Penobscot Poems

A collection of short poems about the Penobscot area. Titles of poems include Eggemoggin Reach, Deer Isle, The Tide at Avalon, and The Song of Blue Hill Bay.https://digicom.bpl.lib.me.us/books_pubs/1080/thumbnail.jp

Microtweezers For Studying Vibrating Carbon Nanotubes

Vibrational modes in suspended carbon nanotubes (CNTs) are incredibly soft, which makes them sensitive to small forces and prime candidates as force sensors. This same property, combined with the stiffness of the CNT to stretching, makes them an unusual mechanical system characterized both by large thermally-activated fluctuations and strong nonlinear interactions between the resonance modes. To understand how these thermal fluctuations manifest themselves in the resonance of CNTs, we developed an electrically-contacted micro-tweezer platform. The platform is capable of lifting a pristine CNT off of its growth substrate, directly applying strain to the free-standing doubly-clamped CNT, and controlling its proximity to electrical gates. Using the unprecedented level of measurement precision offered by our novel setup, we preformed the firstever single-shot ring-down measurements on CNTs, to map the resonance spectra as a function of strain and we directly measured the thermal motion of single-walled CNTs at room temperature. These measurements, in agreement with our original theoretical predictions, convincingly show that thermally-inducted fluctuations of CNT resonance modes are in fact the source of the remarkably high mechanical dissipation that has been ubiquitously observed in room-temperature CNT resonators. This result is not material dependent and the underlying physics should apply to all nanoscale 1D resonators. In addition to this key result, we use the microtweezer platform to couple CNT resonators to high-Q optical microdisk resonators. With this hybrid system, we demonstrate remarkably strong optomechanical coupling and make the first-ever observation of the optical spring-effect on CNT mechanical resonators

Synchronization of Micromechanical Oscillators Using Light

Synchronization, the emergence of spontaneous order in coupled systems, is of fundamental importance in both physical and biological systems. We demonstrate the synchronization of two dissimilar silicon nitride micromechanical oscillators, that are spaced apart by a few hundred nanometers and are coupled through optical radiation field. The tunability of the optical coupling between the oscillators enables one to externally control the dynamics and switch between coupled and individual oscillation states. These results pave a path towards reconfigurable massive synchronized oscillator networks

Pre-adolescent children’s experiences of receiving diabetes-related support from friends and peers: a qualitative study

BackgroundWhile pre�adolescent children with type 1 diabetes receive most support from their parents/caregivers, others also contribute to their care. This study explored pre�adolescent children's experiences of receiving diabetes�related support from friends and peers. The objective was to identify how children could be better supported by their friends and peers to undertake diabetes self�management.MethodsIn�depth interviews with 24 children (aged 9�12 years) with type 1 diabetes. Data were analysed using an inductive, thematic approach.ResultsChildren gave mixed accounts of their experiences of speaking to their school/class about diabetes with some indicating that this had resulted in unwanted attention. Most individuals reported that other children had a limited understanding of diabetes and sometimes acted in insensitive ways or said things they found upsetting. Virtually all children described having a small number of close friends who were interested in learning about diabetes and provided them with support. These friends provided support in three overlapping ways, as �monitors and prompters,� �helpers� and �normalizers.� While some children described benefiting from meeting peers with type 1 diabetes, most indicated that they would prefer to develop friendships based on shared interests rather than a common disease status.Discussion and conclusionsFriends and peers provide several kinds of support to pre�adolescent children with diabetes. Health professionals could consider ways to assist small friendship groups to undertake monitoring and prompting, helping and normalizing roles. Parents, schools and health professionals could explore ways to normalize self�management practices to better support children with diabetes in school settings.</p

The Victorian Naturalist

v.116 (1999

The Victorian Naturalist

v.44 (1927-1928

The Victorian Naturalist

v.114 (1997