Werkstoff Glas

Schaeffer, Helmut A.; Langfeld, Roland

doi:10.1007/978-3-642-37231-5

Cited by 12 publications

(5 citation statements)

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“…55,56 To probe whether recombination at straininduced defects may be at the origin of the double-peak structure, we measured the PL of perovskite thin films that were deposited either on glass, or on polyethylene terephthalate (PET). These substrate materials exhibit different thermal expansion coefficients in the order of 10 À5 K À1 (PET), 57,58 and 10 À6 K À1 (glass), 59 respectively. With the thermal expansion coefficient of MAPbI 3 being in the range of (1.6 Â 10 À4 -3.8 Â 10 À4 ) K À1 , 60,61 we expect a larger build-up of strain upon cooling for the MAPbI 3 /glass sample compared to the MAPbI 3 /PET sample.…”

Section: Investigating Possible Structural Origins For the Double Peakmentioning

confidence: 99%

Double peak emission in lead halide perovskites by self-absorption

et al. 2020

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Section: Investigating Possible Structural Origins For the Double Peakmentioning

confidence: 99%

Double peak emission in lead halide perovskites by self-absorption

et al. 2020

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“…On its outer surface, corrosion and many small scratches limit the glass strength, whereas around an inclusion the glass has never been subject to external environment; therefore, it can be much stronger; in the case of a smooth bubble, strength could be close to theoretical strength. The latter is calculated from glass composition (window glass) and atomic forces to be c. 7000 MPa (Schaeffer 2013). Typically, the highest strength of glass measured on native and undamaged glass samples is only approximately 1/10 of this value.…”

Section: Glass Strengthmentioning

confidence: 99%

Spontaneous cracking of thermally toughened safety glass. Part one: Properties of nickel sulphide inclusions

Kasper

2018

Glass Struct Eng

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Spontaneous breakage of glass in facades is under control today, due to application of a very effective prevention method, namely the Heat Soak Test (HST) following EN 14179-1 (2006/2016). Nevertheless, details of the latter are still subject to discussion, mainly due to the fact that some years ago, it was discovered in an R&D project that it's holding temperature is too high, and it was reduced to 260 ± 10 • C at the recent review. In the present paper we investigate the properties of nickel sulphide inclusions in order to show that there's a huge difference in their comportment, and therewith their "criticality", in the HST or on the façade. Namely, not only the expansivity difference between nickel sulphide and the glass plays a role. Nickel sulphide inclusions show a spectrum of possible compositions, and we approach this fact systematically, showing how the breakage probability under both conditions changes depending on the detailed composition of the inclusions. The result of this comparison is that, out of all nickel sulphide inclusions leading to breakage in HST, only 40% also lead to breakage at ambient. Another aspect is the time-to-breakage curve in the HST. By the example of a dataset where nearly only SiO 2 stones cause breakages therein, we show that

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“…Glass and glass ceramics represent both emerging high-performance materials in various elds with direct ties to modern micro-, nano-and biotechnology, with numerous applications directly bene ting from functional micro-and nanostructuring. Such applications were, for instance, demonstrated for optics 6,7 , medical technology [7][8][9] , nano-and micromechanical systems 10,11 , chip packaging 12 , precision metrology 13 , construction 14 , and arts and crafts 15 .…”

Section: Introductionmentioning

confidence: 99%

A paradigm change: Focused Electron Beam Nanostructuring of Glass

Hofmann

Weigel

Strehle

et al. 2023

Preprint

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We demonstrate a paradigm change in nanofabrication by using a focused electron beam in an operating mode as used in conventional scanning electron microscopy, previously known as non-destructive technique, for direct and large-scale glass and glass ceramics patterning. Nanostructured glasses and glass ceramics are of fundamental importance for many applications ranging from optics to nano- and microscale devices over precision engineering and metrology. Direct focused electron beam patterning can hereby replace the elaborate combination of surface masking combined with dry-chemical reactive ion etching and enable new and efficient fabrication strategies for the creation of structures being several hundred nanometers deep. We discuss a first model based on ion migration and successfully realized the structuring process using electron energies of 5 to 15 keV in combination with different kinds of glasses, such as fused silica and ultra-low expansion glass. We furthermore demonstrate that this technique can be realized in literally any conventional scanning electron microscope, which thus enables a comparatively simple implementation in support of a broad field of applications. By controlling the surface beam trajectory, freeform surface structures and structure arrays can be directly engraved into the glass surface, which includes furthermore fragile and suspended structures and the embedding of metal structures. The technique is also compatible with 3D surface structures as long as they can be accessed by the electron beam.

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Werkstoff Glas

Cited by 12 publications

References 0 publications

Double peak emission in lead halide perovskites by self-absorption

Double peak emission in lead halide perovskites by self-absorption

Spontaneous cracking of thermally toughened safety glass. Part one: Properties of nickel sulphide inclusions

A paradigm change: Focused Electron Beam Nanostructuring of Glass

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