CN101699329A - Electrowetting technology-based light fluid filter - Google Patents
Electrowetting technology-based light fluid filter Download PDFInfo
- Publication number
- CN101699329A CN101699329A CN200910174856A CN200910174856A CN101699329A CN 101699329 A CN101699329 A CN 101699329A CN 200910174856 A CN200910174856 A CN 200910174856A CN 200910174856 A CN200910174856 A CN 200910174856A CN 101699329 A CN101699329 A CN 101699329A
- Authority
- CN
- China
- Prior art keywords
- glass plate
- droplet
- insulating layer
- layer
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title description 7
- 239000011521 glass Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 12
- 239000003086 colorant Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000000862 absorption spectrum Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000975 dye Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000000799 fluorescence microscopy Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Landscapes
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
本发明公开了基于电润湿技术的光流体滤波器由液滴驱动单元和法布里-珀罗滤波单元组成；其中液滴驱动单元由控制电极、接地电极、底部玻璃板、顶部玻璃板、液体层、绝缘层组成，其中绝缘层和顶部玻璃板之间间隔形成疏水层，控制电极根据液滴的运动状态加上50V左右的驱动电压，表面张力将驱动液滴运动至预定位置，液滴和疏水层间的接触角和不同侧的表面张力通过不同控制电极的电压来控制，随着施加电压V的改变使液体在绝缘层表面接触角发生改变，从而得到不同的滤波波形，通过与第一级液滴滤波单元效果相配合，达到粗略-精细滤波相结合的两级滤波效果，本发明大大提高了调谐范围和带宽，具有灵活性和可控性好、设计合理、操作简便等特点。
The invention discloses that an optofluidic filter based on electrowetting technology is composed of a droplet drive unit and a Fabry-Perot filter unit; wherein the droplet drive unit is composed of a control electrode, a ground electrode, a bottom glass plate, a top glass plate, Composed of a liquid layer and an insulating layer, a hydrophobic layer is formed between the insulating layer and the top glass plate, and the control electrode applies a driving voltage of about 50V according to the movement state of the droplet, and the surface tension will drive the droplet to move to a predetermined position. The contact angle between the hydrophobic layer and the surface tension on different sides is controlled by the voltage of different control electrodes. With the change of the applied voltage V, the contact angle of the liquid on the surface of the insulating layer changes, thereby obtaining different filter waveforms. The effect of the first-stage droplet filtering unit is coordinated to achieve the two-stage filtering effect of the combination of coarse and fine filtering. The invention greatly improves the tuning range and bandwidth, and has the characteristics of good flexibility and controllability, reasonable design, and easy operation.
Description
Technical field
The present invention relates to a kind of light fluid wave filter, relate in particular to light fluid wave filter based on electrowetting technology.
Background technology
In the prior art field, tunable optical filter is in modern optical communication systems, sensor network and biomedical imaging field all play an important role, (λ＞3um) has tunable filtering performance preferably to traditional fabry-perot filter in mid and far infrared light district, but at visible region, adjustable resonant cavity size will reduce (w=200nm～300nm) along with reducing of wavelength, because the Van der Waals in the micro devices will make resonant cavity gross distortion and even absorption mutually under this size, traditional fabry-perot filter will be difficult to make and operate as normal, can't realize the change and the controlled motion orientation and velocity of drop state.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of Electrowetting that utilizes to realize electric tunable in conjunction with fabry-perot filter, improve tuning range and bandwidth greatly, guaranteed to comprise the entire device light fluid wave filter that dwindles dimensionally of wave filter.
For realizing above technical scheme, the technical scheme that patent of the present invention adopts is:
Light fluid wave filter based on electrowetting technology is made up of drop driver element and Fabry-Perot filter unit; Wherein the drop driver element places between Fabry-Perot filter unit and the lens unit.
Described drop driver element is made up of control electrode, ground-electrode, bottom glass plate, top glass plate, liquid level, insulation course, is bottom glass plate, control electrode, insulation course, liquid level, ground-electrode, top glass plate from bottom to up successively; Wherein liquid level places between top glass plate and the insulation course, wherein form hydrophobic layer between insulation course and the top glass plate at interval, control electrode adds driving voltage about 50V according to the motion state of drop, surface tension will drive liquid drop movement to the precalculated position, contact angle between drop and hydrophobic layer is controlled by the voltage of different control electrodes with the surface tension of homonymy not, change at the surface of insulating layer contact angle along with the change that applies voltage V makes liquid, thereby obtain different filtering waveforms.
Described liquid level is made up of the different colours drop.
The present invention is by electric moistening technology, utilize coloured drop as the filtering material, to use the various combination of different colours drop to place light path to constitute the filter effect of first order filtering system, utilize the contact stress of liquid and hydrophobic solid layer and surface tension as driving, contact angle between drop and hydrophobic layer is controlled by the voltage of different control electrodes with the surface tension of homonymy not, the Fabry-Perot filter unit places the lower end of drop driver element, the high order wavelength that utilizes all to leach, formation leaches the peak sequence, match with first order drop filter unit effect again, reach the two-stage filter effect that rough one meticulous filtering combines, combination by drop filter unit and Fabry-Perot filter unit, realize electric tunable, improved tuning range and bandwidth greatly, it is good to have dirigibility and controllability, reasonable in design, characteristics such as easy and simple to handle.
Description of drawings
Fig. 1 is the exemplary applications synoptic diagram of the present invention in medical imaging;
Fig. 2 is a drop control system schematic diagram of the present invention (side view);
Fig. 3 is drop control system movement effects figure;
Fig. 4 is the synoptic diagram that changes along with the change contact angle θ that applies voltage V;
Fig. 5 is the absorption spectrum and the stack absorption spectrum of different dyes;
Embodiment:
As shown in Figure 1, form by drop driver element 1 and Fabry-Perot filter unit 2 based on the light fluid wave filter of electrowetting technology; Wherein drop driver element 1 places between Fabry-Perot filter unit 2 and the lens unit.
As shown in Figure 2, wherein drop driver element 1 is made up of control electrode 3, ground-electrode 4, bottom glass plate 5, top glass plate 6, liquid level 7, insulation course 8, wherein form hydrophobic layer 9 between insulation course 8 and the top glass plate 6 at interval, drop and the contact angle of 9 of hydrophobic layers are controlled by the voltage of different control electrodes 3 with the surface tension of homonymy not, by adding driving voltage about 50V according to the motion state of drop between control electrode, as shown in Figure 3, surface tension will drive liquid drop movement to position that we want.
As shown in Figure 4, utilize the contact stress of liquid and hydrophobic solid layer and surface tension as driving, contact angle between drop and hydrophobic layer is controlled by the voltage of different control electrodes with the surface tension of homonymy not, along with the change that applies voltage V drop and hydrophobic layer contact angle θ is changed.
As shown in Figure 5, drop driver element as first order filtering system will be with coloured drop as the filtering material, the optical absorption spectra broad of liquid dyes, thereby needing what drop driver element stack to reach suitable bandwidth and to see through/absorptance, Fig. 5 has shown the absorption spectrum and the stack spectrum of several different materials.M, L, Br, K, O represent different dyestuffs, and 1 is the absorption spectrum after the stack.When medical science fluorescence imaging endoscope requires fluorescence signal to detect by filtering, the entire device that guarantees to comprise wave filter dwindling dimensionally.
The present invention realizes electric tunable by the combination of drop filter unit and F-P filtering unit, has greatly improved tuning range and bandwidth, has the characteristics such as flexibility and controllability are good, reasonable in design, easy and simple to handle.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910174856A CN101699329A (en) | 2009-10-19 | 2009-10-19 | Electrowetting technology-based light fluid filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910174856A CN101699329A (en) | 2009-10-19 | 2009-10-19 | Electrowetting technology-based light fluid filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101699329A true CN101699329A (en) | 2010-04-28 |
Family
ID=42147791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910174856A Pending CN101699329A (en) | 2009-10-19 | 2009-10-19 | Electrowetting technology-based light fluid filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101699329A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865928A (en) * | 2010-05-06 | 2010-10-20 | 大连理工大学 | A method for manipulating micro-droplets on superhydrophobic surfaces based on electric field interaction |
| CN102095770A (en) * | 2010-11-22 | 2011-06-15 | 复旦大学 | Electrochemical sensor chip based on digital microfluidic technology |
| CN104375266A (en) * | 2014-11-25 | 2015-02-25 | 四川大学 | Light switcher based on droplet load light filter |
| CN108080041A (en) * | 2016-11-21 | 2018-05-29 | 胡丛余 | Minisize fluid actuator |
| CN109633889A (en) * | 2018-11-30 | 2019-04-16 | 重庆秉为科技有限公司 | Electric moistening display apparatus based on interference phenomenon |
-
2009
- 2009-10-19 CN CN200910174856A patent/CN101699329A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865928A (en) * | 2010-05-06 | 2010-10-20 | 大连理工大学 | A method for manipulating micro-droplets on superhydrophobic surfaces based on electric field interaction |
| CN101865928B (en) * | 2010-05-06 | 2012-07-18 | 大连理工大学 | Super-hydrophobic surface micro-droplet operation and control method based on electric field effect |
| CN102095770A (en) * | 2010-11-22 | 2011-06-15 | 复旦大学 | Electrochemical sensor chip based on digital microfluidic technology |
| CN104375266A (en) * | 2014-11-25 | 2015-02-25 | 四川大学 | Light switcher based on droplet load light filter |
| CN108080041A (en) * | 2016-11-21 | 2018-05-29 | 胡丛余 | Minisize fluid actuator |
| CN108080041B (en) * | 2016-11-21 | 2023-10-20 | 胡丛余 | Micro fluid actuator |
| CN109633889A (en) * | 2018-11-30 | 2019-04-16 | 重庆秉为科技有限公司 | Electric moistening display apparatus based on interference phenomenon |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101699329A (en) | Electrowetting technology-based light fluid filter | |
| KR101866873B1 (en) | Device and method for variable curvature | |
| KR101969852B1 (en) | Microfluidic device and method of control the fluid included the same | |
| US20110075245A1 (en) | Full Color Range Interferometric Modulation | |
| CN107690597B (en) | Optical device with variable aperture | |
| KR20140031899A (en) | Spectrum filtering for visual displays and imaging having minimal angle dependence | |
| CN106918927A (en) | Optical modulation device and Optical devices including diectric antenna | |
| EP2442169A3 (en) | Microelectromechanical device with optical function separated from mechanical and electrical function | |
| KR101810573B1 (en) | Color filter | |
| JP7022127B2 (en) | Light beam processing device | |
| JP2010079097A (en) | Optical element, imaging device and driving method | |
| CN103257445B (en) | A kind of flexible electrical moisten display device | |
| US9207448B2 (en) | Apparatus for adjusting aperture using microelectrofluidic method | |
| CN108594502B (en) | Filter of liquid crystal tuning plasmon induced transparent and Fabry cavity hybrid mode | |
| JP2008525836A5 (en) | ||
| KR20150054544A (en) | Micro electric Liquid Device and Apparatus included the same | |
| CN102799013A (en) | Polarization-irrelevant tunable Fabry-Perot filter | |
| TWI471598B (en) | Tunable transmissive display system with electro-wetting and interference | |
| Wang et al. | Micro/nanofabrication of heat management materials for energy-efficient building facades | |
| CN106185784A (en) | MEMS infrared light source based on wet pre-release structure and preparation method thereof | |
| CN107065172B (en) | A Broad Spectrum Display Covering Visible to Infrared Bands | |
| CN115793342B (en) | All-solid-state multichannel dynamic adjustable spectrum filter device and preparation method thereof | |
| US20070164981A1 (en) | Display element | |
| CN102096266B (en) | Manufacturing method of liquid crystal optical lens | |
| CN205015575U (en) | Tunable wavelength's glass liquid crystal optics filter configuration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100428 |