The present disclosure provides an infrared sensing device having a simple structure and being capable of detecting an infrared ray. A device 300 includes a variable resistance portion 13 whose electrical resistance varies in response to an infrared ray and a detection portion that detects the variation of the electrical resistance of the variable resistance portion. The variable resistance portion satisfies at least one of i) inclusion of a material potentially absorbing an infrared ray by localized surface plasmon resonance, and ii) reception of a carrier from a carrier supply portion 23 including the above material and being in contact with the variable resistance portion, the carrier being an electron and/or a hole, the carrier being generated by irradiation of the carrier supply portion with an infrared ray.

The present disclosure provides an infrared sensing device having a simple structure and being capable of detecting an infrared ray. A device 300 includes a variable resistance portion 13 whose electrical resistance varies in response to an infrared ray and a detection portion that detects the variation of the electrical resistance of the variable resistance portion. The variable resistance portion satisfies at least one of i) inclusion of a material potentially absorbing an infrared ray by localized surface plasmon resonance, and ii) reception of a carrier from a carrier supply portion 23 including the above material and being in contact with the variable resistance portion, the carrier being an electron and/or a hole, the carrier being generated by irradiation of the carrier supply portion with an infrared ray.

Systems and methods for sensing vibrational absorption induced photothermal effect via a visible light source. A Mid-infrared photothermal probe (MI-PTP, or MIP) approach achieves 10 mM detection sensitivity and sub-micron lateral spatial resolution. Such performance exceeds the diffraction limit of infrared microscopy and allows label-free three-dimensional chemical imaging of live cells and organisms. Distributions of endogenous lipid and exogenous drug inside single cells can be visualized. MIP imaging technology may enable applications from monitoring metabolic activities to high-resolution mapping of drug molecules in living systems, which are beyond the reach of current infrared microscopy.

Systems and methods for sensing vibrational absorption induced photothermal effect via a visible light source. A Mid-infrared photothermal probe (MI-PTP, or MIP) approach achieves 10 mM detection sensitivity and sub-micron lateral spatial resolution. Such performance exceeds the diffraction limit of infrared microscopy and allows label-free three-dimensional chemical imaging of live cells and organisms. Distributions of endogenous lipid and exogenous drug inside single cells can be visualized. MIP imaging technology may enable applications from monitoring metabolic activities to high-resolution mapping of drug molecules in living systems, which are beyond the reach of current infrared microscopy.

An apparatus is provided for nanoantenna-enhanced detection of infrared radiation. The apparatus includes one or more detector pixels. A plurality of detector pixels can constitute a focal plane array (FPA). Each detector pixel carries at least a first and a second subpattern of nanoantenna elements, with elements of the second subpattern interpolated between elements of the first subpattern. Each detector pixel also includes separate collection electrodes for collecting photogenerated current from the respective subpatterns.

A method for processing a raw image characterized by raw measurements S.sub.p(i,j) that are associated with active bolometers B.sub.pix_(i,j) of an imager, which bolometers are arranged in a matrix array, the imager being at an ambient temperature T.sub.amb and furthermore comprising blind bolometers B.sub.b_(k), the method, which is executed by a computer that is provided with a memory, comprising the following steps: a) a step of calculating the electrical resistances R.sub.Tc(i,j) and R.sub.Tc(k), at the temperature T.sub.amb, of the active and blind bolometers, respectively, from their respective electrical resistances R.sub.Tr(i,j) and R.sub.Tr(k) at a reference temperature T.sub.r, said resistances being stored in the memory; b) a step of determining the temperatures T.sub.sc(i,j) actually measured by each of the active bolometers B.sub.pix_(i,j) from the electrical resistances calculated in step a) and from the raw measurements S.sub.p(i,j).

A method for processing a raw image characterized by raw measurements S.sub.p(i,j) that are associated with active bolometers B.sub.pix_(i,j) of an imager, which bolometers are arranged in a matrix array, the imager being at an ambient temperature T.sub.amb and furthermore comprising blind bolometers B.sub.b_(k), the method, which is executed by a computer that is provided with a memory, comprising the following steps: a) a step of calculating the electrical resistances R.sub.Tc(i,j) and R.sub.Tc(k), at the temperature T.sub.amb, of the active and blind bolometers, respectively, from their respective electrical resistances R.sub.Tr(i,j) and R.sub.Tr(k) at a reference temperature T.sub.r, said resistances being stored in the memory; b) a step of determining the temperatures T.sub.sc(i,j) actually measured by each of the active bolometers B.sub.pix_(i,j) from the electrical resistances calculated in step a) and from the raw measurements S.sub.p(i,j).

Systems and methods for sensing vibrational absorption induced photothermal effect via a visible light source. A Mid-infrared photothermal probe (MI-PTP, or MIP) approach achieves 10 mM detection sensitivity and sub-micron lateral spatial resolution. Such performance exceeds the diffraction limit of infrared microscopy and allows label-free three-dimensional chemical imaging of live cells and organisms. Distributions of endogenous lipid and exogenous drug inside single cells can be visualized. MIP imaging technology may enable applications from monitoring metabolic activities to high-resolution mapping of drug molecules in living systems, which are beyond the reach of current infrared microscopy.

Systems and methods for sensing vibrational absorption induced photothermal effect via a visible light source. A Mid-infrared photothermal probe (MI-PTP, or MIP) approach achieves 10 mM detection sensitivity and sub-micron lateral spatial resolution. Such performance exceeds the diffraction limit of infrared microscopy and allows label-free three-dimensional chemical imaging of live cells and organisms. Distributions of endogenous lipid and exogenous drug inside single cells can be visualized. MIP imaging technology may enable applications from monitoring metabolic activities to high-resolution mapping of drug molecules in living systems, which are beyond the reach of current infrared microscopy.

A measurement circuit for a resistive sensor comprises an integrator of information representative of the difference between a current passing through the sensor and a first reference current, and a circuit for making the output of the integrator depend on a reference level.