Hannover Laser Centre

  • Published: 2012
  • Publisher: Medizinische Hochschule Hannover (MHH), Exzellenzcluster REBIRTH
  • Language: English
00:32 Laserinstitut Hochschule Mittweida Original sound, no spoken text 2014

Remote Laserbohren von Edelstahl mit variierten Lochabständen

Remote Laser drilling of metal with various hole distances
  • Published: 2014
  • Publisher: Laserinstitut Hochschule Mittweida
  • Language: Original sound, no spoken text
00:37 Laserinstitut Hochschule Mittweida Original sound, no spoken text 2014

Laser - Hochratebohren von 10 µm dicker Metallfolie mit 2D Polygonscanner

High speed Laser drilling of 10 µm metal foil using a 2D Polygon scanning system
  • Published: 2014
  • Publisher: Laserinstitut Hochschule Mittweida
  • Language: Original sound, no spoken text
00:49 Laserinstitut Hochschule Mittweida Original sound, no spoken text 2014

Remote Laserbohren und Schneiden von Aluminiumoxidkeramik

Remote Laser drilling and Laser cutting of aluminium oxide ceramics
  • Published: 2014
  • Publisher: Laserinstitut Hochschule Mittweida
  • Language: Original sound, no spoken text
01:02 Laserinstitut Hochschule Mittweida Original sound, no spoken text 2015

3D Drucken / Hochrate Micro Cladding

3D Printing / Highspeed Micro Cladding
  • Published: 2015
  • Publisher: Laserinstitut Hochschule Mittweida
  • Language: Original sound, no spoken text
01:45 Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme Silent film 2015

Semi Final: Team robOTTO

  • Published: 2015
  • Publisher: Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme
  • Language: Silent film
04:06 Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme Silent film 2015

1. Basic Transportation Test: Team WF Wolves

  • Published: 2015
  • Publisher: Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme
  • Language: Silent film
10:13 Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme Silent film 2015

Final: Team b-it-bots

  • Published: 2015
  • Publisher: Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme
  • Language: Silent film
09:21 Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme Silent film 2015

Final: Team LUHbots

  • Published: 2015
  • Publisher: Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme
  • Language: Silent film
08:21 Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme Silent film 2015

Final: Team smARTLabs

  • Published: 2015
  • Publisher: Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme
  • Language: Silent film
02:23 Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme Silent film 2015

Basic Navigation Test: Team b-it-bots

  • Published: 2015
  • Publisher: Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme
  • Language: Silent film
00:41 Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme Silent film 2015

2. Basic Transportation Test: Team AutonOHM

  • Published: 2015
  • Publisher: Leibniz Universität Hannover (LUH), Institut für Mechatronische Systeme
  • Language: Silent film
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