Spruce Science
Spruce Science
  • Видео 19
  • Просмотров 96 452

Видео

Essential Tips for Solvent Concentration in Polyvinylpyrrolidone (PVP) Fiber Electrospinning
Просмотров 1602 месяца назад
Ethanol is an ideal solvent for electrospinning PVP fibers. A solvent concentration in the 50-57% range is effective for producing PVP fiber mats using the Electrospinning Machine 30kV from Spruce Science. In this video, we demonstrate three different cases of electrospinning PVP fibers, each with varying solvent concentrations. Table of Contents: 0:00 Introduction 0:07 Fiber Collection w. 49.7...
Fully Integrated Electrospinning Machine
Просмотров 2982 месяца назад
@sprucescience
Coaxial Electrospinning Could be the Future of Wound-dressing
Просмотров 3,5 тыс.Год назад
@sprucescience In this video, we introduce a coaxial electrospinner and its spinneret with two concentric needles, which has exciting potential for targeted drug delivery in wound dressings. We demonstrate how to use the coaxial electrospinner to create electrospun fiber mats with red markers, using a solution of PVP polymer and red ink. The electrospinning process is driven by an intense elect...
Electrospinning Machine 30kV | Demonstration
Просмотров 28 тыс.Год назад
@sprucescience You can use the Electrospinning Machine 30kV to make ultra small diameter fibers. You take the polymer solution and use a syringe pump to deliver it to the needle tip where high voltage is applied. Under the intense electric field, polymer fibers are charged and stretched while it travels through the air to the rotating collector. With an apparatus like this, you can conduct a lo...
Self-Assembling Wires | 10kV High Voltage Demonstration
Просмотров 7482 года назад
We will demonstrate self assembling wire network in this video. What you see are solder balls that self assembled under an electric field. The self-assembly process form a network that minimize the resistance. In the second part of the demonstration, we are going to use iron oxide, which is something you can collect at the beach. SpruceScience.com
Sausage making with a vacuum mixer
Просмотров 4262 года назад
#sausage #food #foodscience Making home made sausages with the Spruce Science vacuum mixer was exciting. Beef loin New York steak meat was used to make the sausages and the seasoning was mixed using the vacuum mixer. By mixing under vacuum, the seasoning is able to penetrate deeper into the meat for a richer flavor. Because the mixing was in an environment that is free of air, you are able to p...
NeoDen4 Pick and Place Machine Crashes | Part 2
Просмотров 6052 года назад
The NeoDen4 pick and place machine crashed because the controlling software failed to move the nozzle up to clearance height. You will see the nozzle slam into the rail feeder twice. After the first crash, the software attempts to move the head again without addressing the underling problem. I pressed the emergency pause button on the machine or else it would keep slamming into the rail. If any...
Motion Sequence Error on NeoDen4 Pick and Place Machine
Просмотров 1 тыс.2 года назад
The NeoDen4 machine software seems broken. Under normal conditions, the nozzle goes down in z depth to pick up part from feeder or place it on the PCB. It then moves back up to the clearance height before proceeding so that it doesn't crash into other things. However, this machine doesn't operate properly and the video captures moments when the machine moves with the nozzle in down position cau...
Paper spray ionization | soft ionization technique for mass spectrometry
Просмотров 3,9 тыс.2 года назад
@sprucescience Paper spray ionization is a type of ion source that generate ions. This simple and effective ion source uses paper as the primary facilitator that deliver the sample in a controlled manner that produce ions under the influence of an intense electric field. The sample is applied to a piece of paper and solvent is added. When high voltage is applied to the paper that contain the so...
California Lilac flower & Monsters toys in epoxy resin. How to use a Vacuum Mixer for resin casting
Просмотров 3143 года назад
Vacuum Mixer from Spruce Science is used to prepare crystal clear epoxy for resin casting California Lilac flower and Monsters toys. Vacuum mixer is a great tool for mixing anything of interest in a container that is free of air. It will elimiate bubbles and give you more consistent results because unwanted secondary reactions with Oxygen, Nitrogen and other atmospheric gases are avoided. spruc...
Electrospinning Composite Fibers | Zinc Oxide Dispersed in Polyvinylpyrrolidone (PVP)
Просмотров 4,6 тыс.3 года назад
In this video demonstration, we will show the electrospinning process for producing composite fibers from Zinc Oxide and Polyvinylpyrrolidone solution. There is a lot of research interest in nanocomposite fibers because you can enhance performance and characteristics. Electrospun fibers have an increase in surface area and by dispersing inorganic particles, you are able to modify the properties...
Electrospinning of Polyvinylpyrrolidone (PVP) | Electrospun Nanofibers
Просмотров 20 тыс.3 года назад
Electrospinning is the method of using a high voltage power supply to produce ultra small diameter fibers. Electrospinning process can be used to produce nanofibers from many synthetic and natural polymers. Some of the attractive properties of the electrospun nanofibers are the small diameter, high porosity and high surface-to-volume ratio. The polymer that you want to make nanofibers are mixed...
Planetary Motion Vacuum Mixer from Spruce Science will Eliminate Air Bubbles
Просмотров 4,8 тыс.3 года назад
​@sprucescience The Spruce Science vacuum mixer is a tool that allows you to mix various materials under atmospheric pressure. One of the main benefits of using a vacuum mixer is that it helps to avoid the incorporation of air bubbles and prevents unwanted secondary reactions with atmospheric gases. When working with polymers, it is important to mix the base and curing agent completely for prop...
Ball on a string in an intense electric field | 10kV high voltage demonstration
Просмотров 1,6 тыс.3 года назад
In this experiment, you will see a metal ball hanging on a string. The ball is electrically floating and is placed between two plates. 10 kilovolts is applied to one plate while the opposite side is grounded. Under the intense electric field, the aluminum ball will oscillate between the two plates. sprucescience.com/products/lab-mate-high-voltage-power-supply-10kv-2ma/
LabMate High Voltage Power Supply
Просмотров 21 тыс.4 года назад
LabMate High Voltage Power Supply
ナトリウムイオンをガストーチに流し込むする
Просмотров 1,6 тыс.4 года назад
ナトリウムイオンをガストーチに流し込むする
Vibrant Ion Trap with High Voltage Ion Generator [High Voltage Power Supply Demonstration]
Просмотров 1,1 тыс.4 года назад
Vibrant Ion Trap with High Voltage Ion Generator [High Voltage Power Supply Demonstration]
How to electrospray metal ions [6 kV High Voltage Demonstration]
Просмотров 2,6 тыс.4 года назад
How to electrospray metal ions [6 kV High Voltage Demonstration]