Strain-tunable

A major problem in using QDs for STED super-resolution imaging is significant overlapping between the absorption and emission spectra of conventional semiconductor nanocrystals. To address this problem, we have recently developed strain-tunable colloidal nanocrystals by using lattice-mismatched heterostructures that are grown by epitaxial deposition of a compressive shell... 

Li J, Wu Y, Fu J, Cong Y, Peng J, Han Y (2004) Revtasibly strain-tunable elastomcaic photonic crystals. Chem Phys Lett 390 285-289... 

Different approaches to obtain wrinkles in thin polymer sheets were presented by Harrison and Stafford [53, 54], Thin polyethylene (PE) sheets were first spin-coated onto silicon wafers and subsequently transferred to a relatively thick slab of PDMS by releasing the film in water. This technique takes advantage of the tunable film thickness by the spin-coating process (spin velocity, concentration of polymer solution) as well as the water-insoluble nature of PE. Wrinkles were induced by either compressing the PDMS-PE-bilayer setup [54] or depositing the PE-sheet onto a prestrained PDMS slab and releasing the strain afterwards [53],... 

B. Experimental Line Widths for Ln + and An + Transitions. The first detailed quantitative study of the temperature dependence of the line width in a lanthanide system was done on Pr + in LaF3 by Yen, Scott, and Shawlow (43). Since that time line widths as low as 15 kHz have been observed for the D2 to 4 transition of Pr + in LaF2 at 2 K (44). To observe such narrow homogeneous line widths within the strain broadened inhomogeneous line width found in solid systems, experimental techniques involving tunable dye lasers are usually employed. These techniques have been reviewed by Selzer (45) while specific results for the lanthanide systems have been reviewed by Yen (46). ... 

Figure 16.23 (a) Quasi-static strain measured with the tunable Fabry—Perot filter (TFPF)-demodulated FBG sensor signal (b) strain wave signals measured with the Mach-Zehnder interferometer (MZI)-demodulated FBG sensor compared with that measured by the PZT sensor [47]. 

Gold, B., Dudley, G. B., Alabugin, 1. V. (2013). Moderating Strain without Sacrificing Reactivity Design of Fast and Tunable Noncatalyzed Alkyne-Azide Cycloadditions via StereoelectronicaUy Controlled Transition State Stabilization. Journal of the American Chemical Society, 135(4), 1558-1569. 

Gold B, Dudley GB, Alabugin IV (2013) Moderating strain without sacrificing reactivity design of fast and tunable noncat-alyzed alkyne-azide cycloadditions via stereoelectronically controlled transition state stabilization. J Am Chem Soc 135(4) 1558-1569. doi 10.1021/ja3114196... 

Other optical and spectroscopic techniques are also important, including positron annihilation lifetime spectroscopy, spectroscopic ellip-sometry, confocal Raman spectroscopy, and photoluminescence spectroscopy. Surface-enhanced Raman spectroscopy has been made tunable using gold nanorods and strain control on elastomeric PDMS substrates. ... 

Alexander, K. D. Skinner, K. Zhang, S. Wei, H. Lopez, R., Tunable SERS in Gold Nanorod Dimers Through Strain Control on an Elastomeric Substrate. Nano Lett. 2010,10, 4488-4493. 

Table 7.4 gives an overview on the relation between strain resolution and frequency range for a strain measurement task. From the users point of view, for most applications the tunable filter technique is a popular choice. If,... 

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