Abstract: A system can include an emitter structure connected to a reservoir containing a working material, wherein the working material is in electrical communication with a first electrode, an electrode opposing the emitter structure across a gap; and optionally a frame holding the emitter structure and the electrode.

Abstract: A system can include an emitter structure connected to a reservoir containing a working material, wherein the working material is in electrical communication with a first electrode, an electrode opposing the emitter structure across a gap; and optionally a frame holding the emitter structure and the electrode.

Abstract: A system can include a reservoir configured to hold working material, a decontamination module configured to remove contaminants from the working material, a flow control mechanism configured to regulate working material flow between the reservoir and the decontamination module, and a manifold fluidly connecting the reservoir to the decontamination module.

Abstract: An electrospray apparatus comprising a capillary emitter.

Abstract: An apparatus and method for elemental analysis of a formation fluid from a subsurface tool having a housing, a sampling probe for collecting a sample of the formation fluid external to the housing, and a microplasma device within the housing and in fluid communication with the sampling probe. The microplasma device includes an upstream gas system, a sampling valve in fluid communication with the sampling probe and the upstream gas system, an expansion chamber for volatizing the formation fluid sample obtained from the sampling valve, and a microplasma chamber in fluid communication with the expansion chamber for ionizing the volatilized fluid sample.

Abstract: A method and apparatus for observing a biological microelectromechanical systems response to a fluid including combining an activator and a fluid wherein the fluid comprises a component from a subterranean formation, exposing the combined activator and fluid to a sensor in a wellbore to observe a biological microelectromechanical systems response, and integrating data from the observing with petrophysical data. A method and apparatus for observing a biological microelectromechanical systems response to a fluid including a housing comprising a biological microelectromechanical observation material, a signal analyzer in communication with the material, and a fluid preparation device positioned to allow fluid to flow to the surface, wherein the fluid comprises a component from a subterranean formation.

Abstract: An apparatus and method for elemental analysis of a formation fluid from a subsurface tool having a housing, a sampling probe for collecting a sample of the formation fluid external to the housing, and a microplasma device within the housing and in fluid communication with the sampling probe. The microplasma device includes an upstream gas system, a sampling valve in fluid communication with the sampling probe and the upstream gas system, an expansion chamber for volatizing the formation fluid sample obtained from the sampling valve, and a microplasma chamber in fluid communication with the expansion chamber for ionizing the volatilized fluid sample.