Gallery

Gallery

 

False-colored SEM image of an oxide field-effect transistor with a gate-length of ~ 70 nm (sample by Carsten Woltmann, PhD thesis). Zoom Image
False-colored SEM image of an oxide field-effect transistor with a gate-length of ~ 70 nm (sample by Carsten Woltmann, PhD thesis).

Photograph of an oxide chip containing several hundred thousand LaAlO3 - SrTiO3 field effect transistors. The colors are caused by light interfering with the transistor arrays (Carsten Woltmann). Zoom Image
Photograph of an oxide chip containing several hundred thousand LaAlO3 - SrTiO3 field effect transistors. The colors are caused by light interfering with the transistor arrays (Carsten Woltmann).
View into our pulsed-laser deposition system (target manipulator). Zoom Image
View into our pulsed-laser deposition system (target manipulator).
Top-view of a diamond used in a diamond anvil-cell with back irradiation (Jone Zabaleta). Zoom Image
Top-view of a diamond used in a diamond anvil-cell with back irradiation (Jone Zabaleta).
View of a thin-film sample mounted on a diamond in a diamond-anvil cell (Jone Zabaleta). Zoom Image
View of a thin-film sample mounted on a diamond in a diamond-anvil cell (Jone Zabaleta).

Optical microscope image of oxide field-effect transistors (LaAlO3-SrTiO3) made by Lukas Kürten. Zoom Image
Optical microscope image of oxide field-effect transistors (LaAlO3-SrTiO3) made by Lukas Kürten.
Photograph of a hot tungsten filament designed for a thermoelectronic generator (Alex Kyriazis). Zoom Image
Photograph of a hot tungsten filament designed for a thermoelectronic generator (Alex Kyriazis).
Photograph of a thermoelectronic energy converter in action. Zoom Image
Photograph of a thermoelectronic energy converter in action.
Thermolelectronic generator built to analyze in-situ and under operating conditions the work functions of quantum material heterostructures grown in our pulsed laser deposition system. Zoom Image
Thermolelectronic generator built to analyze in-situ and under operating conditions the work functions of quantum material heterostructures grown in our pulsed laser deposition system.

Photograph of the laser ablation process in the PLD chamber.
The invisible, ultraviolet beam of an excimer laser hits a SrTiO3 target so that it shines as a blue disk (middle, top), creating a plasma plume (blue) which extends towards the substrate, a crystal of SrTiO3 (white rectangle in the middle, bottom).
A second invisible infrared laser beam heats the substrate to 1200°C, so that it glows white. Zoom Image
Photograph of the laser ablation process in the PLD chamber.
The invisible, ultraviolet beam of an excimer laser hits a SrTiO3 target so that it shines as a blue disk (middle, top), creating a plasma plume (blue) which extends towards the substrate, a crystal of SrTiO3 (white rectangle in the middle, bottom).
A second invisible infrared laser beam heats the substrate to 1200°C, so that it glows white.
AFM micrograph of a NdGaO3 surface after heating to 1050 °C in 7.5 Pa of oxygen. Zoom Image
AFM micrograph of a NdGaO3 surface after heating to 1050 °C in 7.5 Pa of oxygen.
Sketch of envisioned solid-state/liquid-state heterostructures. This cross section illustrates the freedom of design and advances achievable if microscopic volumes of liquids (colored) were integrated into heterostructures. In the liquid volumes, for example, ions may create electric double layers (center) or move across gaps (sketch at right). Zoom Image
Sketch of envisioned solid-state/liquid-state heterostructures. This cross section illustrates the freedom of design and advances achievable if microscopic volumes of liquids (colored) were integrated into heterostructures. In the liquid volumes, for example, ions may create electric double layers (center) or move across gaps (sketch at right).
Sketch illustrating the vision of a sample containing integrated, microscopic liquid volumes, as opposed to Fig 2. Different liquids patterned into distinct shapes may be placed onto the sample at well-determined locations and then overgrown by subsequent layers. Zoom Image
Sketch illustrating the vision of a sample containing integrated, microscopic liquid volumes, as opposed to Fig 2. Different liquids patterned into distinct shapes may be placed onto the sample at well-determined locations and then overgrown by subsequent layers.
Illustration of a typical state-of-the-art sample setup used for ionic gating. A macroscopic drop of an electrolyte (blue) dropped onto the sample provides the gate liquid. Zoom Image
Illustration of a typical state-of-the-art sample setup used for ionic gating. A macroscopic drop of an electrolyte (blue) dropped onto the sample provides the gate liquid.
Optical microscopy image of a capacitor with integrated NaCl-H2O dielectric of ≈20 μm diameter (green arrow). Zoom Image
Optical microscopy image of a capacitor with integrated NaCl-H2O dielectric of ≈20 μm diameter (green arrow).
Photograph of a sample with 16 integrated capacitors after deposition of NaCl, before H2O deposition. The green arrows point to three of the capacitors (small bright dots). Zoom Image
Photograph of a sample with 16 integrated capacitors after deposition of NaCl, before H2O deposition. The green arrows point to three of the capacitors (small bright dots).
Top: Optical microscopy images of a ZnO-field-effect transistors with integrated NaCl-H2O dielectrics (arrow). These transistors have channel lenghts l≈10–20 μm. Bottom: Optical microscopy images of a chip containing 16 FETs. Zoom Image
Top: Optical microscopy images of a ZnO-field-effect transistors with integrated NaCl-H2O dielectrics (arrow). These transistors have channel lenghts l≈10–20 μm.
Bottom: Optical microscopy images of a chip containing 16 FETs.
 
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