Ware, Taylor H.
Permanent URI for this collectionhttps://hdl.handle.net/10735.1/4978
Taylor Ware returned to UTD in 2015 as an Assistant Professor in the Department of Bioengineering. After graduating from UT Dallas with a PhD he did postdoctoral work at the Air Force Research Laboratory. His research interests include:
- Biomaterials
- Stimuli-responsive and programmable materials
- Microfabrication
- Smart implantable devices
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Browsing Ware, Taylor H. by Author "0000-0001-7996-7393 (Ware, TH)"
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Item Molecularly-Engineered, 4D-Printed Liquid Crystal Elastomer Actuators(WILEY-VCH Verlag GmbH, 2018-11-27) Saed, Mohand O.; Ambulo, Cedric P.; Kim, Hyun; De, Rohit; Raval, Vyom; Searles, Kyle; Siddiqui, Danyal A.; Cue, John Michael O.; Stefan, Mihaela C.; Shankar, M. Ravi; Ware, Taylor H.; 0000-0001-5154-6378 (Saed MO); 0000-0001-7996-7393 (Ware, TH); Saed, Mohand O.; Ambulo, Cedric P.; Kim, Hyun; De, Rohit; Raval, Vyom; Searles, Kyle; Siddiqui, Danyal A.; Cue, John Michael O.; Stefan, Mihaela C.; Ware, Taylor H.Three-dimensional structures that undergo reversible shape changes in response to mild stimuli enable a wide range of smart devices, such as soft robots or implantable medical devices. Herein, a dual thiol-ene reaction scheme is used to synthesize a class of liquid crystal (LC) elastomers that can be 3D printed into complex shapes and subsequently undergo controlled shape change. Through controlling the phase transition temperature of polymerizable LC inks, morphing 3D structures with tunable actuation temperature (28 ± 2 to 105 ± 1 °C) are fabricated. Finally, multiple LC inks are 3D printed into single structures to allow for the production of untethered, thermo-responsive structures that sequentially and reversibly undergo multiple shape changes.Item Molecularly-ordered Hydrogels with Controllable, Anisotropic Stimulus Response(Royal Society of Chemistry, 2019-05-03) Boothby, Jennifer M.; Samuel, Jeremy; Ware, Taylor H.; 0000-0001-7996-7393 (Ware, TH); 0000-0003-3095-0640 (Boothby, JM); Boothby, Jennifer M.; Samuel, Jeremy; Ware, Taylor H.Hydrogels which morph between programmed shapes in response to aqueous stimuli are of significant interest for biosensors and artificial muscles, among other applications. However, programming hydrogel shape change at small size scales is a significant challenge. Here we use the inherent ordering capabilities of liquid crystals to create a mechanically anisotropic hydrogel; when coupled with responsive comonomers, the mechanical anisotropy in the network guides shape change in response to the desired aqueous condition. Our synthetic strategy hinges on the use of a methacrylic chromonic liquid crystal monomer which can be combined with a non-polymerizable chromonic of similar structure to vary the magnitude of shape change while retaining liquid crystalline order. This shape change is directional due to the mechanical anisotropy of the gel, which is up to 50% stiffer along the chromonic stack direction than perpendicular. Additionally, we show that the type of stimulus to which these anisotropic gels respond can be switched by incorporating responsive, hydrophilic comonomers without destroying the nematic phase or alignment. The utility of these properties is demonstrated in polymerized microstructures which exhibit Gaussian curvature in response to high pH due to emergent ordering in a micron-sized capillary. © 2019 The Royal Society of Chemistry.Item Responsive, 3d Electronics Enabled by Liquid Crystal Elastomer Substrates(American Chemical Society, 2019-05-09) Kim, Hyun; Gibson, J.; Maeng, Jimin; Saed, Mohand O.; Pimentel, K.; Rihani, Rashed T.; Pancrazio, Joseph J.; Georgakopoulos, S. V.; Ware, Taylor H.; 0000-0001-7996-7393 (Ware, TH); Kim, Hyun; Maeng, Jimin; Saed, Mohand O.; Rihani, Rashed T.; Pancrazio, Joseph J.; Ware, Taylor H.Traditional electronic devices are rigid, planar, and mechanically static. The combination of traditional electronic materials and responsive polymer substrates is of significant interest to provide opportunities to replace conventional electronic devices with stretchable, 3D, and responsive electronics. Liquid crystal elastomers (LCEs) are well suited to function as such dynamic substrates because of their large strain, reversible stimulus response that can be controlled through directed self-assembly of molecular order. Here, we discuss using LCEs as substrates for electronic devices that are flat during processing but then morph into controlled 3D structures. We design and demonstrate processes for a variety of electronic devices on LCEs including deformation-tolerant conducting traces and capacitors and cold temperature-responsive antennas. For example, patterning twisted nematic orientation within the substrate can be used to create helical electronic devices that stretch up to 100% with less than 2% change in resistance or capacitance. Moreover, we discuss self-morphing LCE antennas which can dynamically change the operating frequency from 2.7 GHz (room temperature) to 3.3 GHz (-65 °C). We envision applications for these 3D, responsive devices in wearable or implantable electronics and in cold-chain monitoring radio frequency identification sensors. ©2019 American Chemical Society.