Abstract:
:Knowledge of biological sonar systems has revolutionized many aspects of sonar engineering and further advances will benefit from more detailed understanding of their underlying acoustical processes. The anatomically diverse, complex and dynamic heads and ears of bats are known to be important for echolocation although their range-dependent properties are not well understood, particularly across the wide frequency range of some bats' vocalizations. The aim of this and a companion paper Kim et al (2012 Bioinspir. Biomim.) is to investigate bat-head acoustics as a function of bat-target distance, based on measurements up to 100 kHz and more robust examination of hardware characteristics in measurements than previously reported, using a cast of a bat head. In this first paper, we consider the spectral features at either ear (i.e. monaural head-related transfer functions). The results show, for example, that there is both higher magnitude and a stronger effect of distance at close range at relatively low frequencies. This might explain, at least in part, why bats adopt a strategy of changing the frequency range of their vocalizations while approaching a target. There is also potential advantage in the design of bio-inspired receivers of using range-dependent HRTFs and utilizing their distinguished frequency characteristics over the distance.
journal_name
Bioinspir Biomimjournal_title
Bioinspiration & biomimeticsauthors
Kim S,Allen R,Rowan Ddoi
10.1088/1748-3182/7/4/046014subject
Has Abstractpub_date
2012-12-01 00:00:00pages
046014issue
4eissn
1748-3182issn
1748-3190journal_volume
7pub_type
杂志文章abstract::Flight initiation is fundamental for survival, escape from predators and lifting payload from one place to another in biological fliers and can be broadly classified into jumping and non-jumping takeoffs. During jumping takeoffs, the legs generate most of the initial impulse. Whereas the wings generate most of the for...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aa7f52
更新日期:2017-09-26 00:00:00
abstract::It is well known that animals can use neural and sensory feedback via vision, tactile sensing, and echolocation to negotiate obstacles. Similarly, most robots use deliberate or reactive planning to avoid obstacles, which relies on prior knowledge or high-fidelity sensing of the environment. However, during dynamic loc...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aaa2cd
更新日期:2018-02-02 00:00:00
abstract::This paper describes the design, fabrication and locomotion of a starfish robot whose locomotion principle is derived from a starfish. The starfish robot has a number of tentacles or arms extending from its central body in the form of a disk, like the topology of a real starfish. The arm, which is a soft and composite...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/11/5/056012
更新日期:2016-09-09 00:00:00
abstract::We have previously suggested a biologically-inspired natural dynamic controller for biped locomotion, which applies torque pulses to the different joints at particular phases of an internal phase variable. The parameters of the controller, including the timing and magnitude of the torque pulses and the dynamics of the...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab782a
更新日期:2020-03-25 00:00:00
abstract::Aiming to produce bioinspired impact and puncture resistant materials, the mesocarp of the Brazil nut (Bertholletia excelsa) was characterized. The mesocarp composition was investigated by chemical extraction and its microstructure was analyzed by optical microscopy and microtomography (microCT). A compression test ev...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab2298
更新日期:2019-07-03 00:00:00
abstract::The aim of this study is the biomimetic optimisation of branched fibre-reinforced composites based on the detailed analysis of biological concept generators. The methods include analyses of the functional morphology and biomechanics of arborescent monocotyledons and columnar cacti as well as measurements and modelling...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/11/5/055005
更新日期:2016-09-07 00:00:00
abstract::This paper reports the rationale and design of a robotic arm, as inspired by an octopus arm. The octopus arm shows peculiar features, such as the ability to bend in all directions, to produce fast elongations, and to vary its stiffness. The octopus achieves these unique motor skills, thanks to its peculiar muscular st...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/4/1/015006
更新日期:2009-03-01 00:00:00
abstract::Research on quadrupedal robots inspired by canids or felids have been widely reported and demonstrated. However, none of these legged robots can deal with difficult environments that include water, such as small lakes, streams, rain, mud, flooded terrain, etc. In this paper, we present for the first time a kinematic a...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab3d05
更新日期:2019-09-13 00:00:00
abstract::Fiber reinforced elastomeric enclosures (FREEs) are soft pneumatic actuators that can contract and generate forces upon pressurization. Typical engineering applications utilize FREEs in their straight cylindrical configuration and derive actuation displacement and forces from their ends. However, there are several ins...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aab19c
更新日期:2018-04-18 00:00:00
abstract::Bats display a wide variety of behaviors that require different amounts of aerodynamic force. To control and modulate aerodynamic force, bats change wing kinematics, which, in turn, may change the power required for wing motion. There are many kinematic mechanisms that bats, and other flapping animals, can use to incr...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/9/2/025008
更新日期:2014-06-01 00:00:00
abstract::Legged animals exhibit adaptive and resilient locomotion through interlimb coordination. The long-term goal of this study is to clarify the relationship between the number of legs and the inherent decentralized control mechanism for interlimb coordination. As a preliminary step, the study focuses on millipedes as they...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aa64a5
更新日期:2017-04-04 00:00:00
abstract::We report on the development of a robot's dynamic locomotion based on a template which fits the robot's natural dynamics. The developed template is a low degree-of-freedom planar model for running with rolling contact, which we call rolling spring loaded inverted pendulum (R-SLIP). Originating from a reduced-order mod...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/9/4/046004
更新日期:2014-10-07 00:00:00
abstract::Nano-structured colorful zinc oxide (ZnO) replicas were produced using the wings of the Ideopsis similis butterfly as templates. The ZnO replicas we obtained exhibit iridescence, which was clearly observed under an optical microscope (OM). Field emission scanning electron microscope analysis shows that all the microst...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/1/3/003
更新日期:2006-09-01 00:00:00
abstract::Nacre-mimetic epoxy matrix composites reinforced with readily available micron-sized high aspect ratio C-glass flakes were fabricated by a relatively simple, single-step, scalable, time, cost and man-power effective processing strategy: hot-press assisted slip casting (HASC). HASC enables the fabrication of preferenti...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/12/1/016002
更新日期:2016-12-05 00:00:00
abstract::The finite element modeling (FEM) space reported here contains the head of a simulated whale based on CT data sets as well as physical measurements of sound-propagation characteristics of actual tissue samples. Simulated sound sources placed inside and outside of an adult male Cuvier's beaked whale (Ziphius cavirostri...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/3/1/016001
更新日期:2008-03-01 00:00:00
abstract::Limitations in actuation, sensing, and computation have forced small legged robots to rely on carefully tuned, mechanically mediated leg trajectories for effective locomotion. Recent advances in manufacturing, however, have enabled in such robots the ability for operation at multiple stride frequencies using multi-deg...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab295b
更新日期:2019-07-01 00:00:00
abstract::This paper details the development of a nano-scale (>15 cm) robotic samara, or winged seed. The design of prototypes inspired by naturally occurring geometries is presented along with a detailed experimental process which elucidates similarities between mechanical and robotic samara flight dynamics. The helical trajec...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/5/4/045009
更新日期:2010-12-01 00:00:00
abstract::The noseleaf and pinnae of horseshoe bats (Rhinolophus ferrumequinum) have both been shown to actively deform during biosonar operation. Since these baffle structures directly affect the properties of the animals biosonar system, this work mimics horseshoe bat sonar system with the goal of developing a platform to stu...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aac788
更新日期:2018-06-26 00:00:00
abstract::Walking is the most common terrestrial form of locomotion in animals. Its great versatility and flexibility has led to many attempts at building walking machines with similar capabilities. The control of walking is an active research area both in neurobiology and robotics, with a large and growing body of work. This p...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章,评审
doi:10.1088/1748-3190/10/4/041001
更新日期:2015-06-29 00:00:00
abstract::It is of interest to exploit the insight from the lateral line system of fish for flow sensing applications. In this paper, a novel fish canal lateral line-inspired pressure difference sensor is proposed by embedding an ionic polymer-metal composite (IPMC) sensor within a canal filled with viscous fluid. Such a sensor...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab2fa8
更新日期:2019-07-29 00:00:00
abstract::Structural hierarchy and complex 3D architecture are characteristics of biological photonic designs that are challenging to reproduce in synthetic materials. Top-down lithography allows for designer patterning of arbitrary shapes, but is largely restricted to planar 2D structures. Self-assembly techniques facilitate e...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/8/4/045004
更新日期:2013-12-01 00:00:00
abstract::This paper presents the stability analysis of the leading edge spar of a flapping wing unmanned air vehicle with a compliant spine inserted in it. The compliant spine is a mechanism that was designed to be flexible during the upstroke and stiff during the downstroke. Inserting a variable stiffness mechanism into the l...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/10/6/065003
更新日期:2015-10-26 00:00:00
abstract::In this paper, the effect of torso flexibility on the energetics of quadrupedal bounding is examined in a template setting. Two reductive sagittal-plane models, one with a rigid, non-deformable torso and one with a flexible, unactuated torso are proposed. Both models feature non-trivial leg mass and inertia to capture...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/10/5/056008
更新日期:2015-09-03 00:00:00
abstract::Previous research on the flexible structure of flapping wings has shown an improved propulsion performance in comparison to rigid wings. However, not much is known about this function in terms of power efficiency modification for flapping wing energy devices. In order to study the role of the flexible wing deformation...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/8/3/036011
更新日期:2013-09-01 00:00:00
abstract::The pursuit of a high lift force for insect-scale flapping-wing micro aerial vehicles (FMAVs) requires that their artificial wings possess biomimetic wing features which are close to those of their natural counterpart. In this work, we present both fabrication and testing methods for artificial insect wings with biomi...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aa7f16
更新日期:2017-09-26 00:00:00
abstract::The Venus flytrap uses bistability, the structural characteristic of its leaf, to actuate the leaf's rapid closing motion for catching its prey. This paper presents a flytrap-inspired robot and novel actuation mechanism that exploits the structural characteristics of this structure and a developable surface. We focus ...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/9/3/036004
更新日期:2014-09-01 00:00:00
abstract::Designing bio-inspired, multifunctional organic-inorganic composite materials is one of the most popular current research objectives. Due to the high complexity of biocomposite structures found in nacre and bone, for example, a one-pot scalable and versatile synthesis approach addressing structural key features of bio...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章,评审
doi:10.1088/1748-3190/11/3/035002
更新日期:2016-05-13 00:00:00
abstract::The axonemal micro-machinery, the axial skeleton and actuator of cilia and flagella of eukaryotic cells, is able to bend and twist and generates wave trains. We already demonstrated that it can be the template to construct an active trunk robot (Cibert 2013 Bioinspir. Biomim. 8 026006). The work presented in this pape...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/11/5/056019
更新日期:2016-09-29 00:00:00
abstract::Electric fish are privileged animals for bio-inspiring man-built autonomous systems since they have a multimodal sense that allows underwater navigation, object classification and intraspecific communication. Although there are taxon dependent variations adapted to different environments, this multimodal system can be...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章,评审
doi:10.1088/1748-3190/12/2/025004
更新日期:2017-02-02 00:00:00
abstract::A novel dual-differential four-bar flapping mechanism that can accurately emulate insect wing kinematics in all three degrees of freedom (translation, rotation and stroke plane deviation) is developed. The mechanism is specifically designed to be simple and scalable such that it can be utilized on an insect-based flap...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/7/3/036017
更新日期:2012-09-01 00:00:00