OPTICALLY TUNABLE DIFFRACTION GRATINGS in Java

Development qr bidimensional barcode in Java OPTICALLY TUNABLE DIFFRACTION GRATINGS
11.5. OPTICALLY TUNABLE DIFFRACTION GRATINGS
reading qr code 2d barcode with java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
8 7 Diffraction efficiency (%) 6 5 4 3 2 1 Off 0 0 20 40 60 80 100 120 140 160 Time (s) (a) On
Qrcode writer for java
generate, create qr code none on java projects
6 Diffraction efficiency (%) 5 4 3 2 1 0 0 50 100 150 200 Time (ms) (b) 250 300 350 On Off
QR Code 2d Barcode scanner with java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Figure 11.20. Switching of diffraction ef ciency for a grating formed in the selfassembled LC gel with 1% gelator and 2% chiral dopant: (a) between 0 V (off-state) and 20 V (on-state) of a square-wave electric eld and (b) dynamic response to a pulse of 200-ms duration. Source: Zhao and Tong, 2003. Reprinted with permission.
Get bar code with java
use java bar code implementation topaint bar code in java
200 ms can be used to estimate the high diffraction turn-on time (B65 ms) and the turn-off time (B50 ms) (Fig. 11.20b).
recognizing barcode in java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
11.5. OPTICALLY TUNABLE DIFFRACTION GRATINGS 11.5.1. Dynamic Holographic Gratings
Qr-codes generation with visual c#
use .net vs 2010 qr barcode generation touse quick response code for visual c#
How to use azobenzene-containing LCs or polymers to record a grating that can be switched on and off using light Ikeda and coworkers showed that this could be realized using holographic recording on SCLCPs containing azobenzene mesogens (Yamamoto et al., 2001). When the writing beams (488 nm) are applied to a
Integrate qr code in .net
generate, create qr bidimensional barcode none for .net projects
CHAPTER 11: TUNABLE DIFFRACTION GRATINGS BASED ON AZO MATERIALS
Qr Bidimensional Barcode printer in .net
using barcode maker for vs .net control to generate, create qr image in vs .net applications.
Disapperance of modulation in the refractive index Removal of grating Off
Control denso qr bar code size with visual basic.net
qr bidimensional barcode size for visual basic.net
Induction of periodic modulation of the refractive index Formation of grating On
Bar Code barcode library in java
using java todraw bar code with asp.net web,windows application
Figure 11.21. Schematic illustration of the use of azobenzene-containing side-chain liquid crystalline polymers to record light-controlled dynamic grating on the basis of photochemical phase transition. Source: Yamamoto et al., 2001. Reprinted with permission.
Build ucc ean 128 on java
using java toinclude ucc - 12 in asp.net web,windows application
polymer lm at a temperature close to the Tni, diffraction of a probe beam (633 nm) occurs because of the appearance of a refractive index modulation in the lm, although the diffraction is gone when the writing beams are turned off. The mechanism responsible for this switching proposed by Ikeda s group is shown in Fig. 11.21. In irradiated areas, corresponding to bright fringes of the interference pattern, the trans cis photoisomerization of azobenzene mesogens induces the nematic-to-isotropic phase transition, resulting in the index modulation. Once the writing laser beams are turned off, the fast thermally activated cis trans backisomerization brings azobenzene mesogens back to the nematic phase, which erases the index difference and thus turns off the diffraction of the probe beam. Figure 11.22 shows an example of the repeated writing beam controlled diffraction ef ciency. This result was obtained using a lm of poly{6-[4-(4-ethoxyphenylazo)phenoxy]hexyl methacrylate} (following structure): at 1431C, with a power of 127 mW/cm2 for the writing beams and an exposure time of 62.5 ms, the diffraction switching-on and switching-off times were estimated to be 50 and 600 ms, respectively, and the index modulation was B0.08. The switching times were found to depend on a number of parameters including temperature, writing beams intensity, and chemical structure of the used azobenzene SCLCP.
Java upc code printingon java
generate, create upc a none with java projects
CH 3 CH 2 C C O
Java gtin - 12 generatingin java
generate, create upc - e1 none in java projects
O (CH 2)6 O N N OC2H 5
Connect bar code for .net
using barcode printer for rdlc control to generate, create barcode image in rdlc applications.
11.5. OPTICALLY TUNABLE DIFFRACTION GRATINGS
Control ean128 image on word documents
generate, create ean128 none for microsoft word projects
4 (%)
Asp.net Crystal code 39 full ascii integrationfor .net c#
generate, create 3 of 9 barcode none in c# projects
15 Time (s)
Asp.net Aspx Crystal ean13 generatorin c#
use web.net crystal ean13+5 integrated toproduce ean13+2 for c#
Figure 11.22. Switching behavior of diffracted probe light with a lm of the shown azobenzene-containing side-chain liquid crystalline polymer at 143 1C exposed to writing beams (127 mW/cm2) for 62.5 ms. Source: Yamamoto et al., 2001. Reprinted with permission.
Qr Bidimensional Barcode implement in microsoft excel
using barcode generation for office excel control to generate, create qr code image in office excel applications.
The principle of such writing beam controlled dynamic holographic gratings should be applicable to many azobenzene polymers or LCs. The grating formation time, related to the trans cis photoisomerization, should always be fast, but the grating erasure time, determined by the thermal relaxation of cisazobenzene, may be much longer depending on the material and experimental conditions. The interest of Ikeda s work is the use of the photoisomerizationinduced phase transition (termed photochemical phase transition ) in azobenzene SCLCPs to amplify the difference in refractive index that is required for highly ef cient diffraction. Nevertheless, the polymer needs to be held at temperatures close to Tni to ensure fast photochemical phase transition and thermal relaxation of cis-azobenzene, which determine the diffraction switchingon and switching-off times.
Attach code 39 extended in vb
generate, create ansi/aim code 39 none with visual basic projects
11.5.2. Optically Tunable Diffraction Gratings in Polymer-Stabilized Liquid Crystals
Bar Code barcode library with .net
generate, create barcode none with .net projects
11.5.2.1. Materials Design and Switching Mechanism. The dynamic holographic grating recorded with azobenzene SCLCPs is erased once the writing beams are turned off. It is of interest to develop materials with which one can record a stable diffraction grating that, after formation, can be repeatedly
CHAPTER 11: TUNABLE DIFFRACTION GRATINGS BASED ON AZO MATERIALS
switched using light. Using photopolymerization-induced phase segregation, we demonstrated that this could be done with an azobenzene polymer stabilized nematic LC (Tong et al., 2005b). The diffraction ef ciency of probe light through such a grating can be switched between high and low values with UV and visible light as a result of the photoisomerization of the azobenzene chromophore. In addition, since the grating is made with LC-based materials, the switching of diffraction ef ciency can also be achieved by an electric eld that controls the LC orientation. Therefore, the grating displays a dual-mode (optical and electrical) tunability. The design principle for the material leading to the grating formation is schematized in Fig. 11.23. An azobenzene monomer is dissolved in a nematic LC, together with a photoinitiator (not shown). The homogeneous mixture is then exposed to light through a grating photomask for photopolymerization. Similar to the grating formation using PDLCs (Sutherland et al., 1994), as polymerization takes place only in irradiated areas, formation of polymer results in diffusion of the monomer from nonirradiated areas into the irradiated areas. This process expels the LC from irradiated areas as more polymers are formed and solidi ed, the consequence of which should be the segregation of the polymer from the LC host leading to the formation of a permanent volume grating. However, it is likely that a small amount of the azobenzene monomer would remain dissolved in the