电影

(Click on the title or the image. Movies open in a new window)

Jetlab®4 in use at University of Sheffield, UK

在这方面视频Patrick Smith博士讨论了谢菲尔德大学JetLab®4系统的使用和应用。


Inkjet printed conductive traces using Jetlab®4 at National Taiwan University

视频demonstrates a Jetlab® 4 system inkjet printing conductive traces for Printed Electronics at National Taiwan University, Taipei.


滴下滴灌喷墨的液滴形成序列

Drop formation sequenceDrop on demand is illustrated using a 55 micron orifice. The illumination uses a short pulse synchronized with the drop generation. By changing the delay between the illumination pulse and the actuating signal that generates the drop, the drops are captured at various locations along their flight path. This short movie is obtained by capturing images at various locations along the drop trajectory.


较高频率下喷墨的发电

高频下降形成这是在需求喷墨分配器上的下降的图示,其以更高的频率产生液滴。较高频率对应于两个连续液滴之间的较短时间,这导致较小的距离。因此,在捕获的图像中可见更多滴。


在飞行中合并和混合滴

Drop merging两个分配器中的每一个以480Hz的频率产生按需50微米滴。同步照明允许沿着其飞行路径跟踪液滴。设置时序和方向使得液滴合并成单个液滴。合并后可以观察到一些振荡。

Drop merging and mixing采取这种方法来研究反应的动态。在右侧的图像中,当溶液pH高时,其中一个溶液变为荧光。第二种溶液具有高pH值。对于该图像,照明在激发荧光染料的波长下连续。在液滴合并后观察到荧光,并且随着两个溶液混合而变得更加强烈。存在更强烈的照明区域,其对应于合并下降内的高pH溶液的存在。


Dispensing into test tubes using a valve jet

Dispensing larger volumes using ink-jet valveDispensing larger volumes in a single event can be achieved using an ink-jet valve. The released fluid has the appearance of a long slug. This movie shows the dispensing of a biomedical reagent into test vials.


分配细胞

电池的喷墨分配这部电影是分配肝细胞的例子,平均大小约为10um。由于流体以滴剂的形式喷射,可以观察到细胞流下流并离开孔口。

Human liver cells (HEK293e): resuspended in Ex-Cell 293 CDM (Cat. No. 14571-1000M; Lot No. 4L1122; SAFC Biosciences, Lenexa, Kansas, USA, ‘Ex-Cell’ medium) supplemented with 4mM glutamine to a density of 2x106 cells/mL were dispensed at a frequency of 960Hz with a 3.0µs rise and fall, 33µs dwell at 46V using a 55 µm diameter orifice MJ-AB-01 (Microfab Technologies, Inc., Plano, TX, USA. One milliliter of inkjet-dispensed cells were collected and evaluated for cell viability using the tetrazolium compound (MTS) assays (Sigma-Aldrich, St. Louis, MO, USA). The mean cell viability for 3 repetitions was 97%.


打印

打印For uniform coverage (discrete or overlapping spots) it is often more efficient to move the substrate at constant speed while drops are generated continuously. For drop spacing is determined by the substrate speed and the drop generation frequency. MicroFab's control program allows both uniform spacing (drops generated at constant frequency) or non-uniform spacing (drops generated based on position - trigger from the encoder).
在该示例中,基板速度显着减慢以允许各个液滴的可视化。


通过MultiDrop Accretion分配更大的体积

Dispensing larger volumes at by fluid accretionLarger volumes are ink-jet deposited using multiple drops. The substrate is non-wetting and produces an almost hemispherical fluid accumulation. The individual droplets are observed above the accumulated fluid.



分配在测试板上的多个位置

Dispensing on a test plate这is an example of dispensing onto a test plate in a move-stop-dispense mode. Larger volumes are generated by depositing multiple drops at one location.



将水基溶液分配到PTFE膜上

Multidrop deposition in a 3x3 array onto PTFE membraneA water-based solution is dispensed onto a PTFE membrane as several 3 by 3 arrays with multiple drops at each location. The high contact angle of the solution on the membrane makes the liquid dispensed at each location ball-up. Individual droplets can be observed above the increasing volume dispensed at each dispensing location.


用支柱上的药物储存器印刷到心脏支架上

电影illustrates printing into the individual wells of a cardiac stent. The wells fabricated in the struts of the stent act as reservoirs to control the release of the drug. Ink-jet dispensing fulfills the requirement of depositing the drug compound only inside the wells. A second dispenser can be used to deposit polymer solutions between layers of drugs or to cap the well. The layers and cap can control the release kinetics of one or multiple drugs.


在支柱上用药物储存器印刷到“模拟”心脏支架上

通过在喷墨微散液中以协调的方式移动支架来涂覆模拟支架。通过连续地(旋转和轴向运动)移动支架并基于所需光点产生滴度来形成印刷。

印刷的轴向视图

支架印刷 - 轴向视图The video shows an axial view (camera along the stent axis) of the stent coating process. The end of the glass nozzle that is part of the piezoelectric microdispenser is observed on the center of the screen. The landing of the fluid droplets can be observed on the strut that is running from lower left to upper right and is in focus. The fluid appears as a continuous surface that moves as the strut moves under the microdispenser. At the end of the video (when the end of the stent is placed under the device) the fluid evaporating from the strut can be observed.

Lateral view of the printing

支架印刷 - 侧面视图视频展示了一个侧视图(相机垂直to the stent axis) of the stent coating process with the microdispenser glass tube being vertical on the center of the stage. The stent is positioned horizontally under the dispenser. In the video, this motion is done along one strut in one direction and along another strut in the opposite direction. When the stent moves towards the right the fluid deposited onto the struts can be barely seen as an appearing (deposition) and disappearing (evaporation) “bump” to the right of the ejected droplets. When the stent moves towards the left the “bump” appears to the left of the droplets.


蒸气生成

基于喷墨的蒸汽产生这部电影是使用喷墨分配的蒸汽一代的插图,如应用于Microfab的vaporjet™系统. An RTD is used as heater and sensor by rapidly switching from a power to a reading/measurement cycle. This implementation allows to very fast heating rates due to the small thermal mass. In this movie the heater is maintained at a constant temperature while 40 micron drops of isopropyl alcohol are generated at 4600Hz. The heater is set at 100 degrees Celsius. As the droplets land on the heater they evaporate and are taken to the outlet by the carrier flow. There is a balance between the evaporation and droplet generation rate. The outlet concentration can be changed by adjusting the drop generation frequency and/or the carrier flow rate. The vapor of interest could be the one form the fluid or any other solids dissolved in it. For fluids/solutions with higher boiling point, the temperature of the heater can be increased to prevent accumulation.


Dye assisted laser ablation

Dye assisted laser ablation染料通过牙釉质最小化入射激光束的反射。在电影中,沉积出激光纤维的对准。之后,在10Hz重复沉积一滴染料,然后重复染料滴落的序列。由染料吸收的能量导致去除齿材料。形成的火山口的尺寸略微在直径1毫米下。


JetLab®软件演示

电影说明使用JetLab®软件设置丢弃生成和打印简单模式的主要步骤。


Jetlab®滴p analysis demo

电影说明了JetLab®软件的使用来确定下降参数(直径,速度和轨迹角)。