Abstract: What is provided is a liquid droplet forming apparatus capable of stably ejecting dispersion liquid, as liquid droplets, containing settling particles having constant concentration. A liquid droplet forming apparatus includes an ejection head that has a liquid chamber storing liquid containing settling particles and that ejects a liquid droplet of the liquid, stirrer for stirring the liquid held in the liquid chamber, posture controller for controlling a posture of the stirrer, and a control unit that controls operations of the ejection head, the stirrer, and the posture controller, in which the stirrer includes a tube-like member inserted into the liquid chamber, and a liquid feeding portion that sucks or discharges the liquid stored in the liquid chamber via the tube-like member, and the posture controller controls one or both of the position and the direction in which the stirrer sucks and discharges the liquid in the liquid chamber.

Abstract: A gel precursor composition causative of no apprehension about exhibiting cytotoxicity can be made. A method for producing a gel causative of no apprehension about exhibiting cytotoxicity, using the gel precursor composition can be performed. One of the present embodiments is a gel precursor composition including: a biocompatible polymer; a crosslinking agent to be activated by a specific substance; and a photoresponsive compound bound to the specific substance, or encompassing the specific substance.

Abstract: A liquid droplet forming device for stably forming and ejecting a liquid droplet of a dispersion liquid containing settling particles includes an ejection head that ejects a liquid droplet of a liquid containing settling particles, and a control unit. The control unit controls a behavior of the ejection head by supplying an electrical signal. The ejection head includes a liquid holding portion that holds the liquid, a film-like member that has an ejection hole for ejecting the liquid droplet and that forms a liquid chamber, which holds the liquid, together with the liquid holding portion, and vibration applying means for vibrating the film-like member based on the electrical signal. The electrical signal includes an ejection signal for forming the liquid droplet by vibrating the film-like member, a stirring signal for vibrating the film-like member and a micro-vibration signal.

Abstract: A liquid droplet forming device for stably forming and ejecting a liquid droplet of a dispersion liquid containing settling particles includes an ejection head that ejects a liquid droplet of a liquid containing settling particles, and a control unit. The control unit controls a behavior of the ejection head by supplying an electrical signal. The ejection head includes a liquid holding portion that holds the liquid, a film-like member that has an ejection hole for ejecting the liquid droplet and that forms a liquid chamber, which holds the liquid, together with the liquid holding portion, and vibration applying means for vibrating the film-like member based on the electrical signal. The electrical signal includes an ejection signal for forming the liquid droplet by vibrating the film-like member, a stirring signal for vibrating the film-like member and a micro-vibration signal.

Abstract: A method for manufacturing a cell culture substrate in which cells are fixed via a hydrogel on a surface of a substrate includes forming a film of a first liquid on the surface of the substrate, and ejecting droplets of a second liquid onto the film.

Abstract: A droplet discharge device for discharging a droplet into recess parts of a storage vessel includes a storage vessel, a discharge head configured to insert a discharge surface into a recess part and discharge droplets while moving in two horizontal directions, a mounting table, a vertical position adjusting part configured to change a relative vertical position between the head and table, a vertical position adjustment control part configured to control the adjusting part, a horizontal position detecting part configured to detect a horizontal position of the storage vessel, and a target position detecting part configured to detect, before starting discharge, a distance from a vertical reference height to a discharge target surface, wherein the control part controls, based on the detected distance, the vertical position of the head or table during the discharge such that a discharge height of the discharge surface relative to the discharge target surface stays constant.

Abstract: A droplet discharge device for discharging a droplet into one or more droplet storage parts of a storage vessel; the droplet discharge device including: a droplet discharge part configured to discharge the droplet in a predetermined amount from a nozzle hole of the droplet discharge part; a storage vessel holding part configured to hold the storage vessel; a mover part configured to move the droplet discharge part relative to the storage vessel that is held by the storage vessel holding part; and a detecting part configured to detect a shape of a surface of the storage vessel that is held by the storage vessel holding part.

Abstract: (Object) To improve the accuracy of the placement of liquid droplets. (Means of Achieving the object) A liquid droplet discharging method is performed by a liquid droplet discharging apparatus configured to discharge a liquid droplet from a nozzle hole formed in a film-like member, the liquid droplet discharging method including positioning the nozzle hole inside a recessed portion provided in a container; and discharging the liquid droplet from the nozzle hole positioned inside the recessed portion.

Abstract: Provided is a method for producing a cell contained base, the method being capable of providing a cell contained base highly accurately controlled in number of nucleic acid molecules contained in a low-concentration nucleic acid standard sample, the method including a liquid droplet discharging step of discharging a cell suspension in the form of a liquid droplet with a liquid droplet discharging unit onto a base including at least one cell contained region; a cell number counting step of counting a number of cells contained in the liquid droplet with a plurality of sensors from two or more directions while the liquid droplet is flying into the cell contained region; and a liquid droplet landing step of landing the liquid droplet in the at least one cell contained region in a manner that a predetermined number of cells are located in the at least one cell contained region.

Abstract: Provided is a container (10) including a base material (1) including a plurality of concave portions (2); a recognition unit (3) disposed on the base material and configured to recognize the base material; and a storage unit (4) disposed in a position other than a measurement region of the base material and configured to store information on biomaterials contained in the plurality of concave portions, wherein the recognition unit and the storage unit are allowed to correspond to each other.

Abstract: Provided is a liquid droplet discharging apparatus that can maintain stable discharging even when a liquid containing particles or cells adheres to a nozzle surface.

Abstract: A liquid discharge apparatus includes a liquid discharge unit. The liquid discharge unit includes a liquid chamber member defining a liquid holding portion to hold a liquid, a film having a nozzle hole from which the liquid is discharged and a surface facing the liquid holding portion, and a holder supporting the film. The surface of the film has a contact angle with water of less than 90 degrees.

Abstract: Provided is an electrochromic device including an electrochromic element including a protrusion on a periphery of the electrochromic element, and a frame holding the electrochromic element, wherein the protrusion includes an electrode pad, and the frame includes a connecting member configured to electrically connect to the electrode pad.

Abstract: An object of the present invention is to provide a technique for precisely arranging nerve cells on a substrate while suppressing the migration of nerve cells. A manufacturing method for a substrate on which nerve cells are arranged is provided, the method including a step of arranging, on a substrate, a plurality of liquid droplets containing nerve cells by an inkjet method to form one or a plurality of liquid pools, the substrate having a region in which a cell adhesive material is arranged and a region in which a cell non-adhesive material is arranged; and a step of incubating the liquid pool until the nerve cells sediment and temporarily adhere onto the substrate to form a cell aggregate. The diameter per one liquid pool is 500 ?m or less, and the density of nerve cells per one liquid pool is 105 cells/cm2 or more.

Abstract: Provided is a liquid discharging head including: a membranous member including a discharging port through which a liquid is discharged; and a displacement member disposed at membranous member's one side at which the liquid to be discharged through the discharging port is provided and configured to displace a position of the membranous member to cause the liquid to be discharged through the discharging port.

Abstract: A liquid discharge head including: a film member including a discharge hole configured to discharge liquid; and a displacement member configured to displace a position of the film member to discharge the liquid from the discharge hole, wherein an edge of the film member forming the discharge hole has a curve in a cross section of the film member in a thickness direction of the film member, and a surface of the film member includes a passive film.

Abstract: A droplet forming device is provided. The droplet forming device includes a liquid holder configured to hold a liquid, a film having a discharge hole, two or more vibration generators configured to vibrate the film, and a driver configured to apply a driving signal to the vibration generators. One or more of the vibration generators are disposed in each region on the film where a polarity of bending moment differs.

Abstract: A liquid droplet forming device includes a liquid droplet discharger that discharges, as a liquid droplet, a particle suspension liquid in which one or more fluorescent particles are suspended; a light source for irradiating light onto the flying liquid droplet discharged from the liquid droplet discharger; a photodetector that receives fluorescence that is emitted by the one or more fluorescent particles included in the liquid droplet in response to the light as excitation light; and a particle number detector that detects a number of the one or more fluorescent particles included in the liquid droplet based on information from the photodetector.

Abstract: Provided is a liquid droplet forming device including: a liquid container capable of containing a liquid; a membranous member disposed at a bottom of the liquid container and including a discharging hole; a deforming unit capable of deforming the membranous member; and a driving unit configured to drive the deforming unit by outputting a discharging signal for deforming the membranous member to discharge the liquid or a suppressing signal for suppressing residual vibration of the membranous member, wherein the suppressing signal is a signal based on natural vibration period T0 of the membranous member, wherein an amplitude of the suppressing signal is lower than or equal to an amplitude of the discharging signal, and wherein interval time Ti from when outputting of the discharging signal is ended until when outputting of the suppressing signal is started satisfies a formula: Ti=(m?½)×T0, where m represents a positive integer.

Abstract: A multi-well plate lid includes a well-side surface to cover a plurality of wells of a multi-well plate. The well-side surface includes two or more regions with different adhesive strengths to the multi-well plate.