The present invention relates to compositions comprising a metal, a metal aggregation inhibitor, and a colour changing agent. The metal is bindable to the colour changing agent to provide a change in colour on binding and/or release thereof.

A sensing structure is presented for use in testing integrated circuits on a substrate. The sensing structure includes a probe region corresponding to a conductive region for connecting to the integrated circuit. A first sensing region at least partially surrounds the probe region. A plurality of sensing elements connects in series such that a first of the plurality of sensing elements has two terminals respectively connected to the first sensing region and the probe region. And a second of the plurality of sensing elements has two terminals respectively connected to the probe region and a first reference potential.

Provided are compositions, kits, and methods for the identification of Salmonella. In certain aspects and embodiments, the compositions, kits, and methods may provide improvements in relation to specificity, sensitivity, and speed of detection.

A method for detecting a food spoilage microbe in a food sample comprising contacting a food sample with a peptide substrate, comprising a fluorescent agent having an emission wavelength of 650-900 nm, a non-fluorescent agent having an absorption wavelength of 650-900 nm, for quenching said emission of said first fluorescent agent, and a cleavage site located between said fluorescent agent and said non-fluorescent agent, b) monitoring the fluorescence of the sample containing the peptide substrate in step a), wherein an increase in fluorescence is indicative for the presence of food spoilage microbes.

A method of detecting a Salmonella microorganism is provided. The method includes the use of a selective growth medium, a first indicator system that is converted to a first detectable product by a Salmonella microorganism, and a second indicator system that is converted to a second detectable product by -galactosidase enzyme activity. The method further comprises inoculating the growth medium and incubating the inoculated growth medium at a temperature higher than 40 degrees C.

A probe for detecting bacteria and/or fungi in vitro and in vivo is provided, the probe having a core and a plurality of probe elements; each probe element within the plurality of probe elements extending from the core and having a fluorophore and a binding moiety, wherein the binding moiety is a bacteria binding moiety and selectively binds to bacteria and/or to fungi and not to animal cells. Methods of use of the probe and kits comprising the probe are also provided.

A sensing structure is presented for use in testing integrated circuits on a substrate. The sensing structure includes a probe region corresponding to a conductive region for connecting to the integrated circuit. A first sensing region at least partially surrounds the probe region. A plurality of sensing elements connects in series such that a first of the plurality of sensing elements has two terminals respectively connected to the first sensing region and the probe region. And a second of the plurality of sensing elements has two terminals respectively connected to the probe region and a first reference potential.

Circuits and methods for testing wafers are disclosed herein. An embodiment of a method includes electrically contacting a first probe and a second probe to a wafer. A gas is blown in the areas proximate the first probe and the second probe. An electric potential is then applied between the first probe and the second probe while the gas is being blown.

Provided are compositions, kits, and methods for the identification of Salmonella. In certain aspects and embodiments, the compositions, kits, and methods may provide improvements in relation to specificity, sensitivity, and speed of detection.

A sensing structure is presented for use in testing integrated circuits on a substrate. The sensing structure includes a probe region corresponding to a conductive region for connecting to the integrated circuit. A first sensing region at least partially surrounds the probe region. A plurality of sensing elements connects in series such that a first of the plurality of sensing elements has two terminals respectively connected to the first sensing region and the probe region. And a second of the plurality of sensing elements has two terminals respectively connected to the probe region and a first reference potential.