Openspritzer: an open hardware pressure ejection system for reliably delivering picolitre volumes

Forman, C J, Tomes, H, Mbobo, B, Burman, R J, Jacobs, M, Baden, T and Raimondo, J V (2017) Openspritzer: an open hardware pressure ejection system for reliably delivering picolitre volumes. Scientific Reports, 7 (1). ISSN 2045-2322

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Abstract

The ability to reliably and precisely deliver picolitre volumes is an important component of biological research. Here we describe a high-performance, low-cost, open hardware pressure ejection system (Openspritzer), which can be constructed from off the shelf components. The device is capable of delivering minute doses of reagents to a wide range of biological and chemical systems. In this work, we characterise the performance of the device and compare it to a popular commercial system using twophoton fluorescence microscopy. We found that Openspritzer provides the same level of control over
delivered reagent dose as the commercial system. Next, we demonstrate the utility of Openspritzer in a series of standard neurobiological applications. First, we used Openspritzer to deliver precise amounts of reagents to hippocampal neurons to elicit time- and dose-precise responses on neuronal voltage. Second, we used Openspritzer to deliver infectious viral and bacterial agents to living tissue. This included viral transfection of hippocampal interneurons with channelrhodopsin for the optogenetic manipulation of hippocampal circuitry with light. We anticipate that due to its high performance and
low cost Openspritzer will be of interest to a broad range of researchers working in the life and physical
sciences.

Item Type: Article
Schools and Departments: School of Life Sciences > Neuroscience
Depositing User: Thomas Baden
Date Deposited: 20 Jun 2017 14:39
Last Modified: 30 Jun 2017 06:52
URI: http://sro.sussex.ac.uk/id/eprint/68763

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