Strategies for Controlled Placement of Nanoscale Building Blocks

The capability of placing individual nanoscale building blocks on exact substrate locations in a controlled manner is one of the key requirements to realize future electronic, optical, and magnetic devices and sensors that are composed of such blocks. This article reviews some important advances in the strategies for controlled placement of nanoscale building blocks. In particular, we will overview template assisted placement that utilizes physical, molecular, or electrostatic templates, DNA-programmed assembly, placement using dielectrophoresis, approaches for non-close-packed assembly of spherical particles, and recent development of focused placement schemes including electrostatic funneling, focused placement via molecular gradient patterns, electrodynamic focusing of charged aerosols, and others

Hexagonally packed zinc oxide nanorod bundles on hydrotalcite sheets

10.1039/b502168eJournal of Materials Chemistry15252508-2514JMAC

Periodic Orthogonal Splines and Wavelets

10.1006/acha.1995.1014Applied and Computational Harmonic Analysis23201-218ACOH

Chemical and physical defenses of Singapore gorgonians (Octocorallia: Gorgonacea)

10.1016/S0022-0981(00)00207-0Journal of Experimental Marine Biology and Ecology2511103-115JEMB

The prevalence and risk factors of paternal depression from the antenatal to the postpartum period and the relationships between antenatal and postpartum depression among fathers in Hong Kong

10.1155/2014/127632Depression Research and Treatment201412763

Ulcerated Giant Dermatofibroma following Routine Childhood Vaccination in a Young Boy

Introduction: The development of cutaneous neoplasms at immunization sites following vaccination is uncommon, and only few have been reported in the literature worldwide. We report an unusual case of an ulcerated giant dermatofibroma that developed as a chronic nonhealing plaque in the immunization scar of a young boy after vaccination. Case Report: A 13-month-old Chinese boy presented with an unusual skin reaction on the vaccination site at the right anterolateral thigh following a routine intramuscular injection of ‘5-in-1’ (diphtheria, tetanus, pertussis, polio and Haemophilus influenzae B) vaccine at 4 months of age. The immunization site developed a slightly raised papule with a central punctum that progressively grew in size, ulcerated and showed occasional bleeding over a span of 9 months. On follow-up, the lesion showed a chronic granulomatous reaction with surrounding induration and a central scarring. The right inguinal lymph node was palpable. Ultrasound of the lesion showed only nonspecific focal skin thickening. An incisional skin biopsy with careful histopathological evaluation revealed microscopic features consistent with an ulcerated giant dermatofibroma. Conclusion: Neoplastic development in immunization scars following vaccination is a rare occurrence and, hence, makes this case a diagnostic challenge. A high index of suspicion is crucial in atypical presentations of a common skin lesion, as typified by this case. Careful history taking and clinicopathological correlation of clinical findings with gross and microscopic findings along with targeted immunohistological staining is often essential to aid early diagnosis

Concerns, perceived impact and preparedness in an avian influenza pandemic - A comparative study between healthcare workers in primary and tertiary care

Annals of the Academy of Medicine Singapore37296-102AAMS

Detection of meibomian glands and classification of meibography images

10.1117/1.JBO.17.8.086008Journal of Biomedical Optics178-JBOP

Synthesis and optical properties of well aligned ZnO nanorods on GaN by hydrothermal synthesis

10.1088/0957-4484/17/2/023Nanotechnology172483-488NNOT

Prevalence and causes of amblyopia in a population-based study of young adult men in Singapore

10.1016/j.ajo.2005.03.029American Journal of Ophthalmology1403551-55