Surfaces implantation

The damage and high concentrations of lattice delects, resulting from atomic displacements produced by the incident alums, can change the chemical reactivity and mechanical hardness of a treated surface, Implantation cun enhance the diffusion of impurities already deposited in a substrate, presumably through the motion of the high concentrations of lattice defects produced by the incident ions. 

Jasty MC, Bragdon C, Burke D, O Connor D, Lowenstein J, Harris WH. In vivo skeletal responses to porous-surfaced implants subjected to small induced motions. Journal of Bone and Joint Surgery 1997, 79, 707-714. 

TABLE 3 In vivo Evaluation of Blood Compatibility of Grafted Surfaces Implanted for Different Periods of Time... 

Figure 25.1 Schematic presentation of plasma surface implantation of F-containing moieties on a semi-crystalline polymer surface and the change occurring in water immersion.

The investigation of epitaxial Si growth atop atomically-clean Si surface implanted with Fe" (Cr ) ions and subjected to PLA or PIBT was carried out. It was established that epitaxial Si growth by MBE is possible for minimal fluence by mechanism of 2D nucleation and lateral 3D growth. The continuous epitaxial Si films can be obtained larger than 500 nm at 700°C for small implantation fluence of Fe and Cr ( 10 cm ). For the maximal fluence (6-10 cm ) the number of pinholes in the Si layer increases sharply and epitaxial growth is failed. In the case of the Si growth (up to 500 nm) on the surface of non-annealed samples the pinhole density increases for 3-4 times and Si layer is polycrystalline only. 

Lu, G. and Pilliar, R. (2003) Calcium phosphate sol-gel-derived thin films on porous-surfaced implants for enhanced osteoconductivity. Part I synthesis and characterization. Biomaterials, 25 (22), 5303 -5312. 

Yoon, H.J., Song, J.E., Um, Y.J., Chae, G.J., Chung, S.M., Lee, I.S., Jung, U.W., Kim, C.S., and Choi, S.H. (2009) Effects of calcium phosphate coatings to surface implants by the ion-beam-assisted deposition method on self-contained coronal defect healing in dogs. Biomed. Mater., 4 (4), 044107. 

T. P. Ong, F. Xiong, R. P. H. Chang, and C. W. White, Mechanism for diamond nucleation and growth on single crystal copper surfaces implanted with carbon, Appl Phys. Lett., 60(17) 2083-2085 (1992)... 

Fig. 10.15a-c. Spectrum of liver metastases in ovarian cancer. Transaxial CT shows multiple liver parenchymal metastases (a) and liver surface metastases (arrows) (b, c) in different patients with ovarian cancer. Liver surface metastases are typically crescent-shaped and may cause scalloping of the surface of the liver. Surface implants maybe solid (b) or cystic (c). Splenic surface metastases are also found in c, which shows a morphology similar to the liver implants... 

Fig. 10.23a,b. Ovarian cancer recurrence. Coronal CT scans (a, b) in a patient with advanced recurrent clear cell cancer show multiple, predominantly cystic peritoneal implants throughout the abdomen and pelvis. The liver surface is compressed by surface implants (asterisk) (a, b). Multiple enlarged lymph nodes are seen in the right pelvis and root of the mesentery (b). Associated findings in this case include bilateral pleural effusion and a thrombus in the left femoral vein... 

Davies JE, T ami E, Moineddin R, Mendes VC. The roles of different scale ranges of surface implant topography on the stability of the bone/implant interface. Biomaterials... 

Antimicrobial surfaces Implants, surgical tools, catheters... 

---