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Mary Tilton

Bio: Mary Tilton is an academic researcher from Xerox. The author has contributed to research in topics: Materials science & Medicine. The author has an hindex of 2, co-authored 2 publications receiving 763 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the surface alignment of liquid crystals was studied and the interaction of electric field with liquid crystals, M.G. Clark dichroic LCDs, B. Bahadur optical computing, N. Johnson other types of LCDs and S. Kobayashi and A. Mochizuki thermochromic liquid crystals.
Abstract: Surface alignment of liquid crystals, T. Uchida and H. Sek interaction of electric field with liquid crystals, M.G. Clark dichroic LCDs, B. Bahadur optical computing, N. Clark and C. Johnson other types of LCDs, S. Kobayashi and A. Mochizuki thermochromic liquid crystals, I. Sage liquid crystal polymers, H. Finkelmann et al.

764 citations

Journal ArticleDOI
TL;DR: In this paper , a review of state-of-the-art 3D fabrication and bio-fabrication of biomedical platforms facilitated by 2D nanomaterials, with the comprehensive summary of studies focusing on the toxicity of these materials.

8 citations

Journal ArticleDOI
TL;DR: This paper describes 6.3-million-pixel active-matrix displays in monochrome and color with a diagonal dimension of 33 cm (13 in.), first discussed by Martin et al. in 1993.
Abstract: This paper describes 6.3-million-pixel active-matrix displays in monochrome and color (1.6 million color groups) with a diagonal dimension of 33 cm (13 in.), first discussed by Martin et al. in 1993. 1 These displays have the largest number of pixels of any AMLCDs thus far reported. The monochrome display is intended for office-automation applications where there is a requirement for electronically controlled image reproduction with characteristics similar to those of a conventional laser print. This display achieves the resolution, luminance, and viewing angle required for these applications through a binary driving scheme.

5 citations

Journal ArticleDOI
TL;DR: In this article , the authors investigated the environmental dependency of the mechanical responses of 3D printed porous scaffolds of poly(methyl methacrylate) (PMMA) Class IIa biomaterial that was based on triply periodic minimal surfaces.
Abstract: Functional cellular structures with controllable mechanical and morphological properties are of great interest for applications including tissue engineering, energy storage, and aerospace. Additive manufacturing (AM), also referred to as 3D printing, has enabled the potential for fabrication of functional porous scaffolds (i.e., meta-biomaterials) with controlled geometrical, morphological, and mechanical properties. Understanding the biomechanical behavior of 3D printed porous scaffolds under physiologically relevant loading and environmental conditions is crucial in accurately predicting the in vivo performance. This study was aimed to investigate the environmental dependency of the mechanical responses of 3D printed porous scaffolds of poly(methyl methacrylate) (PMMA) Class IIa biomaterial that was based on triply periodic minimal surfaces - TPMS (i.e., Primitive and Schoen-IWP). The 3D printed scaffolds (n = 5/study group) were tested under compressive loading in both ambient and fluidic (distilled water with pH = 7.4) environments according to ASTM D1621 standards. Outcomes of this study showed that compressive properties of the developed scaffolds are significantly lower in the fluidic condition than the ambient environment for the same topological and morphological group (p≤0.023). Additionally, compressive properties and flexural stiffness of the studied scaffolds were within the range of trabecular bone's properties, for both topological classes. Relationships between predicted mechanical responses and morphological properties (i.e., porosity) were evaluated for each topological class. Quantitative correlation analysis indicated that mechanical behavior of the developed 3D printed scaffolds can be controlled based on both topology and morphology.

1 citations

Journal ArticleDOI
TL;DR: In this article , the authors present new findings on the fatigue performance of L-PBF Ti-6Al-4V scaffolds designed based on triply periodic minimal surfaces (TPMSs).
Abstract: Variabilities imposed by the laser powder bed fusion (L-PBF) and structural design processes have resulted in deficient knowledge of structure-property relationships of the bone-inspired scaffolds (i.e., meta-biomaterials). Herein, we present new findings on the fatigue performance of L-PBF Ti-6Al-4V scaffolds designed based on triply periodic minimal surfaces (TPMSs). We found that for a similar porosity and applied stress-amplitude, Schoen-IWP scaffolds exhibit significantly higher (97%) (p<0.05) fatigue life when compared to the Primitive; however, Primitive scaffolds could more effectively mimic the compressive mechanical properties of trabecular bone. These findings help pave the path for spatial microarchitectural design of load-bearing orthopaedic implants.

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Patent
05 Nov 2003
TL;DR: In this article, a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δe) was defined for active-matrix display based on the ECB, VA, PS-VA, FFS, PALC or IPS effect.
Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δe), which contains at least one compound selected from the group of compounds of the formula I, II A and II B and at least one compound of the formula I* in which R0, R1, R2, R1*, X1, X2, A1, A1*, A2*, Z1, Z1*, Z2*, L1*, L2*, p, q, v, m and m* are as defined in Claim 1, and to the use thereof for an active-matrix display based on the ECB, VA, PS-VA, FFS, PALC or IPS effect.

716 citations

Journal ArticleDOI
27 Mar 1998-Science
TL;DR: This approach to the detection of ligand-receptor binding does not require labeling of the analyte,does not require the use of electroanalytical apparatus, provides a spatial resolution of micrometers, and is sufficiently simple that it may find use in biochemical assays and imaging of spatially resolved chemical libraries.
Abstract: Liquid crystals (LCs) were used to amplify and transduce receptor-mediated binding of proteins at surfaces into optical outputs. Spontaneously organized surfaces were designed so that protein molecules, upon binding to ligands hosted on these surfaces, triggered changes in the orientations of 1- to 20-micrometer-thick films of supported LCs, thus corresponding to a reorientation of ∼10 5 to 10 6 mesogens per protein. Binding-induced changes in the intensity of light transmitted through the LC were easily seen with the naked eye and could be further amplified by using surfaces designed so that protein-ligand recognition causes twisted nematic LCs to untwist. This approach to the detection of ligand-receptor binding does not require labeling of the analyte, does not require the use of electroanalytical apparatus, provides a spatial resolution of micrometers, and is sufficiently simple that it may find use in biochemical assays and imaging of spatially resolved chemical libraries.

455 citations

Journal ArticleDOI
TL;DR: In this paper, the authors reviewed the extended Cauchy model and the four-parameter model for describing the wavelength and temperature effects of liquid crystal (LC) refractive indices.
Abstract: This paper reviews the extended Cauchy model and the four-parameter model for describing the wavelength and temperature effects of liquid crystal (LC) refractive indices. The refractive indices of nine commercial LCs, MLC-9200-000, MLC-9200-100, MLC-6608, MLC-6241-000, 5PCH, 5CB, TL-216, E7, and E44 are measured by the Multi-wavelength Abbe Refractometer. These experimental data are used to validate the theoretical models. Excellent agreement between experiment and theory is obtained.

354 citations

Patent
23 Dec 2008
TL;DR: In this article, the use of liquid crystal media for electro-optical displays, especially those having active matrix addressing based on the ECB (electrically controlled birefringence) or VA (vertically aligned) mode or similar modes, is described.
Abstract: Liquid crystal (LC) media based on a mixture of polar compounds having negative dielectric anisotropy, their use in electro-optical displays, especially those having active matrix addressing based on the ECB (electrically controlled birefringence) or VA (vertically aligned) mode or similar modes, and LC displays of these types, are described.

353 citations

Journal ArticleDOI
TL;DR: A comprehensive overview of phase transition studies can be found in this article, where the authors identify the essential key concepts and points of difficulty associated with the study of phase transitions and discuss the most widely used experimental techniques for measuring these transition properties.

308 citations