A covalently triggered fluorescence turn-on detection scheme has been implemented for a tris(N-salicylideneamine)-derived dynamic fluorophore. Selective cleavage of strategically placed Si-O bonds by fluoride ion induces spring-loaded conformational transitions that are tightly coupled to fluorescence enhancement.

Abstract: In the present investigation, the effects of thermomechanical processing parameters and the steel chemical composition on the ultra fine ferrite formation characteristics were studied. This was programmed relying on the capabilities of strain induced transformation (SIT) phenomenon and applying to different grades of Si-Mn TRIP (Transformation Induced Plasticity) steels. According...

Scott G. Keller University of Central Florida Orlando, Florida, USA Ali P. Gordon University of Central Florida Orlando, Florida, USA ABSTRACT Helical compression springs are commonly used devices capable of storing kinetic energy. Typical applications vary in simplicity, ranging from low stress amplitudes and in favorable environments, e.g. ball point pen spring at room temperature, to mill...

Bending is one of the most common metal forming technology and it can be applied not only in sheet metal forming but also in forming of wires, rods, strips, pipes and bars. However, in car production, ship building and home appliance manufacturing sheet metal bending is most widely employed. One of the most significant sheet metal bending operations is V – Die bending. This process consists of ...

Effects of temperature and oxygen concentration on decarburization of 55SiCr spring steel were investigated at the temperature range of 500°C–1 200°C by using a Muffle furnace (an atmosphere of ambient air) and a Simultaneous Thermal Analyzer (low oxygen concentration with 2% O2 and 98% N2). In ambient air, the decarburization behavior can be divided roughly into five temperature ranges: T≥1 20...

From the Smith-Kettlewell Institute of Visual Sciences, Pacific Medical Center. This investigation was supported by Research Career Program Award No. K3 NB-14,094 from the National Institute of Neurological Diseases and Blindness; Public Health Service Program Project Research Grant No. NB-06038, and General Research Support Grant No. S SOI FR-0S566. bearing surface was fashioned from a 1-mm-wi...

AISI 301 stainless steel is a frequently used metal, especially in high temperature demands and or in part with high corrosion risk. Thin spring steel plates can be used as expansions of heat furnaces insulation and variety of all other springs. The present study has assessed the effects of temperature and thermal treatment time span on the microstructure of stainless steel 301 to achieve elast...