--3d printing and beyond desktop manufacture and its ... · --3d printing and beyond desktop...
Post on 28-Jun-2020
2 Views
Preview:
TRANSCRIPT
--3D Printing and beyond
Desktop manufacture and its application in scientific research
Song Xu, Ph.D.
Sr. Application scientist
Find me on Linked-in
And join the:
Page
Desktop Manufacturing Makes It Possible
ADesktop manufacture
Everybody can build!!
Page
Focus of this Presentation
Exactly how useful is the 3D printing?
What else beyond 3d printing?
Page
Recall the greatest inventions of ancient China 2 of 4 are about spread of knowledge
Paper printing gun powder compass
Page
Recommended reading (The World Is Flat)
The trend of civilization is toward the spread of knowledge and
technology
Page
• Road, highway, aircraft, high speed
railway (transportation)
• Language, literature, printing, phone,
computer, internet (information)
• Workshop, factory, ?? (manufacture)
The trend of civilization is toward the spread of knowledge and
technology, which empower individual toward equality
Page
The last information revolutions: the industrialization of printing
Page
The the next information revolutions: desktop publishing
Page
Manufacture is undergoing similar path
Initial manufacture are done by the master hands
Page
For the past 100 years, mass production industry had little change: standardization, scale and efficiency
Page
Then comes the computer numerical controlled machines(CNC)
Emerging of computer controlled machines allows small scale production
However, the computer controlled machining was very expensive
Page
Accurate precise step motors
replaced capable hands,
computer replaced machining
procedures
The basics of computer numerical controlled machines
Page
There is ongoing revolution in manufacturing: desktop machine that has PC GUI based operation
CNC water jet, CNC mill and CNC router
Page
CNC lathe CNC laser
Several different kinds of ordinary CNC machines
Page
CNC 3D printer
Page
And the low cost CNC machines
$700 CNC Mill
$1000 CNC laser
$3000 CNC Mill
Page
Want to send me a Christmas gift : email to me。
Desk top manufacture is the an ongoing revolution
Page
3D printing : precision adding of material
Page
melting add glue to powder
Photo sensitive polymer laser melting
3D printing : precision adding of material
Page
The limitation of 3D printing: lack of control of material property
Page
Problems of 3D printing
Page
Other affordable desktop production tools
Page
CNC laser cutting
Page
CNC laser cutting and its advantage
Page
CNC laser cutting and its advantage: pure 2D design easy to learn
Page
CNC laser cutting and its advantage: pure 2D design easy to learn
Page
The ultimate 3D machining: 5 axis CNC mill Suggested reading: go to www.youtube.com search for 5 Axis CNC art, watch
this video
Page
The basics to learn desktop manufacturing: start with CAD
Group/Presentation
Title
Agilent Restricted
Page
28
Page
The basic of CAD: turn an idea to a precised defined 3D drawing
Page
The basic of CAD: turn an idea to a precised defined 3D drawing
Page
What is CAM? (computer aided manufacture)
CAM turn a designed shape into a machine tool path code (G code)
Page
Easy to learn and sometimes free trial amateur CAM
Page
CAM turns a designed shape into reality
Page
Step 1：design of 2D vector
CAM turns a designed shape into reality
Page
Step 2: define the depth of each cutting
CAM turns a designed shape into reality
Page
Step 3: machine code tool paths generation by computer
CAM turns a designed shape into reality
Page
Step 3: simulation of machine tool path
CAM turns a designed shape into reality
Page
Step 3: simulation of machine tool path
CAM turns a designed shape into reality
Page
Step 4: actual cutting of a 2.5D part
CAM turns a designed shape into reality
Page
CAM design of a part with complicated curved shape
Page
CAM design and machining of a thin metal sheet
Page
CAM design and machining of a thin metal sheet leads us to the invention of sample holder for soft biological tissue samples
Page
CAM design and machining of part made of soft materials
Page
CAM design and machining of part made of soft materials
Page
See what a desktop CNC mill can do in 30 min
Page
My basement factory (total cost $7000)
Page
Fixing foil for biological tissue type of sample:
Suited to fix very soft sample that are thick inside a dish, or fluid
cell
Page
Rock type sample fixing foil:
Fix a thick sample inside a dish for fluid imaging
Page
Hydrophobic flat liquid cell: liquid cell does not have raised
edge. Easy to view tip-sample distance. Liquid contained by
hydrophobic surface tension
Page
Disposable PTFE liquid cell used with microscopic glass slide.
PTFE naturally adhere to glass to form a liquid cell
Page
Sample holder for contact lens
Page
Single piece liquid cell: non-leaking design with bottoms. Can be
machined to contain samples such as mica or HOPG. Tight fit cutout
hold HOPG in place
Page
Square sample liquid cell (for 22mm microscope cover slip)
Page
Sample holder for single fiber/hair
Page
Liquid cell for fiber/hair type sample: hair sample wrap around
the copper frame. A square tension ring push sample against
the bottom. Domed cell bottom for fiber sample support.
Illumination help tip to locate sample
Page
Sample holder for precious metal bead single crystal
Page
Side mount sample holder for AFM
Page
Stading mount sample holder for AFM
Page
LED modulated illumination sample holder: LED power provided by controller,
illumination switchable between bottom illumination and side illumination
Page
Optical fiber Amplitude modulated illumination sample holder: liquid crystal shutter
modulation signal provided by AC controller
Page
Sample stage with controlled illumination
This sample stage with controlled illumination module
consist the following parts:
1. A liquid crystal shutter the controls the light from the
light source. The shutter can be programmed to
release a set time by sending a square wave, or it can
be set to modulated with a sine wave. A regular liquid
crystal shutter has a response frequency of 1000 Hz,
high speed shutter can perform 10000Hz.
2. Liquid filled optical fiber to guide the light into the
sample stage.
3. Two different sample stage design, back illumination
for transparent sample and side illumination for non-
transparent samples to be used on AFM
Page
Laser illuminator with beam splitter and photodetector
Page
An electrical chemical cell for 5500 AFM: designed to be used inside
a glove box. There is no handling of small parts. Sample stage built
using PTFE. All parts are low cost and can be replaced
Page
Sample ultrasonic modulation stage
1. Thin film piezo stack oscillating the sample between 200Hz to 6MHz. AFM tip detects the oscillation amplitude and phase
of local area, and shows contrast due to difference of sample softness and viscosity.
2. A special small liquid cell can be mounted
Page
Sample ultrasonic modulation stage for liquid cell and petridish
1. Thin film piezo stack oscillating the sample between 200Hz to 6MHz. AFM tip detects the oscillation amplitude and phase
of local area, and shows contrast due to difference of sample softness and viscosity.
2. Can be used with 35mm dish, and specially designed liquid cell。
Page
67
154.2
163.8
144.7
Polymeric gel containing fiber structures imaged with Sample
modulation topography amplitude phase
kH
z
Image size 8 µm2
unpublished work by Lu Lu (Garno Group), LSU, Baton Rouge
Page
Fluid heat exchange cooling stage Using heat exchange fluid such as water or ethanol, cooled or heated
fluid passively manipulated the temperature of sample cell.
Page
Sample holder for parallel magnetization
Page
Sample holder for parallel magnetization
A +- 8000 gauss magnetic field inside the gap
Page
Side view optical microscope for 5500 AFM
Page
A few words about Keysight Techology AFM
Page
Vacuum popping sample holder Vacuum operated sample holder allow the sealed sample to be transferred from glove box
to SEM and the cover is opened by vacuum.
Page
Slipper locker 22mm cover slip can be washed and processed in the locker.
No glue or screws are used. All parts assembled with friction
Page
Slipper rack Sample of various sizes can be loaded and washed, designed to be fit inside a beaker
No glue or screws used to assemble
Rack made of Acetyl/teflon blend
Page
Nano crystal sensor research kit: inter-digited electrode and small
volum gas testing chamber
Page
top related