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Liquid deposition photolithography for submicrometer resolution three-dimensional index structuring with large throughput

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Light(Science & Applications) 2013年第1期2卷 209-214页

作者： adam c urness Eric D Moore Keith K Kamysiak Michael c cole Robert R McLeod Department of Electrical Engineering University of Colorado at BoulderBoulderCO 80309USA.

Photonic devices increasingly require three-dimensional control of refractive index,but existing fabrication methods such as femtosecond micromachining,multilayer lithography and bulk diffusion can only address a select scale range,are often limited in complexity or thickness and have low *** introduce a new fabrication method and polymeric material that can efficiently create mm^(3) optical devices with programmable,gradient index of refraction with arbitrary feature *** contrast of 0.1 is demonstrated,which is 100 times larger than femtosecond micromachining,and 20 times larger than commercial holographic *** is achieved by repetitive microfluidic layering of a self-developing photopolymer structured by projection *** process has the unusual property that total fabrication time for a fixed thickness decreases with the number of layers,enabling fabrication 10^(5) faster than femtosecond *** demonstrate the process by sequentially writing 100 layers to fabricate a mm thick waveguide array.

关键词： holographic photopolymers lithography photonic device fabrication single photon polymerization three-dimensional structuring

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clinical outcomes of cemented distal femur replacements with allpolyethylene tibial components for oncologic indications

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World Journal of Orthopedics 2023年第4期14卷 218-230页

作者： Alexander B christ Brian c chung Matthew urness Lucas W Mayer Brandon S Gettleman Nathanael DHeckmann Lawrence R Menendez Department of Orthopedic Surgery Keck School of Medicine of University of Southern CaliforniaLos AngelesCA 90033United States University of South carolina School of Medicine ColumbiaSC 29209United States

BAcKGROUND Endoprosthetic distal femoral replacement(DFR)is a well-established salvage procedure following resection of malignant tumors within the distal *** of an all-polyethylene tibial(APT)component is cost-effective and avoids failure due to locking-mechanism issues and backside wear,but limits modularity and the option for late liner *** to a paucity of literature we sought to answer three questions:(1)What are the most common modes of implant failure for patients undergoing cemented DFR with APT for oncologic indications?(2)What is the survivorship,rate of all-cause reoperation,and rate of revision for aseptic loosening of these implants?And(3)Is there a difference in implant survivorship or patient demographics between cemented DFRs with APT performed as a primary reconstruction vs those performed as a revision procedure?AIM To assess outcomes of cemented DFRs with APT components used for oncologic *** After Institutional Review Board approval,a retrospective review of consecutive patients who underwent DFR between December 2000 to September 2020 was performed using a single-institutional *** criteria consisted of all patients who underwent DFR with a GMRS®(Global Modular Replacement System,Stryker,Kalamazoo,MI,United States)cemented distal femoral endoprosthesis and APT component for an oncologic *** undergoing DFR for non-oncologic indications and patients with metal-backed tibial components were *** failure was recorded using Henderson's classification and survivorship was reported using a competing risks *** 55 DFRs(55 patients)with an average age of 50.9±20.7 years and average body mass index of 29.7±8.3 kg/m2 were followed for 38.8±54.9 mo(range 0.2-208.4).Of these,60.0%were female and 52.7%were *** majority of DFRs with APT in this cohort were indicated for oncologic diagnoses of osteogenic sarcoma(n=22,40.0%),giant cell tumor(n=9,16.4%),and metastatic carcin

关键词： Distal femoral replacement Modular Revision Dislocation Oncologic

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